13 Jul
2009
13 Jul
'09
12:29 p.m.
- write a little utility to paste GeoTIFF files together
gdal tools should be able to do this.
Yes, the GDAL tools are able to do this, I have to do it this way for elevation lines for mapnik rendering. I wrote code to do this to render USGS DRGs, and while the code is not polished, I did release it. The library libdrg has a procedure to return a row of data, and will choose the right scale (among 1:25K 1:100K 1:250K DRGs) and then grab pixels from adjoining maps as appropriate. You'd have to create input files (easy if the tiffs are already set up nicely - there's a lot of hair for grabbing square lat/lon blocks out of UTM-referenced tiffs). So this may not be all that useful. Bits are at http://www.lexort.com/software/