Opened 14 years ago

Closed 14 years ago

#3751 closed defect (fixed)

ENVI driver : SetGeoTransform() followed by GetGeoTransform() doesn't work, causing gdal_merge not to work

Reported by: chohnz Owned by: warmerdam
Priority: normal Milestone: 1.7.3
Component: default Version: unspecified
Severity: normal Keywords: gdal_merge, zeros, envi
Cc:

Description

I cant seem to get gdal_merge to produce real output. A sample of what I am running: gdal_merge.py -o test.bsq -of ENVI -n -32768 -init -999 -ot int16 tif1.tif tif2.tif

My output image is all -999. If I leave the no data value out, then I end up with an image where the no data values(-32768) and init values (-999) are in the appropriate locations, but the locations where I should have data values are all zeros.

Ive tried different output formats and including/not including most parameters (e.g -ot, -ps, ...) but the output is always the same. It also runs in just a few seconds - which doesn't seem right since these input files are over half a GB each.

Can anyone help? Thanks, M

Change History (1)

comment:1 by Even Rouault, 14 years ago

Keywords: envi added
Milestone: → 1.7.3
Resolution: → fixed
Status: new → closed
Summary: gdal_merge output all zeros or init values → ENVI driver : SetGeoTransform() followed by GetGeoTransform() doesn't work, causing gdal_merge not to work

Upon investigation, this had little to do with gdal_merge, but it was rather a defect in the ENVI driver.

Fixed in trunk (r20644) and in branches/1.7 (r20645). Test added in r20646

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