Hi Simone,
I've not tried that version before.
However, having just tried it, gdal_merge doesn't work in that version
either. It's not in the environmental variables, and when I navigate to it
and try and run it directly I get a python error that seems to be related
to importing.
Cheers,
Jonathan
On 26 November 2013 12:04, Simone Giannecchini <
simone.giannecch...@geo-solutions.it> wrote:
> Ciao Jonathan,
> I would use the one that Jukka suggests. We do use it internally and
> we do use that one for ImageIO-Ext hence GeoServer.
>
> In terms of which one to use I would go for these two:
>
> - windows 32 bits
>
> http://www.gisinternals.com/sdk/PackageList.aspx?file=release-1600-gdal-1-10-1-mapserver-6-4-0.zip
> - windows 64 bits
>
> http://www.gisinternals.com/sdk/PackageList.aspx?file=release-1600-x64-gdal-1-10-1-mapserver-6-4-0.zip
>
> Regards,
> Simone Giannecchini
> ==
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>
> On Tue, Nov 26, 2013 at 12:46 PM, Jonathan Moules
> <jonathanmou...@warwickshire.gov.uk> 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 to be an outdated version of GDAL (so I'm hitting some GDAL bugs there)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 <jukka.rahko...@mmmtike.fi>
> 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 <even.roua...@mines-paris.org>
> >> 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
> >> > <jukka.rahko...@mmmtike.fi<mailto:jukka.rahko...@mmmtike.fi>> 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:jonathanmou...@warwickshire.gov.uk> 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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