Hi,
If you are on Windows 64-bit and don't need Python nor Oracle, use this:
http://gisinternals.com/sdk/Download.aspx?file=release-1600-x64-gdal-mapserver.zip
Installation is like with FWTools: unzip. Go to installation directory, run
"sdkshell" or perhaps "sdkshell hideoci".
This is for sure problem free and good to have always on all your computers.
For Python v. 2.7 and Oracle I have installed
http://gisinternals.com/sdk/Download.aspx?file=release-1600-x64-gdal-mapserver\gdal-110-1600-x64-core.msi
http://gisinternals.com/sdk/Download.aspx?file=release-1600-x64-gdal-mapserver\GDAL-1.10.0.win-amd64-py2.7.msi
http://gisinternals.com/sdk/Download.aspx?file=release-1600-x64-gdal-mapserver\gdal-110-1600-x64-oracle.msi
I have not yet studied the environment settings, I just open the GDAL command
window that appears into Start menu after msi installation and used python
tools with absolute paths like
c:\python27\python C:\GDAL_dev\bin\gdal\python\scripts\gdal_edit.py [parameters]
-Jukka-
Jonathan Moules wrote:
Hi Jukka,
I've tried that one before. First there's the fact there are far too many
options and I can never be sure I'm getting the right thing (the page assumes a
significant level of knowledge about what package is what). Second the python
scripts (i..e. gdal_merge.py) don't work "out of the box" and it's non-obvious
how to fix that (I just noticed there are also "GDA: python bindings" extension
things, but just done that and it still doesn't work so... :-S ).
For ease of use I prefer http://fwtools.maptools.org/ - except that it seems to
be an outdated version of GDAL (so I'm hitting some GDAL bugs there) and has an
issue with batch files too.
And the QGIS version comes with all manner of environmental variable issues
that stop it from working stand-alone for me.
I think I may have tried the version that comes with FME too, but similar
issues.
GDAL is a powerful tool, but as I've learnt to expect from command-line
software, it's not easy to install/use. :-(
Regards,
Jonathan
On 26 November 2013 11:27, Rahkonen Jukka
<[email protected]<mailto:[email protected]>> wrote:
Hi,
What exactly is wrong with the builds from http://gisinternals.com/sdk/? I have
been using them for years with good success.
-Jukka Rahkonen-
Jonathan wrote:
Thanks for the replies. My other problem is that I don't have a good GDAL
install (precompiled for windows). Every one I've tried has been
buggy/non-functional in some critical way (typically environmental variable
issues). I tried creating a nice little batch file to do everything at once in
sequence for each raster, but alas that didn't work out so its "do things
manually".
I'll have to do some more testing.
Thanks,
Jonathan
On 22 November 2013 18:58, Even Rouault
<[email protected]<mailto:[email protected]>> wrote:
Le vendredi 22 novembre 2013 19:18:56, Rahkonen Jukka a écrit :
> Hi,
>
> I think that the reason is that is is hard/impossible to make an optimal
> deflate compressed tiff when gdal_merge goes through the circle "open file
> - add data - close file". There are other alternatives to test: - You can
> use a non-optimal deflate compressed tiff as a temporary file - is is
> lossless and the final result will be identical. - Use gdalbuildvrt for
> making an interim .VRT file and convert that to final product instead of
> using gdal_merge.py. Perhaps GDAL can make an optimal deflate compressed
> image from the VRT file with one run.
>
> A hint: If you play with big datasets and deflate compressed images GDAL
> sometimes does not guess when it should jump into BigTIFF. Give the -co
> bigtiff=yes parameter manually if you feel that it could be needed.
>
> If Even is still sneaking here he can say if the behaviour you see with
> gdal_merge.py is expected or a bug. Otherwise you can ask it from gdal-dev
> mailing list.
I'm not sure which gdal_merge behaviour Jukka is refering too, but indeed it
might not be the appropriate tool to mosaic stuff into a compressed geotiff due
to the way it operates (it can have to do uncompression / recompression cycles
that will waste space in the geotiff). gdalbuildvrt to do the mosaicing
(without a disk footprint of only a few bytes) followed by gdal_translate to
compress will lead to the optimal file size.
>
> -Jukka-
>
> ________________________________
> Jonathan Moules wrote:
>
> On 21 November 2013 21:23, Rahkonen Jukka
> <[email protected]<mailto:[email protected]><mailto:[email protected]<mailto:[email protected]>>>
> wrote: I
> would try if it makes difference to save result from gdal_merge first into
> uncompressed tiff and compress it with deflate in a separate run.
>
>
> Yep, that worked. Although that's unfeasible for the full dataset; I don't
> have enough diskspace for an uncompressed version.
>
> Also, doing that (deflate, level 9), the tiled version was about 15%
> smaller than the untiled version.
>
> Thanks!
> Jonathan
>
>
> Jukka Rahkonen
>
> ________________________________
> Jonathan
> Moules<mailto:[email protected]<mailto:[email protected]>>
> wrote:
>
> It is not completely surprising. If there are no repeateable patterns in
> the uncompressed stream, deflate can result in (a bit) larger files. You
> might want to try with -co INTERLEAVE=BAND added to see if it improves
> things. But generally DEFLATE is not appropriate for aerial imagery.
>
>
> The "bit" larger files are typically about double the size of the
> uncompressed one!
>
> I know deflate isn't as well suited, but I'm experimenting with a whole
> bunch of different settings to see what sticks.
>
> ======
>
> I'm now trying to get the four band into GeoServer (regular GeoTIFF), but
> it's not having it. I've created it the same way as the 3 band: gdal_merge
> -q -o rgbi.tif -of GTiff -co TILED=YES -co BIGTIFF=YES -co COMPRESS=JPEG
> -co JPEG_QUALITY=25 -co BLOCKXSIZE=512 -co BLOCKYSIZE=512 --optfile
> tiff_list.txt (low compression for testing). No pyramids yet.
>
> The first thing I notice is that the 4 band is *smaller* (118MB) than the 3
> band (164MB).
>
> The gdalinfo for the four band:
>
> Driver: GTiff/GeoTIFF
> Files: rgbi.tif
> Size is 8000, 24000
> Coordinate System is:
> PROJCS["OSGB 1936 / British National Grid",
> [brevity removed]
> Origin = (419000.000000000000000,240000.000000000000000)
> Pixel Size = (0.125000000000000,-0.125000000000000)
> Metadata:
> AREA_OR_POINT=Area
> Image Structure Metadata:
> COMPRESSION=JPEG
> INTERLEAVE=PIXEL
> Corner Coordinates:
> Upper Left ( 419000.000, 240000.000) ( 1d43'22.27"W, 52d 3'27.49"N)
> Lower Left ( 419000.000, 237000.000) ( 1d43'22.87"W, 52d 1'50.38"N)
> Upper Right ( 420000.000, 240000.000) ( 1d42'29.76"W, 52d 3'27.37"N)
> Lower Right ( 420000.000, 237000.000) ( 1d42'30.39"W, 52d 1'50.26"N)
> Center ( 419500.000, 238500.000) ( 1d42'56.32"W, 52d 2'38.88"N)
> Band 1 Block=512x512 Type=Byte, ColorInterp=Red
> Mask Flags: PER_DATASET ALPHA
> Band 2 Block=512x512 Type=Byte, ColorInterp=Green
> Mask Flags: PER_DATASET ALPHA
> Band 3 Block=512x512 Type=Byte, ColorInterp=Blue
> Mask Flags: PER_DATASET ALPHA
> Band 4 Block=512x512 Type=Byte, ColorInterp=Alpha
>
> ----
>
> The GeoServer logs contain an error (WMS GetMap request):
> 2013-11-20 17:56:07,498 ERROR [org.geoserver.ows] -
> java.lang.RuntimeException: javax.imageio.IIOException: Unsupported Image
> Type at
> com.sun.media.jai.imageioimpl.ImageReadOpImage.computeTile(ImageReadOpImag
> e.java:706) at
> com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java
> :904) at javax.media.jai.OpImage.getTile(OpImage.java:1129)
> ....
> Caused by: javax.imageio.IIOException: Unsupported Image Type
> at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(Unknown
> Source) at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(Unknown
> Source) at
> it.geosolutions.imageioimpl.plugins.tiff.TIFFJPEGDecompressor.decodeRaw(TI
> FFJPEGDecompressor.java:278)
>
>
> Ideally I'm looking to have one source file which can be symbolised as not
> just RGB, but also as any number of false-colour possibilities.
>
> Any suggestions anyone? I'm stumbling into new (for me) territory here.
>
> Thanks,
> Jonathan
>
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