hi Marcel

there is not much I can say without a bit more info about your raster data but 
maybe test your data in other gis software like qgis and see if you notice 
similar slow processing.

in cartoweb you can activate the logging (uncomment the line : 
;log4php.rootLogger=DEBUG, A1 in the file 
client_conf/cartoclientLogger.properties, as explained in the documentation 
http://www.cartoweb.org/doc_head/docbook/xhtml/dev.debug.html) in order to get 
a little bit more info about which situation/data is causing the slowdown

maybe consider using ecw (if thats not already the case) for your raster data

regards
Oliver
  ----- Original Message ----- 
  From: Marcel Koller 
  To: [email protected] 
  Sent: Tuesday, November 24, 2009 5:12 PM
  Subject: [Cartoweb-users] problems with raster data


   

   

  Hi list

   

  I do have some troubles when I'm panning or zooming over raster data (never 
with raster data only). Some times (not every time) I get the message 

   

  "Ajax response is no XML, probably a CartoWeb failure. Click OK to show it." 

   

  In the race debugger I get the message "Error: AjaxHandler.actionRequest(): 
received response is malformed!", 

   

  and the browser (Mozilla Firefox 3.0.5) gives me the answer: Fatal error: 
Maximum execution time of 60 seconds exceeded in 
/var/www/mycartowebproject/coreplugins/images/server/ServerImages.php on line 
219.

   

  Some raster data is quite big, bud some isn't (10MB). I do use the indexing 
of the utility gdal and also the overviews of this utility.

   

  Does anybody knows where I could find the error? Astonishingly I don't get 
the error message by every zoom or panning action, but always after the second 
or third panning or zooming action over raster data.

   

  Thanks for your response (hopefully).

   

  Regards

  Marcel

   



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