Opened 9 years ago

Closed 5 years ago

#6051 closed defect (wontfix)

Problems reading older MODIS Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day HDF data

Reported by: markusm Owned by: warmerdam
Priority: normal Milestone: closed_because_of_github_migration
Component: default Version: 1.11.2
Severity: normal Keywords: HDF, MODIS
Cc:

Description (last modified by markusm)

The problem is in detail described here http://gis.stackexchange.com/questions/155326/reprojecting-modis-sea-ice-extent-and-ist-data-using-gdal, but in a nutshell:

GDAL is able to read and write new MOD29 data, but older ones get garbled up. I tried both gdal_translate and the Python API. I am now certain that the problem is not related to a wrong coordinate reference system (NSIDC confirmed that both old and new datasets should use EPSG:3409).

gdal_translate -unscale -srcwin 500 500 3500 3500 -a_srs epsg:3409 HDF4_EOS:EOS_GRID:"MOD29E1D.A2009345.005.2009346083234.hdf":MOD_Grid_Seaice_4km_South:Ice_Surface_Temperature_SP MOD29E1D.A2009345.005.2009346083234.tif
gdal_translate -unscale -srcwin 500 500 3500 3500 -a_srs epsg:3409 HDF4_EOS:EOS_GRID:"MOD29E1D.A2014345.005.2014351005302.hdf":MOD_Grid_Seaice_4km_South:Ice_Surface_Temperature_SP MOD29E1D.A2014345.005.2014351005302.tif

The exact same happens when using the GDAL Python API, test program attached.

These are the test files that I used: ftp://n5eil01u.ecs.nsidc.org/SAN/MOST/MOD29E1D.005/2009.12.11/ and ftp://n5eil01u.ecs.nsidc.org/SAN/MOST/MOD29E1D.005/2014.12.11/ .

Attachments (1)

process_ist.py (4.2 KB ) - added by markusm 9 years ago.
Python test script

Download all attachments as: .zip

Change History (3)

by markusm, 9 years ago

Attachment: process_ist.py added

Python test script

comment:1 by markusm, 9 years ago

Description: modified (diff)

comment:2 by Even Rouault, 5 years ago

Milestone: closed_because_of_github_migration
Resolution: wontfix
Status: newclosed

This ticket has been automatically closed because Trac is no longer used for GDAL bug tracking, since the project has migrated to GitHub. If you believe this ticket is still valid, you may file it to https://github.com/OSGeo/gdal/issues if it is not already reported there.

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