[Mapguide-trac] [mapguide-trac] #2174: GDAL - MapImage with stripes

[MapGuide Open Source]

#2174: GDAL - MapImage with stripes
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   Reporter:  zspitzer           |       Owner:       
       Type:  defect             |      Status:  new  
   Priority:  high               |   Milestone:       
  Component:  Rendering Service  |     Version:  2.4.0
   Severity:  major              |    Keywords:       
External_id:                     |  
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 I'm trying to produce large high quality plots with the GetMapImage-
 methode.
 When using the GDAL Raster Provider I get stripes on my image. Source
 files
 are either 8 bit or 24 bit. It doesn't matter if it is a raster
 FeatureSource of type 'single' or 'composite'. I've tested with different
 raster output formats (PNG/PNG8/JPG) but get always the same result like
 in
 this image:

 You can test it with the  TrueMarble
 http://129.123.16.127/globe/TrueMarble_GeoTIFF/TrueMarble.8km.5400x2700.tif.gz
 dataset.


 Then create FeatureSource, LayerDefinition and MapDefinition and call the
 GetMapImage method on MapAgent Test Pages pointing to your MapDefinition.
 And you can see ...

 http://osgeo-org.1560.n6.nabble.com/file/n5016550/italy.png


 With the following settings I get the above image:

 Format: PNG

 View Center X: 0
 View Center Y: 0
 ViewScale: 10000000

 Display Dpi: 75
 Display width: 4000
 Display height: 4000

 (don't forget to adjust the raster settings in serverconfig.ini to allow
 such high resolution output for GDAL Provider)

 Discussion: http://osgeo-org.1560.n6.nabble.com/GDAL-MapImage-with-
 stripes-td5016254.html#a5016599

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/2174>
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