HDF View file process

Mahesh · November 24, 2010, 5:13am

Dear all,

I have downloaded and installed HDF View in my desktop and downloaded MODIS
Sea Surface Temperature images. I am unable to view these images in HDF View
as open file promt is not showing those files. Either downloaded files may
not be HDF5 files or they need some processing to view it in the tool.

Kindly advise me as I am a first time user of HDF as well as MODIS data from
NASA.

Thanks in advance and Regards

Mahesh Shiramagond
Kuwait

roger · November 24, 2010, 2:31pm

Hi Mahesh,

You might try downloading h5check and running it on the files you're attempting to view. If it is happy with the hdf file and its version is what you want then it would be an HDFView problem. Or h5check will find a format problem in the files if they are broken or corrupted.

http://www.hdfgroup.org/products/hdf5_tools/h5check.html

I'm another user but I thought I'd reply since many may be already enjoying Thanksgiving in the States.

···

On 11/24/2010 12:13 AM, mahesh shiramgond wrote:

Dear all,
I have downloaded and installed HDF View in my desktop and downloaded MODIS Sea Surface Temperature images. I am unable to view these images in HDF View as open file promt is not showing those files. Either downloaded files may not be HDF5 files or they need some processing to view it in the tool.
Kindly advise me as I am a first time user of HDF as well as MODIS data from NASA.

Thanks in advance and Regards

Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

Peter_Cao · November 24, 2010, 3:32pm

Hi Kuwait,

If you cannot see your files at the file dialog, you could try one of the two things:
1) At the file dialog, select "All files" at the "Files of Type"
2) Add your file extension in HDFView at "Tools"->"User Options"

If you can select the file but the file does not show in HDFView, the file
may be corrupted. Try as Roger suggested.

Could you also try the example files at $YOUR_HDFVIEW_HOME/samples?
Make sure that HDFView works on your machine.

Thanks
--pc

···

On 11/23/2010 11:13 PM, mahesh shiramgond wrote:

Dear all,
I have downloaded and installed HDF View in my desktop and downloaded MODIS Sea Surface Temperature images. I am unable to view these images in HDF View as open file promt is not showing those files. Either downloaded files may not be HDF5 files or they need some processing to view it in the tool.
Kindly advise me as I am a first time user of HDF as well as MODIS data from NASA.

Thanks in advance and Regards

Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

BISSELL_Stephen · November 26, 2010, 9:10am

Hi Mahesh. I've never used the MODIS tool, but out of curiosity I checked the
web site, it looks to me like what you download from those sites are either
JPEG, PNG, GeoTIFF or GoogleEarth format files. None of those are HDF file
formats in any way .... or maybe I'm misunderstanding the web site?
Steve

···

--
View this message in context: http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
Sent from the hdf-forum mailing list archive at Nabble.com.

epourmal · November 24, 2010, 10:17pm

MODIS Sea Surface Temperature images are probably HDF4 files if you downloaded from http://modis.gsfc.nasa.gov/data/dataprod/dataproducts.php?MOD_NUMBER=28. Please check if HDFView you are using has HDF4 enabled ("4' icon near the "Help" button of the main window should be highlighted, click on it to see which HDF4 version is used)).

Elena

···

On Nov 24, 2010, at 9:32 AM, Peter Cao wrote:

Hi Kuwait,

If you cannot see your files at the file dialog, you could try one of the two things:
1) At the file dialog, select "All files" at the "Files of Type"
2) Add your file extension in HDFView at "Tools"->"User Options"

If you can select the file but the file does not show in HDFView, the file
may be corrupted. Try as Roger suggested.

Could you also try the example files at $YOUR_HDFVIEW_HOME/samples?
Make sure that HDFView works on your machine.

Thanks
--pc

On 11/23/2010 11:13 PM, mahesh shiramgond wrote:

Dear all,

I have downloaded and installed HDF View in my desktop and downloaded MODIS Sea Surface Temperature images. I am unable to view these images in HDF View as open file promt is not showing those files. Either downloaded files may not be HDF5 files or they need some processing to view it in the tool.

Kindly advise me as I am a first time user of HDF as well as MODIS data from NASA.

Thanks in advance and Regards

Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

gnwiii · November 26, 2010, 1:54pm

Hi Mahesh. I've never used the MODIS tool, but out of curiosity I checked the
web site, it looks to me like what you download from those sites are either
JPEG, PNG, GeoTIFF or GoogleEarth format files. None of those are HDF file
formats in any way .... or maybe I'm misunderstanding the web site?

If you use the "download data" button you get an hdf4 file, but in
bzip2 compressed
form. This has been a major source of confusion for new users -- it
would be nice
very helpful if hdfview could do some checks for common archive and compression
formats -- people often get data in a form that can't used directly
without realizing some
extra steps are needed -- a common mistake with NASA OBPG files that
don't have .hdf
extension is to rename .bz2 to .hdf.

···

On Fri, Nov 26, 2010 at 5:10 AM, Steve Bissell <stephen.bissell@airbus.com> wrote:

Steve
--
View this message in context: http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
Sent from the hdf-forum mailing list archive at Nabble.com.

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
George N. White III <aa056@chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia

Mahesh · November 28, 2010, 5:43am

Hi Steve,

You are absolutely on right website. That site provides mentioned download
options but out of which JPEG and PNG are not downloadable options.
These files can be viewed in a browser but can not be downlaoded. whereas
Geotiff are not GIS based geotiffs instead they are photoshop based
geotiffs.
Google earth files are KMZ files which can be downloaded and viewed in
Google earth but cannot be viewed in any other interface.

If you can see few options in *search results* (along with date of satellite
pass) panel like View - can be viewed in same page, View on Google earth -
viewed in google earth, analyze image - can be anlysed with some anamolies,
Download data - will download data in HDF format. This HDF format is
downloaded and viewed in HDF viewer which intern can be saved into other
formats and can be used for further processes.
Thanks and give me some ideas to utilise HDF files to view and analyze

Regards
Mahesh

···

On Fri, Nov 26, 2010 at 12:10 PM, Steve Bissell <stephen.bissell@airbus.com>wrote:

Hi Mahesh. I've never used the MODIS tool, but out of curiosity I checked
the
web site, it looks to me like what you download from those sites are either
JPEG, PNG, GeoTIFF or GoogleEarth format files. None of those are HDF file
formats in any way .... or maybe I'm misunderstanding the web site?
Steve
--
View this message in context:
http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
Sent from the hdf-forum mailing list archive at Nabble.com.

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

Mahesh · November 25, 2010, 11:20am

Dear Roger, Peter, Elena

Thanks for your suggestions but unsuccessful. I am not sure which format
the file is carrying whether HDF4 or HDF5.
I downloaded H5check which I didnot understand its head and tail as i am not
from programming background.

As peter suggested, I tried to change the file types from Tools => User
options that also didnt work.
as a second suggestion to check sample data provided in samples folder from
HDFview install location,
open dialog shows list of hdf files but when tried to open them pops up an
error message "failed to open file - unsupported file format"

According to Elena's suggestion, Images are not downloded from
http://modis.gsfc.nasa.gov/data/dataprod/dataproducts.php?
but downloaded from http://neo.sci.gsfc.nasa.gov/search.html.
Here in HDFView main window I saw "4" and "5" both the icons are disabled
where even submenus in File => New => HDF4 and HDF5 are disabled.

Kindly advise me, is there any problem in the application or in files?

Thanks and Regards
Mahesh

···

---------- Forwarded message ----------
From: mahesh shiramgond <maheshshiramgond@gmail.com>
Date: Thu, Nov 25, 2010 at 2:14 PM
Subject: Re: [Hdf-forum] HDF View file process
To: HDF Users Discussion List <hdf-forum@hdfgroup.org>

On Thu, Nov 25, 2010 at 1:17 AM, Elena Pourmal <epourmal@hdfgroup.org>wrote:

MODIS Sea Surface Temperature images are probably HDF4 files if you
downloaded from http://modis.gsfc.nasa.gov/data/dataprod/dataproducts.php?<http://modis.gsfc.nasa.gov/data/dataprod/dataproducts.php?MOD_NUMBER=28>
MOD_NUMBER=28<http://modis.gsfc.nasa.gov/data/dataprod/dataproducts.php?MOD_NUMBER=28>.
Please check if HDFView you are using has HDF4 enabled ("4' icon near the
"Help" button of the main window should be highlighted, click on it to see
which HDF4 version is used)).

Elena

On Nov 24, 2010, at 9:32 AM, Peter Cao wrote:

Hi Kuwait,

If you cannot see your files at the file dialog, you could try one of the
two things:
1) At the file dialog, select "All files" at the "Files of Type"
2) Add your file extension in HDFView at "Tools"->"User Options"

If you can select the file but the file does not show in HDFView, the file
may be corrupted. Try as Roger suggested.

Could you also try the example files at $YOUR_HDFVIEW_HOME/samples?
Make sure that HDFView works on your machine.

Thanks
--pc

On 11/23/2010 11:13 PM, mahesh shiramgond wrote:

Dear all,

I have downloaded and installed HDF View in my desktop and downloaded MODIS
Sea Surface Temperature images. I am unable to view these images in HDF View
as open file promt is not showing those files. Either downloaded files may
not be HDF5 files or they need some processing to view it in the tool.

Kindly advise me as I am a first time user of HDF as well as MODIS data
from NASA.

Thanks in advance and Regards

Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.Hdf-forum@hdfgroup.orghttp://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

Mahesh · November 28, 2010, 5:52am

Hi George,

Do you mean to say that I have to save these files as .hdf while
downloading?

If yes, do I need to put '.hdf' at the end of the file name? for your
information this is a zipped file.

If not, do I need to change the name of the file just adding '.hdf' at the
end of the file name

Please suggest and even first option is not opening file but showing same
error.

Regards
mahesh

···

On Fri, Nov 26, 2010 at 4:54 PM, George N. White III <gnwiii@gmail.com>wrote:

On Fri, Nov 26, 2010 at 5:10 AM, Steve Bissell > <stephen.bissell@airbus.com> wrote:
>
> Hi Mahesh. I've never used the MODIS tool, but out of curiosity I checked
the
> web site, it looks to me like what you download from those sites are
either
> JPEG, PNG, GeoTIFF or GoogleEarth format files. None of those are HDF
file
> formats in any way .... or maybe I'm misunderstanding the web site?

If you use the "download data" button you get an hdf4 file, but in
bzip2 compressed
form. This has been a major source of confusion for new users -- it
would be nice
very helpful if hdfview could do some checks for common archive and
compression
formats -- people often get data in a form that can't used directly
without realizing some
extra steps are needed -- a common mistake with NASA OBPG files that
don't have .hdf
extension is to rename .bz2 to .hdf.

> Steve
> --
> View this message in context:
http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
> Sent from the hdf-forum mailing list archive at Nabble.com.
>
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> Hdf-forum@hdfgroup.org
> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
>

--
George N. White III <aa056@chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

epourmal · November 25, 2010, 11:08pm

Mahesh,

From: mahesh shiramgond <maheshshiramgond@gmail.com>
Date: Thu, Nov 25, 2010 at 2:14 PM
Subject: Re: [Hdf-forum] HDF View file process
To: HDF Users Discussion List <hdf-forum@hdfgroup.org>

Dear Roger, Peter, Elena

Thanks for your suggestions but unsuccessful. I am not sure which format the file is carrying whether HDF4 or HDF5.
I downloaded H5check which I didnot understand its head and tail as i am not from programming background.

As peter suggested, I tried to change the file types from Tools => User options that also didnt work.
as a second suggestion to check sample data provided in samples folder from HDFview install location,
open dialog shows list of hdf files but when tried to open them pops up an error message "failed to open file - unsupported file format"

According to Elena's suggestion, Images are not downloded from http://modis.gsfc.nasa.gov/data/dataprod/dataproducts.php?
but downloaded from http://neo.sci.gsfc.nasa.gov/search.html.

This should be fine. You did go through NASA's Web site.

Here in HDFView main window I saw "4" and "5" both the icons are disabled where even submenus in File => New => HDF4 and HDF5 are disabled.

Looks like HDFView is not installed correctly. Which system are you on? From where did you download HDFView? Can you reinstall HDFView from http://www.hdfgroup.org/hdf-java-html/hdfview/?

Elena

···

On Nov 25, 2010, at 5:20 AM, mahesh shiramgond wrote:

---------- Forwarded message ----------
Kindly advise me, is there any problem in the application or in files?

Thanks and Regards
Mahesh

On Thu, Nov 25, 2010 at 1:17 AM, Elena Pourmal <epourmal@hdfgroup.org> wrote:
MODIS Sea Surface Temperature images are probably HDF4 files if you downloaded from http://modis.gsfc.nasa.gov/data/dataprod/dataproducts.php?MOD_NUMBER=28. Please check if HDFView you are using has HDF4 enabled ("4' icon near the "Help" button of the main window should be highlighted, click on it to see which HDF4 version is used)).

Elena

On Nov 24, 2010, at 9:32 AM, Peter Cao wrote:

Hi Kuwait,

If you cannot see your files at the file dialog, you could try one of the two things:
1) At the file dialog, select "All files" at the "Files of Type"
2) Add your file extension in HDFView at "Tools"->"User Options"

If you can select the file but the file does not show in HDFView, the file
may be corrupted. Try as Roger suggested.

Could you also try the example files at $YOUR_HDFVIEW_HOME/samples?
Make sure that HDFView works on your machine.

Thanks
--pc

On 11/23/2010 11:13 PM, mahesh shiramgond wrote:

Dear all,

I have downloaded and installed HDF View in my desktop and downloaded MODIS Sea Surface Temperature images. I am unable to view these images in HDF View as open file promt is not showing those files. Either downloaded files may not be HDF5 files or they need some processing to view it in the tool.

Kindly advise me as I am a first time user of HDF as well as MODIS data from NASA.

Thanks in advance and Regards

Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

--
Mahesh Shiramagond
Kuwait
_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

roger · November 28, 2010, 11:13am

Hi Mahesh,

I believe George was saying don't change the extension but uncompress/unzip them. Through these messages I didn't gather which operating system you are using and what compression software will work for you. Probably the file inside the *.bz2 has the .h5 extension which will be there after uncompression.

On linux or MacOSX boxes you can right click and "Extract here". On windows I use a small Ant script but that takes understanding Ant. Someone should know of a bz2 decompressor for you in the window's case.

···

On 11/28/2010 12:52 AM, mahesh shiramgond wrote:

Hi George,
Do you mean to say that I have to save these files as .hdf while downloading?
If yes, do I need to put '.hdf' at the end of the file name? for your information this is a zipped file.
If not, do I need to change the name of the file just adding '.hdf' at the end of the file name
Please suggest and even first option is not opening file but showing same error.
Regards
mahesh

On Fri, Nov 26, 2010 at 4:54 PM, George N. White III <gnwiii@gmail.com > <mailto:gnwiii@gmail.com>> wrote:

    On Fri, Nov 26, 2010 at 5:10 AM, Steve Bissell > <stephen.bissell@airbus.com <mailto:stephen.bissell@airbus.com>> > wrote:
    >
    > Hi Mahesh. I've never used the MODIS tool, but out of curiosity
    I checked the
    > web site, it looks to me like what you download from those sites
    are either
    > JPEG, PNG, GeoTIFF or GoogleEarth format files. None of those
    are HDF file
    > formats in any way .... or maybe I'm misunderstanding the web site?

    If you use the "download data" button you get an hdf4 file, but in
    bzip2 compressed
    form. This has been a major source of confusion for new users -- it
    would be nice
    very helpful if hdfview could do some checks for common archive
    and compression
    formats -- people often get data in a form that can't used directly
    without realizing some
    extra steps are needed -- a common mistake with NASA OBPG files that
    don't have .hdf
    extension is to rename .bz2 to .hdf.

    > Steve
    > --
    > View this message in context:
    http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
    > Sent from the hdf-forum mailing list archive at Nabble.com.
    >
    > _______________________________________________
    > Hdf-forum is for HDF software users discussion.
    > Hdf-forum@hdfgroup.org <mailto:Hdf-forum@hdfgroup.org>
    > http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
    >

    --
    George N. White III <aa056@chebucto.ns.ca
    <mailto:aa056@chebucto.ns.ca>>
    Head of St. Margarets Bay, Nova Scotia

    _______________________________________________
    Hdf-forum is for HDF software users discussion.
    Hdf-forum@hdfgroup.org <mailto:Hdf-forum@hdfgroup.org>
    http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

Mahesh · November 28, 2010, 11:50am

Hi Roger,

I have OS Windows XP Professional running on my machine with WINRAR
compression software.
I tried accordingly as george advised to change the extension but same
error.
here I noticed that saved file with .hdf extension is appearing with HDF
view icon.
I tried reinstalling HDF view but problem remains same.

Kindly advise, is there any other interface i can use to view these HDF
files?

Thanks and Regards
Mahesh

···

On Sun, Nov 28, 2010 at 2:13 PM, Roger Martin <roger@quantumbioinc.com>wrote:

Hi Mahesh,

I believe George was saying don't change the extension but uncompress/unzip
them. Through these messages I didn't gather which operating system you are
using and what compression software will work for you. Probably the file
inside the *.bz2 has the .h5 extension which will be there after
uncompression.

On linux or MacOSX boxes you can right click and "Extract here". On
windows I use a small Ant script but that takes understanding Ant. Someone
should know of a bz2 decompressor for you in the window's case.

On 11/28/2010 12:52 AM, mahesh shiramgond wrote:

Hi George,

Do you mean to say that I have to save these files as .hdf while
downloading?

If yes, do I need to put '.hdf' at the end of the file name? for your
information this is a zipped file.

If not, do I need to change the name of the file just adding '.hdf' at the
end of the file name

Please suggest and even first option is not opening file but showing same
error.

Regards
mahesh

On Fri, Nov 26, 2010 at 4:54 PM, George N. White III <gnwiii@gmail.com>wrote:

On Fri, Nov 26, 2010 at 5:10 AM, Steve Bissell >> <stephen.bissell@airbus.com> wrote:
>
> Hi Mahesh. I've never used the MODIS tool, but out of curiosity I
checked the
> web site, it looks to me like what you download from those sites are
either
> JPEG, PNG, GeoTIFF or GoogleEarth format files. None of those are HDF
file
> formats in any way .... or maybe I'm misunderstanding the web site?

If you use the "download data" button you get an hdf4 file, but in
bzip2 compressed
form. This has been a major source of confusion for new users -- it
would be nice
very helpful if hdfview could do some checks for common archive and
compression
formats -- people often get data in a form that can't used directly
without realizing some
extra steps are needed -- a common mistake with NASA OBPG files that
don't have .hdf
extension is to rename .bz2 to .hdf.

> Steve
> --
> View this message in context:
http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
> Sent from the hdf-forum mailing list archive at Nabble.com.
>
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> Hdf-forum@hdfgroup.org
> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
>

--
George N. White III <aa056@chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.Hdf-forum@hdfgroup.orghttp://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

roger · November 28, 2010, 1:36pm

winrar says it can uncompress bz2 and tar.bz2 http://www.rarlab.com/otherfmt.htm

Without changing the bz2's file extension run winrar on it and it should produce a hdf file out of it. I haven't run winrar but it may also allow you to view the table of contents of the bz2 file so you know what is in it even before decompressing

···

On 11/28/2010 06:50 AM, mahesh shiramgond wrote:

Hi Roger,
I have OS Windows XP Professional running on my machine with WINRAR compression software.
I tried accordingly as george advised to change the extension but same error.
here I noticed that saved file with .hdf extension is appearing with HDF view icon.
I tried reinstalling HDF view but problem remains same.
Kindly advise, is there any other interface i can use to view these HDF files?
Thanks and Regards
Mahesh

On Sun, Nov 28, 2010 at 2:13 PM, Roger Martin <roger@quantumbioinc.com > <mailto:roger@quantumbioinc.com>> wrote:

    Hi Mahesh,

    I believe George was saying don't change the extension but
    uncompress/unzip them. Through these messages I didn't gather
    which operating system you are using and what compression software
    will work for you. Probably the file inside the *.bz2 has the .h5
    extension which will be there after uncompression.

    On linux or MacOSX boxes you can right click and "Extract here". On windows I use a small Ant script but that takes understanding
    Ant. Someone should know of a bz2 decompressor for you in the
    window's case.

    On 11/28/2010 12:52 AM, mahesh shiramgond wrote:

    Hi George,
    Do you mean to say that I have to save these files as .hdf while
    downloading?
    If yes, do I need to put '.hdf' at the end of the file name? for
    your information this is a zipped file.
    If not, do I need to change the name of the file just adding
    '.hdf' at the end of the file name
    Please suggest and even first option is not opening file but
    showing same error.
    Regards
    mahesh

    On Fri, Nov 26, 2010 at 4:54 PM, George N. White III >> <gnwiii@gmail.com <mailto:gnwiii@gmail.com>> wrote:

        On Fri, Nov 26, 2010 at 5:10 AM, Steve Bissell >> <stephen.bissell@airbus.com >> <mailto:stephen.bissell@airbus.com>> wrote:
        >
        > Hi Mahesh. I've never used the MODIS tool, but out of
        curiosity I checked the
        > web site, it looks to me like what you download from those
        sites are either
        > JPEG, PNG, GeoTIFF or GoogleEarth format files. None of
        those are HDF file
        > formats in any way .... or maybe I'm misunderstanding the
        web site?

        If you use the "download data" button you get an hdf4 file,
        but in
        bzip2 compressed
        form. This has been a major source of confusion for new
        users -- it
        would be nice
        very helpful if hdfview could do some checks for common
        archive and compression
        formats -- people often get data in a form that can't used
        directly
        without realizing some
        extra steps are needed -- a common mistake with NASA OBPG
        files that
        don't have .hdf
        extension is to rename .bz2 to .hdf.

        > Steve
        > --
        > View this message in context:
        http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
        > Sent from the hdf-forum mailing list archive at Nabble.com.
        >
        > _______________________________________________
        > Hdf-forum is for HDF software users discussion.
        > Hdf-forum@hdfgroup.org <mailto:Hdf-forum@hdfgroup.org>
        >
        http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
        >

        --
        George N. White III <aa056@chebucto.ns.ca
        <mailto:aa056@chebucto.ns.ca>>
        Head of St. Margarets Bay, Nova Scotia

        _______________________________________________
        Hdf-forum is for HDF software users discussion.
        Hdf-forum@hdfgroup.org <mailto:Hdf-forum@hdfgroup.org>
        http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

    -- Mahesh Shiramagond
    Kuwait

    _______________________________________________
    Hdf-forum is for HDF software users discussion.
    Hdf-forum@hdfgroup.org <mailto:Hdf-forum@hdfgroup.org>
    http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

    _______________________________________________
    Hdf-forum is for HDF software users discussion.
    Hdf-forum@hdfgroup.org <mailto:Hdf-forum@hdfgroup.org>
    http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

gnwiii · November 28, 2010, 3:51pm

Hi Roger,

I have OS Windows XP Professional running on my machine with WINRAR
compression software.
I tried accordingly as george advised to change the extension but same
error.

I'm not familiar with WINRAR, but many tools do support bzip2. When
you uncompress "filename.bz2" you get "filename". Many of the NASA
hdf files do not provide the hdf extension, and will still load in hdfview, but
many people prefer to add the extension so the (*.hdf) filter can be used.
Unfortunately, this sometimes leads users to rename "filename.bz2" to
"filename.hdf", which won't work.

On linux or Mac OS X the "file" command can be used to verify that you
have an hdf file:

$ ls -l A2006167181000.L2*
140096 -rw-r--r-- 1 gwhite bod 143454404 2010-11-28 11:18 A2006167181000.L2
29340 -rw-r--r-- 1 gwhite bod 30040522 2010-11-28 11:18 A2006167181000.L2.bz2
$ file A2006167181000.L2
A2006167181000.L2: Hierarchical Data Format (version 4) data
$ file A2006167181000.L2.bz2
A2006167181000.L2.bz2: bzip2 compressed data, block size = 900k

here I noticed that saved file with .hdf extension is appearing with HDF
view icon.
I tried reinstalling HDF view but problem remains same.

Kindly advise, is there any other interface i can use to view these HDF
files?

Many matrix languages (python, matlab, octave, R, gnudatalanguage) can
read hdf4 or hdf5 with the appropriate add-ons. Hdf5 is more widely
supported and the h4toh5 tool works for the files I have encountered
(after a bit of experimenation with the options), so in practice I
generally convert hdf4 to hdf5.

I find hdfview helpful when trying to understand the structure of hdf
files, especially when converting to hdf5, so it is worth making an
effort to get hdfview to work.

In my lab, we have many supposedly identical Windows XP systems, all
initially configured with the same "standard" image. I find hdview
fails to work on some of
these -- presumably due to conflicts with user-installed software or
perhaps different
options chosen by the IT tech who configured the systems initially.
It isn't a big deal
for us, as we do most of the heavy lifting with Mac OS X or linux.

Thanks and Regards
Mahesh

Hi Mahesh,

I believe George was saying don't change the extension but
uncompress/unzip them. Through these messages I didn't gather which
operating system you are using and what compression software will work for
you. Probably the file inside the *.bz2 has the .h5 extension which will be
there after uncompression.

On linux or MacOSX boxes you can right click and "Extract here". On
windows I use a small Ant script but that takes understanding Ant. Someone
should know of a bz2 decompressor for you in the window's case.

Hi George,

Do you mean to say that I have to save these files as .hdf while
downloading?

No -- you have to decompress the .bz2 version, which results in an HDF
file that may not have the hdf extension. If you want to use *.hdf filter, then
you have to rename the HDF format file to give it the appropriate extension.

···

On Sun, Nov 28, 2010 at 7:50 AM, mahesh shiramgond <maheshshiramgond@gmail.com> wrote:

On Sun, Nov 28, 2010 at 2:13 PM, Roger Martin <roger@quantumbioinc.com> > wrote:

On 11/28/2010 12:52 AM, mahesh shiramgond wrote:

If yes, do I need to put '.hdf' at the end of the file name? for your
information this is a zipped file.

If not, do I need to change the name of the file just adding '.hdf' at the
end of the file name

Please suggest and even first option is not opening file but showing same
error.

Regards
mahesh

On Fri, Nov 26, 2010 at 4:54 PM, George N. White III <gnwiii@gmail.com> >> wrote:

On Fri, Nov 26, 2010 at 5:10 AM, Steve Bissell >>> <stephen.bissell@airbus.com> wrote:
>
> Hi Mahesh. I've never used the MODIS tool, but out of curiosity I
> checked the
> web site, it looks to me like what you download from those sites are
> either
> JPEG, PNG, GeoTIFF or GoogleEarth format files. None of those are HDF
> file
> formats in any way .... or maybe I'm misunderstanding the web site?

If you use the "download data" button you get an hdf4 file, but in
bzip2 compressed
form. This has been a major source of confusion for new users -- it
would be nice
very helpful if hdfview could do some checks for common archive and
compression
formats -- people often get data in a form that can't used directly
without realizing some
extra steps are needed -- a common mistake with NASA OBPG files that
don't have .hdf
extension is to rename .bz2 to .hdf.

> Steve
> --
> View this message in context:
> http://hdf-forum.184993.n3.nabble.com/HDF-View-file-process-tp1958827p1971771.html
> Sent from the hdf-forum mailing list archive at Nabble.com.
>
> _______________________________________________
> Hdf-forum is for HDF software users discussion.
> Hdf-forum@hdfgroup.org
> http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
>

--
George N. White III <aa056@chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
George N. White III <aa056@chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia

Peter_Cao · November 29, 2010, 4:12pm

Hi Mahesh,

Since both "h4" and "h5" button are disabled, I am pretty sure that the
problem is not your file. It is a Windows XP related issue.

Our HDF5 library and Java JNI is built with .NET. Your XP machine may not
have the required .NET component. This is a known problem. Please see
the page below for the solution.

http://www.hdfgroup.org/HDF5/release/known_problems/index.html

Thanks
--pc

Mahesh · December 1, 2010, 11:45am

Thanks peter,

Yes, this idea clicked to enable both HDF4 and HDF5 buttons near help tool
of the application.
I could able to access HDF files downloded from NASA website.
I can read the data with available files which are all HDF4 files.

Regards
mahesh

···

On Mon, Nov 29, 2010 at 7:12 PM, Peter Cao <xcao@hdfgroup.org> wrote:

Hi Mahesh,

Since both "h4" and "h5" button are disabled, I am pretty sure that the
problem is not your file. It is a Windows XP related issue.

Our HDF5 library and Java JNI is built with .NET. Your XP machine may not
have the required .NET component. This is a known problem. Please see
the page below for the solution.

http://www.hdfgroup.org/HDF5/release/known_problems/index.html

Thanks
--pc

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

Mahesh · December 14, 2010, 7:18am

Dear HDF Group users,

The data(HDF4 files) I am downloading from NASA EOS programme is imported to
HDF Viewer and its only a grid data not Images. How to parse these data to
actual values?

I believe they are in binery form but not actual values of the scientific
data.
Can anybody please help me in converting these numbers to actual data
values?

Thanks and Regards
Mahesh

···

On Wed, Dec 1, 2010 at 2:45 PM, mahesh shiramgond < maheshshiramgond@gmail.com> wrote:

Thanks peter,

Yes, this idea clicked to enable both HDF4 and HDF5 buttons near help tool
of the application.
I could able to access HDF files downloded from NASA website.
I can read the data with available files which are all HDF4 files.

Regards
mahesh

On Mon, Nov 29, 2010 at 7:12 PM, Peter Cao <xcao@hdfgroup.org> wrote:

Hi Mahesh,

Since both "h4" and "h5" button are disabled, I am pretty sure that the
problem is not your file. It is a Windows XP related issue.

Our HDF5 library and Java JNI is built with .NET. Your XP machine may not
have the required .NET component. This is a known problem. Please see
the page below for the solution.

http://www.hdfgroup.org/HDF5/release/known_problems/index.html

Thanks
--pc

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

--
Mahesh Shiramagond
Kuwait

Peter_Cao · December 14, 2010, 4:59pm

You may want to try HDF-EOS plugin to see if the data looks good for you.
http://newsroom.gsfc.nasa.gov/sdptoolkit/HDFView/HDFViewDownload.html

···

On 12/14/2010 1:18 AM, mahesh shiramgond wrote:

Dear HDF Group users,
The data(HDF4 files) I am downloading from NASA EOS programme is imported to HDF Viewer and its only a grid data not Images. How to parse these data to actual values?
I believe they are in binery form but not actual values of the scientific data.
Can anybody please help me in converting these numbers to actual data values?
Thanks and Regards
Mahesh

On Wed, Dec 1, 2010 at 2:45 PM, mahesh shiramgond > <maheshshiramgond@gmail.com <mailto:maheshshiramgond@gmail.com>> wrote:

    Thanks peter,
    Yes, this idea clicked to enable both HDF4 and HDF5 buttons near
    help tool of the application.
    I could able to access HDF files downloded from NASA website.
    I can read the data with available files which are all HDF4 files.
    Regards
    mahesh

    On Mon, Nov 29, 2010 at 7:12 PM, Peter Cao <xcao@hdfgroup.org > <mailto:xcao@hdfgroup.org>> wrote:

        Hi Mahesh,

        Since both "h4" and "h5" button are disabled, I am pretty sure
        that the
        problem is not your file. It is a Windows XP related issue.

        Our HDF5 library and Java JNI is built with .NET. Your XP
        machine may not
        have the required .NET component. This is a known problem.
        Please see
        the page below for the solution.

        http://www.hdfgroup.org/HDF5/release/known_problems/index.html

        Thanks
        --pc

        _______________________________________________
        Hdf-forum is for HDF software users discussion.
        Hdf-forum@hdfgroup.org <mailto:Hdf-forum@hdfgroup.org>
        http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

    -- Mahesh Shiramagond
    Kuwait

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

Mahesh · December 15, 2010, 5:55am

In metadata of the data grid file converting these binery forms is given
like below
can anybody confirm whthere I can use this scaling equation for converting
data?

l3m_data~copy~copy (720, 94)
    16-bit unsigned integer, 481 x 481
    Number of attributes = 5
        Fill = 65535
        Scaling = linear
        Scaling Equation = (Slope*l3m_data) + Intercept = Parameter value
        Slope = 7.17185E-4
        Intercept = -2.0

Thanks in Advance
Mahesh

···

On Tue, Dec 14, 2010 at 7:59 PM, Peter Cao <xcao@hdfgroup.org> wrote:

You may want to try HDF-EOS plugin to see if the data looks good for you.
http://newsroom.gsfc.nasa.gov/sdptoolkit/HDFView/HDFViewDownload.html

On 12/14/2010 1:18 AM, mahesh shiramgond wrote:

Dear HDF Group users,

The data(HDF4 files) I am downloading from NASA EOS programme is imported
to HDF Viewer and its only a grid data not Images. How to parse these data
to actual values?

I believe they are in binery form but not actual values of the scientific
data.
Can anybody please help me in converting these numbers to actual data
values?

Thanks and Regards
Mahesh

On Wed, Dec 1, 2010 at 2:45 PM, mahesh shiramgond < > maheshshiramgond@gmail.com> wrote:

Thanks peter,

Yes, this idea clicked to enable both HDF4 and HDF5 buttons near help tool
of the application.
I could able to access HDF files downloded from NASA website.
I can read the data with available files which are all HDF4 files.

Regards
mahesh

On Mon, Nov 29, 2010 at 7:12 PM, Peter Cao <xcao@hdfgroup.org> wrote:

Hi Mahesh,

Since both "h4" and "h5" button are disabled, I am pretty sure that the
problem is not your file. It is a Windows XP related issue.

Our HDF5 library and Java JNI is built with .NET. Your XP machine may not
have the required .NET component. This is a known problem. Please see
the page below for the solution.

http://www.hdfgroup.org/HDF5/release/known_problems/index.html

Thanks
--pc

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.Hdf-forum@hdfgroup.orghttp://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

Mahesh · December 15, 2010, 8:52am

Dear Peter,

I am unable to intsall this plug in I followed all steps mentioned in read
me html link but error says "path doesnt exist".
I dont know where I am wrong?

Please suggest anyotherways

Thanks and Regards
mahesh

···

On Tue, Dec 14, 2010 at 7:59 PM, Peter Cao <xcao@hdfgroup.org> wrote:

You may want to try HDF-EOS plugin to see if the data looks good for you.
http://newsroom.gsfc.nasa.gov/sdptoolkit/HDFView/HDFViewDownload.html

On 12/14/2010 1:18 AM, mahesh shiramgond wrote:

Dear HDF Group users,

The data(HDF4 files) I am downloading from NASA EOS programme is imported
to HDF Viewer and its only a grid data not Images. How to parse these data
to actual values?

I believe they are in binery form but not actual values of the scientific
data.
Can anybody please help me in converting these numbers to actual data
values?

Thanks and Regards
Mahesh

On Wed, Dec 1, 2010 at 2:45 PM, mahesh shiramgond < > maheshshiramgond@gmail.com> wrote:

Thanks peter,

Yes, this idea clicked to enable both HDF4 and HDF5 buttons near help tool
of the application.
I could able to access HDF files downloded from NASA website.
I can read the data with available files which are all HDF4 files.

Regards
mahesh

On Mon, Nov 29, 2010 at 7:12 PM, Peter Cao <xcao@hdfgroup.org> wrote:

Hi Mahesh,

Since both "h4" and "h5" button are disabled, I am pretty sure that the
problem is not your file. It is a Windows XP related issue.

Our HDF5 library and Java JNI is built with .NET. Your XP machine may not
have the required .NET component. This is a known problem. Please see
the page below for the solution.

http://www.hdfgroup.org/HDF5/release/known_problems/index.html

Thanks
--pc

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait

--
Mahesh Shiramagond
Kuwait

_______________________________________________
Hdf-forum is for HDF software users discussion.Hdf-forum@hdfgroup.orghttp://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

_______________________________________________
Hdf-forum is for HDF software users discussion.
Hdf-forum@hdfgroup.org
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org

--
Mahesh Shiramagond
Kuwait