Hi Andrea,
How do I set the black color to transparent in Geoserver for ECW?
Thanks,Ron
On Wednesday, 24 October 2018, 16:01:19 CEST, Simone Giannecchini
<[email protected]> wrote:
Hi Ron,we tend to use geotiff with various compressions.
A decent alternative to ECW is geotiff with JPEG compression at visually
lossless level (i.e. lossy but almost invisible to human eye) with raster masks
to mitigate compression artifacts.
The alternative is to set the transparent color in GeoServer to black for ECW.
Regards,
Simone Giannecchini
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On Sun, Oct 21, 2018 at 9:16 PM Ron Lindhoudt via Geoserver-users
<[email protected]> wrote:
Hi Andrea,
This is the GDALINFO:
C:\ECW\Weesp>gdalinfo Parcel2_Weesp_Mosaic.ecw
Driver: ECW/ERDAS Compressed Wavelets (SDK 3.x)
Files: Parcel2_Weesp_Mosaic.ecw
Size is 175000, 175000
Coordinate System is:
PROJCS["NUTM31",
GEOGCS["RIJKDRIEHOEKSMETING",
DATUM["RD",
SPHEROID["BESS1841",6377397.155,299.1528128]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",3],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["Meter",1]]
Origin = (129500.000000000000000,483000.000000000000000)
Pixel Size = (0.040000000000000,-0.040000000000000)
Corner Coordinates:
Upper Left ( 129500.000, 483000.000) ( 0d20'15.75"W, 4d21'45.91"N)
Lower Left ( 129500.000, 476000.000) ( 0d20'14.75"W, 4d17'58.30"N)
Upper Right ( 136500.000, 483000.000) ( 0d16'28.99"W, 4d21'46.91"N)
Lower Right ( 136500.000, 476000.000) ( 0d16'28.01"W, 4d17'59.28"N)
Center ( 133000.000, 479500.000) ( 0d18'21.87"W, 4d19'52.60"N)
Band 1 Block=175000x1 Type=Byte, ColorInterp=Red
Overviews: 87500x87500, 43750x43750, 21875x21875, 10937x10937, 5468x5468,
2734x2734, 1367x1367, 683x683, 341x341, 170x170
Band 2 Block=175000x1 Type=Byte, ColorInterp=Green
Overviews: 87500x87500, 43750x43750, 21875x21875, 10937x10937, 5468x5468,
2734x2734, 1367x1367, 683x683, 341x341, 170x170
Band 3 Block=175000x1 Type=Byte, ColorInterp=Blue
Overviews: 87500x87500, 43750x43750, 21875x21875, 10937x10937, 5468x5468,
2734x2734, 1367x1367, 683x683, 341x341, 170x170
Maybe QGIS detects the background color black as to be transparent?
In the Geoserver ImageMosaic plugin you can map an inputcolor to be
transparent.
But this is not possible in the Geoserver ECW plugin.
What do you use instead of ECW for rasters that is not too big, time and
memory consuming?
Thanks,
Ron
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Please make sure you read the following two resources before posting to this
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