[Geoserver-devel] [jira] (GEOS-6897) DDS/BIL response format gives erroneous output

GeoServer GeoServer Developer
1

Juha Hyvärinen created an issue

GeoServer / BugGEOS-6897

DDS/BIL response format gives erroneous output

Issue Type:

BugBug

Assignee:

Andrea Aime

Attachments:

erroneous_result.png, expected_result.png

Components:

WMS

Created:

20/Feb/15 6:48 AM

Environment:

Ubuntu 14.04 with OpenJDK7 and JAI extensions. GeoServer build from master branch based on commit: 1b49762967414b546db2f33881d4f61b6218e0e9

Priority:

MajorMajor

Reporter:

Juha Hyvärinen

As an input data I’m using self generated 32bit float GeoTIFF file from Southern Finland.

When data is requested using basicly any other WMS format than application/bil all works as intended.

In BIL response something strange happens when asked resolution aproaches source data resolution in the selected area.
With my test data critical resolution seems to be 195x195. All requests made with that or higher resolution results incorrect response.
Resolutions below 195x195 works fine.

To clarify problem I encoded BIL response to png file and it’s attached as erroneous_result.png

Steps to reproduce problem:

  1. Add DDS/BIL community module to Geoserver
  2. Download source geotiff from: http://dev.cyberlightning.com/~jhyvarinen/dds/2m_tiff.tiff (sorry for large file)
  3. Add it to Geoserver and configure BIL output
  4. Make request using application/bil32 output format

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