Opened 10 years ago

Last modified 10 years ago

#5497 closed defect

Sporadic repeatable errors in png output of gdaldem -color-relief — at Initial Version

Reported by: YellowBeard Owned by: warmerdam
Priority: normal Milestone:
Component: Algorithms Version: 1.11.0
Severity: major Keywords: color-relief, gdaldem, DEM
Cc:

Description

I have a AIG dataset of Queensland, Australia. In MapWindow, the data looks correct (with the exception of some systematic offset errors near the coast that aren't too serious).

When I run this file through gdaldem -color-relief, the output is almost correct, but with small regions of 'noise' that results in heights of 18,000ft, or -40,000ft, for example.

I am using the gdaldem from http://www.gisinternals.com/sdk/PackageList.aspx?file=release-1600-x64-gdal-1-11-mapserver-6-4.zip

my command is: gdaldem.exe color-relief "e153s29dem1_0\w001001.adf" "colourTextFile.txt" "deme153s29.png" -of PNG

Change History (2)

by YellowBeard, 10 years ago

Attachment: colourTextFile.txt added

Color mapping file

by YellowBeard, 10 years ago

Attachment: gdaldemPngOutputExample.png added

Circled examples of incorrect png colours

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