aaigrid display problem

[Frank Warmerdam]

Dejan Gambin wrote:
> Hi,
> 
>  
> 
> I have successfully clasified the dana in .asc file and it is looking 
> good. I am just seeing some lack in performance so I would just like to 
> know if there are some performance tips I can use, similar to other 
> raster performance techniques (tiling, tileindexes, overviews)?

Dejan,

Convert it to GeoTIFF!

Seriously, ascii grid files are an interchange format, not a working format.
It is surprisingly expensive (from a performance point of view) to parse
big ascii files and convert all those numbers into internal binary form.

   gdal_translate your.asc your.tif

If the dataset is large, tiling and overviews (as normal) may be helpful.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | President OSGeo, http://osgeo.org