Opened 19 years ago
Last modified 14 years ago
#1318 closed defect
SCALE can cause maxvalues to be transparent. — at Initial Version
| Reported by: | Owned by: | warmerdam | |
|---|---|---|---|
| Priority: | high | Milestone: | |
| Component: | GDAL Support | Version: | 4.4 |
| Severity: | normal | Keywords: | |
| Cc: |
Description
In mapdrawgdal.c, the computation for dfScaleRatio on line 1147 can cause pixels with values of "dfScaleMax" to be mapped to 256. If NoDataValue is -1, this causes the pixels to be transparent. Change to dfScaleRatio = 255.0/(dfScaleMax - dfScaleMin);
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