I had a similar issue with my nodata values on a particular geotiff
set. I think I ended up setting -dstalpha to make it transparent. Not
sure this would work for your case but worth a shot...
On Oct 6, 2009, at 6:35 PM, Adam Ratcliffe <[email protected]
> wrote:
I ran into a problem when warping my merged SRTM data that the
output image was greater than the 4GB GeoTIFF file size limit. To
overcome this problem I generated 2 output images, one for the North
Island of New Zealand and the other for the South Island. I did
this using the -te option to gdalwarp to specify the extents of the
output file, color relief and hillshade images were generated from
these warped images.
Problem is I'm seeing a dark band where the 2 sets of images meet,
this can be seen in this screenshot: http://test.geosmart.co.nz/images/map-border.png
Looking at the hillshade image there appears to be a black 1px
border around the image.
Could this be the source of the problem? Has anybody else seen and
found a resolution for the issue?
Cheers
Adam Ratcliffe
Software Developer
GeoSmart
PO Box 101001
29 Apollo Drive, Mairangi Bay, Auckland, NZ
Ph: +64 9 9668757 Fx: +64 9 966 8721
Email: [email protected]
Web: www.GeoSmart.co.nz
SmartNAV - The premier Car Navigation dataset for NZ
SmartFIND - Web and Mobile mapping solutions by GeoSmart
www.aamaps.co.nz - For FREE web maps and directions within NZ
Route2GO - Optimised journey planning to create the most efficient
routes to your customers for your sales or service calls
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