[gdal-dev] gdalbuildvrt could not use worldfile

[Idan Miara]

It might indeed be the missing CRS info (world files include only the pixel
size and corner pixel).
Try to add the -a_srs parameter as Jukka suggested.
for instance, add "-a_srs EPSG:32632" (if you are using WGS84 / UTM Zone
32N https://epsg.io/32632 <https://epsg.io/32630>)

On Thu, 20 Aug 2020 at 15:11, APM <apschwimmer at apmland.de> wrote:

> Dear Idan,
>
>
> thank you for your input.
>
>
> I use the .vrt step to assemble a group of tif's to one common file.
>
> In a second step I use something like
>
> gdal_translate -of GTiff -co COMPRESS=LZW -co tiled=yes maps.vrt maps.tiff
>
> But the maps.tiff has no georeference data's as well.
>
>
> This two steps works well with other Geotiff tiles, but maybe there's a
> more easy way to create one map from several tiles.
>
>
> Kind regards
>
>
> Piet
>
>
>
>
>
> Am 20.08.20 um 13:49 schrieb Idan Miara:
>
> Hi,
>
> According to gdalinfo your vrt looks fine, so it might be a problem with
> the vrt support in mapviewer.
> What are you trying to accomplish with this vrt? if you just want to
> georeference your tif you could try:
> gdal_translate -of GTiff input.tif ouput.tif
> use "-co COMPRESS=DEFLATE -co TILED=YES -co BIGTIFF=IF_SAFER" or other
> gtiff parameters as needed:
> https://gdal.org/drivers/raster/gtiff.html
>
> Idan
>
>
> On Thu, 20 Aug 2020 at 12:49, APM <apschwimmer at apmland.de> wrote:
>
>> Hello list,
>>
>>
>> I'm a beginner with gdal and use Linux Debian testing as the OS.
>>
>>
>> I like to create a .vrt file to use a map.
>>
>> The map comes with a worldfile .tfw:
>>
>> 1.2700000000
>> 0.0000000000
>> 0.0000000000
>> -1.2700000000
>> 376279.1000000000
>> 5679613.9199999999
>>
>>
>> If I try to build the .vrt by using
>>
>>
>> gdalbuildvrt map_1.vrt map_1.tif
>>
>>
>> The .vrt is present now.
>>
>>
>> But I can't use it in a mapviewer, which gives out a message, that the
>> georeferences are not present.
>>
>>
>> gdalinfo map_1.tif
>> Driver: GTiff/GeoTIFF
>> Files: map_1.tif
>>         map_1.tfw
>> Size is 16252, 13444
>> Origin = (376278.464999999967404,5679614.554999999701977)
>> Pixel Size = (1.270000000000000,-1.270000000000000)
>> Image Structure Metadata:
>>    COMPRESSION=DEFLATE
>>    INTERLEAVE=PIXEL
>> Corner Coordinates:
>> Upper Left  (  376278.465, 5679614.555)
>> Lower Left  (  376278.465, 5662540.675)
>> Upper Right (  396918.505, 5679614.555)
>> Lower Right (  396918.505, 5662540.675)
>> Center      (  386598.485, 5671077.615)
>> 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
>>
>>
>> gdalinfo map_1.vrt
>> Driver: VRT/Virtual Raster
>> Files: map_1.vrt
>>         map_1.tif
>> Size is 16252, 13444
>> Origin = (376278.464999999967404,5679614.554999999701977)
>> Pixel Size = (1.270000000000000,-1.270000000000000)
>> Corner Coordinates:
>> Upper Left  (  376278.465, 5679614.555)
>> Lower Left  (  376278.465, 5662540.675)
>> Upper Right (  396918.505, 5679614.555)
>> Lower Right (  396918.505, 5662540.675)
>> Center      (  386598.485, 5671077.615)
>> 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
>>
>>
>> Can you give me a hint, please?
>>
>>
>> Thank you!
>>
>>
>> KR
>>
>> Piet
>>
>>
>>
>>
>> _______________________________________________
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>
>
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