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  • 0 posts edited
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  • 34 votes cast
Oct
31
comment What is a good way to retrieve geographic data along with imgs and mp3 files?
Ok, probably the mobile devices can handle a 100MB file as SQLite blob. My problem, as the backend guy, is that I don't want a 'dirty' solution. Currently, I create a json with relative links to mp3 and imgs, and this json, along with them, is zipped and sent to the user. It works, but I don't like it. I was thinking about an elegant format to store and retrieve img/audio/video files to a mobile client (MBTiles sounds elegant, for example)
Oct
14
comment Good algorithm to detect “wrong” features in a vectorial coverage
Sounds promising. Actually, next step of my work was to rasterize the vector data. I thought it would be easier to face this problem using the vector data, but I understand the logic of this solution. I just need to wait the funding to continue with this. Many thanks!
Oct
14
comment Good algorithm to detect “wrong” features in a vectorial coverage
I was not familiar with it, but I'll check the link. Many thanks!
Jun
1
comment What's regular blocking arrangement ? (GDAL)
Yes. I check it every day. I'll answer you before Monday.
May
29
comment What's regular blocking arrangement ? (GDAL)
Your welcome. Just drop me an email: jorgearevalo at libregis.org
May
19
comment GDAL: What is the best way to test if a CPLString is not empty?
absolutely right. Thanks!
May
12
comment qspatialite error compiling Qgis 1.8 (linux debian squeeze)
Hello, did you solve this? I have exactly the same problem...
Jan
18
comment How to add color interpretation for raster bands using GDAL?
I've asked my boss, and I can't publish data :-(. I actually could mix the files with a standalone code, that copies band by band the input files in the output. I'd like to do it with gdal_merge. My poblem is I can't set RGB color interpretation for the output file with gdal_merge.
Jan
16
comment How to add color interpretation for raster bands using GDAL?
Thanks for your tip! I want to merge 3 single band geotiffs in one 3-band geotiff. My problem is the output of gdal_merge is actually empty (pixels = 0). I can't use that output for anything.
Jan
15
comment How to add color interpretation for raster bands using GDAL?
Mmm... thanks for the response. I'm trying those options. Seems than I can't use PHOTOMETRIC=rgb because my datatype is not int. But I'm on it...
Jan
15
comment How to add color interpretation for raster bands using GDAL?
Ok,updated question. I need a color table for first band.
Jan
15
comment How to add color interpretation for raster bands using GDAL?
Mmmm, ok. If I warp them to create north up rasters, I can build the VRT, and add ColorInterp where needed, buy I still get gray, undefined, undefined. I need to create a color table for first band, but I don't know how. I'll update the question.
Jan
15
comment How to add color interpretation for raster bands using GDAL?
I actually did that, but I get "ERROR 6: SetColorTable() not supported for multi-sample TIFF files.". And I get 0 for all pixels. I'm not sure about the meaning of this error.
Jan
15
comment How to add color interpretation for raster bands using GDAL?
No,they all have the same geotransforms,but they're no north-up rasters (rotation parameters are not 0). And gdalbuildvrt does not support rotated geo transforms. I don't want to warp them.
Jan
14
comment How to add color interpretation for raster bands using GDAL?
I tried, but my raster files are rotated...
Dec
7
comment GDAL: C++ API to Convert Text file of Coordinate points to Raster Pixel line?
You're welcome :-)
Sep
11
comment What is the fastest (performance-wise) way to serve PostGIS features?
Thanks! The project was finally cancelled, but I think your solution is a good one.
Aug
29
comment How could I make this PostGIS query run faster?
Not exactly. I wrote the GDAL PostGIS Raster driver, and helped with PostGIS Raster extension (did some functions, mostly related with GDAL). I know the raster-polygon intersection implies the polygonization of the raster previous to intersection. That could be a heavy process. I don't know if there's some PostgreSQL specific thing I can do to make it faster without changing PostGIS Raster internals.
Aug
15
comment How to put zipcodes data onto a web map?
Too long to generate the tile cache.
Aug
15
comment Why does gdalbuildvrt not allow these things?
Thanks for the suggestion!