[OSM-dev] Options for displaying a large GeoTIFF in JOSM

Paul Norman penorman at mac.com
Sat Mar 12 07:23:24 GMT 2011


> From: Frederik Ramm [mailto:frederik at remote.org]
> > Paul,
> 
> Paul Norman wrote:
> > My second method for imagery is to use mapserver to serve it up as a
> > WMS layer. That didn't work, mapserver never responded when trying to
> > handle such a large file. I think it just took too long to process
> > anything with it.
> 
> I have no first-hand experience with such large images in Mapserver but
> just to be sure - you do know about the overview pyramids one uses with
> such images (http://mapserver.org/input/raster.html#rasters-and-tile-
> indexing,
> http://www.gdal.org/gdaladdo.html)?
> 

I wasn't aware of that, thanks. I'm running gdal_retile (with a size of
4096x4096 px per tile) now on my windows box, while the Ubuntu box is
running gdal_translate -co TILED=YES, and when they're both done I'm going
to compare performance with MapServer




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