Opened 16 years ago

Closed 16 years ago

#2598 closed defect (fixed)

[PATCH] GDAL ignores the HeaderOffset attribute in .ers files

Reported by: agf Owned by: warmerdam
Priority: normal Milestone: 1.5.3
Component: GDAL_Raster Version: unspecified
Severity: normal Keywords: ers
Cc:

Description

GDAL presently ignores the HeaderOffset field in ers files and therefore interprets a binary header as data.

This patch implements the solution described on the mailing list: ​http://lists.osgeo.org/pipermail/gdal-dev/2008-July/017587.html

This seems to work, though I've not done much testing (see test.cc).

An example .ers file using the HeaderOffset attribute is attached (dem and dem.ers: this is a digital elevation model of an island, ocean is represented as -9999).

Patch is against release 1.5.2 of GDAL, but should apply to trunk too.

Attachments (4)

ers-headerOffset.patch​ (1.6 KB ) - added by agf 16 years ago.
dem.ers​ (783 bytes ) - added by agf 16 years ago.
dem​ (4.7 KB ) - added by agf 16 years ago.
test.cc​ (1.3 KB ) - added by agf 16 years ago.

Download all attachments as: .zip

Change History (5)

by agf, 16 years ago

Attachment: ers-headerOffset.patch​ added

by agf, 16 years ago

Attachment: dem.ers​ added

by agf, 16 years ago

Attachment: dem​ added

by agf, 16 years ago

Attachment: test.cc​ added

comment:1 by warmerdam, 16 years ago

Component: default → GDAL_Raster
Keywords: ers added
Milestone: → 1.5.3
Resolution: → fixed
Status: new → closed

Slightly modified patch applied in trunk (r15466) and 1.5 branch (r15468). The test suite was also updated to test this case (r15467).

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