Opened 8 years ago
Last modified 5 years ago
#6395 closed defect
Artefacts appears on resampled Tiff DTED after performing an slope analysis — at Initial Version
| Reported by: | poulet1212 | Owned by: | warmerdam |
|---|---|---|---|
| Priority: | normal | Milestone: | closed_because_of_github_migration |
| Component: | GDAL_Raster | Version: | 1.11.3 |
| Severity: | normal | Keywords: | |
| Cc: |
Description
As input file I use a single band 32 Float geotif file with elevation data. I reproject it using gdalwarp like: gdalwarp -ot Float32 -co "tfw=yes" -dstnodata 0 -s_srs EPSG:21781 -t_srs EPSG:4326 src dest
The result seem to be good as first glance, but problems appear as i perform a slope analysis on another software (either arcmap or QGis). Look the two attached file, one is the analysis on the original data and the other the reprojected data. You can clearly see some artefacts on the image.
The same problem also appears if if resample the data to a bigger cell size.
I use GDAL 1.11.3.
Change History (2)
by , 8 years ago
| Attachment: | slope_analysis_without_artefact.PNG added |
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by , 8 years ago
| Attachment: | slope analysis with artefacts.PNG added |
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