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| Image Serving & GIS Developing and serving World Wind content; other GIS issues. |
Topic Review (Newest First)
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| 04-24-2008 02:31 AM | ||
| what_nick |
Hi, Here is the doc: --srcProj is used to specify projection for files without one e.g .tif/.tfw set, use the epsg code, e.g. epsg:32754 is UTM Zone 54S , epsg:4326 is WGS84. Regards, what_nick. |
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| 04-23-2008 12:45 PM | ||
| nlneilson |
Quote:
The only documentation I have is "Dstile howto", please post a link or information where other documentation can be found. 1) --srcProj ??? where is there info on this, I did not find this in the "howto" 2) pct2rgb - I got this FWTools command working but " revive the in-WorldWind tiler ie DSTileGUI." I did not use that in WW.net and am making tiles that can be used in WWJ also. I have not found any GUI for DSTile but the download did include DsTileQtGUI but what that does is not clear, I could not get it to open. You have done a very good job on dstile but documentation on how it is to be used is needed. FWTools - GDAL - is in Python, have you considered porting dstile to Python also? |
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| 04-23-2008 02:24 AM | ||
| what_nick |
I better pitch in: 1) --srcProj options takes in an EPSG code for example UTM zone 54S is epsg:32754. 2) pct2rgb is one command so well if you are uncomfortable with command chaining please revive the in-WorldWind tiler ie DSTileGUI. 3) I see sometime ago someone was tiling an image over the Murray(shameless plug - contact http://www.apogee.com.au directly we are local and we code WorldWind) consider using the srcProj option. 4) As long as GDAL was built with Zip support LZW works fine, since tiles are returned from calls to GDAL API and decompression works seamlessly, performance might be slightly hit - just as is the case if you use PNG output option. Feel free to contact me for more pointers or mod suggestions to dstile. Cheers, what_nick. |
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| 04-22-2008 09:31 AM | ||
| nlneilson |
Here is one way a file can be clipped in FWTools. gdal_translate.exe -srcwin 1100 20 9840.0 4020.0 in_file out_file The first and second numbers are the x and y offset in pixels from the upper left corner and the third and fourth are the x and y size of the out_file. The offset plus size cannot be bigger than that of the in_file. |
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| 04-22-2008 06:20 AM | ||
| nlneilson |
Having problems clipping a file. Following the "Dstile howto" Code:
from >gdalinfo "Los Angeles 82 North rgb".tif Upper Left ( -346872.964, 278108.403) (122d22'56.62"W, 36d36'48.05"N) Lower Left ( -346872.964, 13381.284) (122d16'4.37"W, 34d13'36.74"N) Upper Right ( 355301.523, 278108.403) (114d31'24.14"W, 36d36'37.02"N) Lower Right ( 355301.523, 13381.284) (114d38'26.37"W, 34d13'26.03"N) Center ( 4214.279, 145744.843) (118d27'12.65"W, 35d28'53.50"N) gdal_translate.exe -projwin -121.51 36.06 -114.60 34.28 "Los Angeles 82 North rgb".tif "Los Angeles 82 North rgb clipped".tif Input file size is 11005, 4149 Computed -srcwin 5434 4358 0 0 from projected window. Computed -srcwin falls outside raster size of 11005x4149. Changing the lat-lon even farther into the bounds gives a similar error, any suggestions? |
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| 04-21-2008 09:52 PM | ||
| Matt Fox | By the way, I know a little late, but the OP may want to check and see if TIF file uses LZW or some other compression. That might throw dstile off. | |
| 04-19-2008 02:24 AM | ||
| nlneilson |
dstile color? Quote:
http://www.worldwindcentral.com/wiki...uired_Software dstile seems to work OK except the output files are just greyscale, no color. pct2rgb works OK without these args but what are they for? [-of format] [-b <band>] Usage: pct2rgb.py [-of format] [-b <band>] source_file dest_file Has some one made a batch file to "pct2rgb->dstile" for all the files in a directory? |
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| 01-16-2007 04:23 AM | ||
| Holywhippet |
This is what gdalinfo said about the file in question: C:\Frogtech Output>gdalinfo Murray_1VDup100m_RTP_Z54.tif Driver: GTiff/GeoTIFF Size is 4281, 4664 Coordinate System is `' Origin = (494134.313669923460000,6464678.16157053 6000000) Pixel Size = (79.999995261709273,-79.999995261709273) Metadata: AREA_OR_POINT=Area Image Structure Metadata: COMPRESSION=PACKBITS Corner Coordinates: Upper Left ( 494134.314, 6464678.162) Lower Left ( 494134.314, 6091558.184) Upper Right ( 836614.293, 6464678.162) Lower Right ( 836614.293, 6091558.184) Center ( 665374.304, 6278118.173) Band 1 Block=4281x1 Type=Byte, ColorInterp=Red Overviews: 1068x1164, 533x581, 265x289, 131x143, 64x70, 31x34 Band 2 Block=4281x1 Type=Byte, ColorInterp=Green Overviews: 1068x1164, 533x581, 265x289, 131x143, 64x70, 31x34 Band 3 Block=4281x1 Type=Byte, ColorInterp=Blue Overviews: 1068x1164, 533x581, 265x289, 131x143, 64x70, 31x34 This didn't help either: C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 5.625 --wwcache --overviews murray Murray_1VDup100m_RTP_Z54.tif --srcProj Murray_1VDup100m_RTP_Z54.tif.xml lztsd set to 5.625000 Tile Mode set to WW Cache : |
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| 01-14-2007 11:20 PM | ||
| Holywhippet | For the files I use, the projection is generally in a second file - either a .prj or a .xml. | |
| 01-12-2007 10:53 PM | ||
| withak |
Quote:
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