Add band selection option to gdalbuildvrt

[bishop]

I have tiles with great amount of bands - more than 500. I want to create mosaic vrt for 3-4 bands only.

Need -b ptions to gdalbuildvrt

Example command:

gdalbuildvrt -b 10 -b 100 -b 1000 -input_file_list file.lst bands.vrt

[bishop]

Implemented in r25650

[Even Rouault]

Dmitry, this changeset apparently breaks the expected result of test_gdalbuildvrt_4 of autotest/utilities/test_gdalbuildvrt.py. I let you look if it is just the expected result that must be adapted to the new behaviour.

  TEST: test_gdalbuildvrt_4 ... Warning 6: gdalbuildvrt does not support heterogenous projection. Skipping tmp/gdalbuildvrt5.tif
success
  TEST: test_gdalbuildvrt_5 ... fail
    line 60: Wrong raster dimensions : 460 x 480

[bishop]

Even, the problem is with test_gdalbuildvrt_5 not 4. The 5-th tests what all input rasters should have the same band count. My changes to gdalbuildvrt make it posible to mosaic rasters with different band count. If option b is present the max band number set from it, else - max band number set from the first raster band count. If other input rasters have less band count than max band number, they will be skipped.

[Even Rouault]

No problem, I let you fix the expected result of the test, disable it or do whatever appropriate action.

[bishop]

By now, I think disabling of the test is good idea. I'll provide a patch which doing it. If you agree - please commit it to GDAL autotest and close this ticket.

[bishop]

Disable test_gdalbuildvrt_5

[Even Rouault]

I have very little time to do GDAL work at the moment, so I let you commit it

[bishop]

Fixed in r25655