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huge tiff files fail

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huge tiff files fail Empty huge tiff files fail

Post  michi on Fri Jul 22, 2011 12:04 pm

I have plenty multi-gigabyte TIFF files and oruxmapsdesktop chokes on those. Tried something between 3 and 4GB, 8bit colortable, lzw compression, tiled, with overviews. oruxmapsdesktop seems to work ok but the result sql is only 200MB in size and doesnt display in oruxmaps.

the same tif files work flawlessly in globalmapper and ttqv.

$ gdalinfo igntest.tif
Driver: GTiff/GeoTIFF
Files: igntest.tif
Size is 96000, 112000
Coordinate System is `'
Metadata:
TIFFTAG_XRESOLUTION=96
TIFFTAG_YRESOLUTION=96
TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
Image Structure Metadata:
COMPRESSION=LZW
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0,112000.0)
Upper Right (96000.0, 0.0)
Lower Right (96000.0,112000.0)
Center (48000.0,56000.0)
Band 1 Block=256x256 Type=Byte, ColorInterp=Palette
Overviews: 24000x28000, 12000x14000, 6000x7000, 3000x3500
Color Table (RGB with 256 entries)
0: 0,0,0,255
1: 255,255,255,255
...

michi
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huge tiff files fail Empty pixel limit

Post  michi on Mon Jul 25, 2011 4:04 pm

where is the size limit of oruxmapsdekstop? i tried a 30000x30000 tif and that worked nicely, but a 50000x50000 fails miserably. you arent using 16 bit signed datas somewhere are you? 32767?

this is quite hard to find out with trial and error. if you try a too large tif, oruxmapsdesktop still needs quite a long time to calculate. only the result will be almost empty with only a few rubbish pixels here and there.


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huge tiff files fail Empty Re: huge tiff files fail

Post  orux on Mon Jul 25, 2011 6:39 pm

michi wrote:where is the size limit of oruxmapsdekstop? i tried a 30000x30000 tif and that worked nicely, but a 50000x50000 fails miserably. you arent using 16 bit signed datas somewhere are you? 32767?

this is quite hard to find out with trial and error. if you try a too large tif, oruxmapsdesktop still needs quite a long time to calculate. only the result will be almost empty with only a few rubbish pixels here and there.


Hi,

Send me a link to one of those 50.000x50.000 files.

I do not know the limit,

try (if you can) with more memory assigned to oruxmaps (edit oruxmapsdesktop.bat file):

java -Xmx512m -jar OruxMapsDesktop.jar

orux

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huge tiff files fail Empty Re: huge tiff files fail

Post  michi on Thu Aug 04, 2011 8:23 am

i cant really upload those failing map monsters... they're all around 1-4GB in size and my upstream is way too slow. if you're interested in working with big files, i could snailmail you a harddisk.

however... i still think that making oruxmaps work with RMAP would be preferable to spending more time and brainpower on oruxmapsdesktop and that horrible mess of possible geo file formats :-).

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huge tiff files fail Empty Re: huge tiff files fail

Post  orux on Fri Aug 05, 2011 7:11 pm

michi wrote:i cant really upload those failing map monsters... they're all around 1-4GB in size and my upstream is way too slow. if you're interested in working with big files, i could snailmail you a harddisk.

however... i still think that making oruxmaps work with RMAP would be preferable to spending more time and brainpower on oruxmapsdesktop and that horrible mess of possible geo file formats :-).

https://oruxmaps.forumotion.com/t602-sqlite-db-map-viewer-for-pc#5880

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