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 <[email protected]
<mailto:[email protected]>> 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
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