Opened 16 years ago

Closed 16 years ago

#2560 closed defect (fixed)

gdal_proximity fails if output band is Byte

Reported by: warmerdam Owned by: warmerdam
Priority: normal Milestone: 1.6.0
Component: Utilities Version: svn-trunk
Severity: normal Keywords: gdal_proximity
Cc: vjetly


The gdal_proximity algorithm fails to produce the right results if the output proximity file has a Byte data type (or likely any unsigned type) for the output band. In particular, the second pass from bottom to top seems to have no effect and proximity to things below is lost (or always set to zero?). small.tif out.tif -ot Byte

Note that the out.tif is all zeros but it should have increasing proximities from the middle up as the bottom of the source image is non-zero.

Attachments (1)

small.tif (1.6 KB ) - added by warmerdam 16 years ago.
input file with data in bottom half.

Download all attachments as: .zip

Change History (3)

by warmerdam, 16 years ago

Attachment: small.tif added

input file with data in bottom half.

comment:1 by warmerdam, 16 years ago

Status: newassigned

comment:2 by warmerdam, 16 years ago

Resolution: fixed
Status: assignedclosed

The algorithm has been modified to create a temporary file for the working proximity information if the output proximity data type is unsigned (r15576).

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