Opened 15 years ago
Closed 15 years ago
#3103 closed defect (wontfix)
gdal_contour border problem
| Reported by: | sbrunner | Owned by: | warmerdam |
|---|---|---|---|
| Priority: | normal | Milestone: | |
| Component: | Utilities | Version: | 1.6.1 |
| Severity: | normal | Keywords: | contour |
| Cc: | courriel@… |
Description
Hello,
I generate a map with the contour generated by gdal_contour there http://map.stephane-brunner.ch/?zoom=15&lat=46&lon=7&layers=B000000FFFFFFFFFF0F.
But as we can see the junction between SRTM tiles don't work a well as it should be possible.
It seen that there one point on each line end who shouldn't be necessary.
Than is it possible to remove it ?
CU and thanks for all ;-)
Stéphane
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Stéphane,
On that server it is hard for me to see what is going on exactly. The contour algorithm produces lines right up to the raster edge, but I think SRTM tiles have one overlapping pixel.
For your case I think it would be ideal if a vector mask could be applied to clip off the last half pixel width of vector data but there is no way to do that with OGR without writing a script.
I do not think it would be appropriate for most use of gdal_contour to omit the last half pixel of vectors.