[gdal-dev] Naive warping question

[Eli Adam]

Brian,

     You could try gdalbuildvrt, then gdalwarp that with -of VRT, then tile it how you like with gdal_translate.  I think that gdal_retile.py has some options to do what you want as well.

     I think that the slivers are probably because the projections have different angles of rotations and pixels may not be exactly square in each projection and may not map from one to the other cleanly.  Making a mosiac first (even if virtual) deals with this (or at least pushes it to your edges where you won't notice it.

HTH, Eli

>>> Brian Hamlin <maplabs at light42.com> 12/21/2010 12:13 PM >>>
Hi All-
   I have a series of tiffs, georef'd in 4326, which side by side cover 
 >1000 km at latitude 38
California from the coast past the borders

   I warped them all to 3310 using gdalwarp with default settings..
However, the resulting images appear to leave a sliver between them
In other words, they are *not* complete coverage of the area covered
  in the original tiffs. This is unexpected to me..

Is this expected results?
How can I be sure to get complete coverage in the resulting set of 
re-projected tiffs?

   thanks
    -Brian

==
Brian Hamlin
planetwork.net
OSGeo California Chapter
(415) 717-4462 cell

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