# h5toh4 errors "class not found" in convert\_attr **URL:** \ **Category:** Hdf-forum archives\ **Created:** [October 23, 2010, 1:04pm UTC](https://forum.hdfgroup.org/t/h5toh4-errors-class-not-found-in-convert-attr/1947 "2010-10-23T13:04:49Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![rredmon](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/r/4da419/32.png) [@rredmon](https://forum.hdfgroup.org/u/rredmon)\ **Post date:** [October 23, 2010, 1:04pm UTC](https://forum.hdfgroup.org/t/h5toh4-errors-class-not-found-in-convert-attr/1947/1 "2010-10-23T13:04:49Z")
I'm trying to convert this H5 (created with IDL's netCDF library and NETCDF4\_FORMAT option set): [http://dl.dropbox.com/u/9834776/j5f1610221.h5](http://dl.dropbox.com/u/9834776/j5f1610221.h5) to an HDF4 file. This is the resulting file: [http://dl.dropbox.com/u/9834776/j5f1610221.h4](http://dl.dropbox.com/u/9834776/j5f1610221.h4) Here are a bunch of errors; should they be ignored?: wicklow:data robr$ ~/packages/h4toh5-2.1.1-macosxUB/bin/h5toh4 j5f1610221.h5 j5f1610221.h4 Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: 9 class not found Error detected in convert\_attr() [h5toh4.c line 2169] Error: H5Sget\_simple\_extent\_npoints() returned inappropriate value. Error detected in convert\_dataset() [h5toh4.c line 1237] Error: convert\_dataset did not work for Time Error detected in convert\_all() [h5toh4.c line 2466] Warning: H5T\_COMPOUND attribute not implemented. Warning: H5T\_COMPOUND attribute not implemented. wicklow:data robr$ > **ยทยทยท** > > -- > View this message in context: [http://hdf-forum.184993.n3.nabble.com/h5toh4-errors-class-not-found-in-convert-attr-tp1757933p1757933.html](http://hdf-forum.184993.n3.nabble.com/h5toh4-errors-class-not-found-in-convert-attr-tp1757933p1757933.html) > Sent from the hdf-forum mailing list archive at [Nabble.com](http://Nabble.com).