On 2015/03/16 09:42, Even Rouault wrote:
Selon Zoltan Szecsei <[email protected]>:

Hi,
I've been banging my head for an hour or so, and I cannot spot my
(deliberate) error in trying to clip out an area from a vrt file.

     *geograph@gs01:/20150315_work/gdal$* gdal_translate --version
     GDAL 2.0.0dev, released 2014/04/16

     *geograph@gs01:/20150315_work/gdal$* gdal_translate -projwin -32666
     -3284691 -30125 -3288248 -of GTiff -co TFW=YES -co COMPRESS=LZW
     /mnt/geo_lvm0/gisdata/raster/ortho/ngi_20141205_WGS1984_Lo31.vrt
     AW25a.tif
     Input file size is 341744, 512321
     Computed -srcwin 129951 151143 5082 7114 from projected window.
     *geograph@gs01:/20150315_work/gdal$*

and AW25a.tif is not created.
Zoltan,

Nothing strikes my eyes as obviously wrong. You really mean no output file at
all ? And the commands runs instantenously ?

Correct


I have also tried:

     removing everything except projwin, srcdata and dstdata - to no avail.
     using the computed values with -srcwin instead of -projwin
     putting quotes around the -co options


Any thoughts welcome.
Thanks in advance,
Zoltan

     *geograph@gs01:/20150315_work/gdal$* gdalinfo
     /mnt/geo_lvm0/gisdata/raster/orthos/ngi_20141205_WGS1984_Lo31.vrt
     Driver: VRT/Virtual Raster
     Files: /mnt/geo_lvm0/gisdata/raster/orthos/ngi_20141205_WGS1984_Lo31.vrt


/mnt/geo_lvm0/gisdata/raster/orthos/ngi_20141205/2930AA/2930AA_01_2009_116_RGB_RECT.tif
     *dot...dot...dot...*



/mnt/geo_lvm0/gisdata/raster/orthos/ngi_20141205/3130AB/3130AB_01_2013_559_RGB_RECT.tif

/mnt/geo_lvm0/gisdata/raster/orthos/ngi_20141205/3130AC/3130AC_01_06_2013_559_RGB_RECT.tif
     Size is 341744, 512321
     Coordinate System is:
     PROJCS["Projection: Transverse Mercator; Datum: WGS84; Ellipsoid:
     WGS84",
          GEOGCS["WGS 84",
              DATUM["WGS_1984",
                  SPHEROID["WGS 84",6378137,298.257223563,
                      AUTHORITY["EPSG","7030"]],
                  AUTHORITY["EPSG","6326"]],
              PRIMEM["Greenwich",0],
              UNIT["degree",0.0174532925199433],
              AUTHORITY["EPSG","4326"]],
          PROJECTION["Transverse_Mercator"],
          PARAMETER["latitude_of_origin",0],
          PARAMETER["central_meridian",31],
          PARAMETER["scale_factor",1],
          PARAMETER["false_easting",0],
          PARAMETER["false_northing",0],
          UNIT["metre",1,
              AUTHORITY["EPSG","9001"]]]
     Origin = (-97641.549180324524059,-3209119.323926338460296)
     Pixel Size = (0.500000000000000,-0.500000000000000)
     Corner Coordinates:
     Upper Left  (  -97641.549,-3209119.324) ( 29d59'52.79"E, 28d59'41.68"S)
     Lower Left  (  -97641.549,-3465279.824) ( 29d58'27.71"E, 31d18'19.15"S)
     Upper Right (   73230.451,-3209119.324) ( 31d45' 5.46"E, 28d59'47.57"S)
     Lower Right (   73230.451,-3465279.824) ( 31d46' 9.27"E, 31d18'25.60"S)
     Center      (  -12205.549,-3337199.574) ( 30d52'23.89"E, 30d 9'14.66"S)
     Band 1 Block=128x128 Type=Byte, ColorInterp=Red
        NoData Value=0
     Band 2 Block=128x128 Type=Byte, ColorInterp=Green
        NoData Value=0
     Band 3 Block=128x128 Type=Byte, ColorInterp=Blue
        NoData Value=0
     *geograph@gs01:/20150315_work/gdal$ *






--

===========================================
Zoltan Szecsei PrGISc [PGP0031]
Geograph (Pty) Ltd.
GIS and Photogrammetric Services

P.O. Box 7, Muizenberg 7950, South Africa.

Mobile: +27-83-6004028
Fax:    +27-86-6115323     www.geograph.co.za
===========================================

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