[Qgis-developer] ESA Summer of Code In Space

[Andreas Neumann]

>> Support of resampling methods for the display of the raster data
>> (bilinear,cubic,cubicspline,lanczos). Gdal supports these, but QGIS 
>> does not
>> use them.
>>
>> QGIS currently only supports nearest, as far as I know, which 
>> results in
>> very ugly display. It is the main reason I am still also using UMN 
>> mapserver
>> next to QGIS server.
>
>  Ugly? Interpolation of rasters at low resolution looks even more 
> ugly
> to me. At least the 'nearest' algorithm, showing grid cells as cells,
> is honest to the data, unlike interpolation algorithms which don't
> have statistical weight behind them.... Anyway, your mileage may vary
> :)

 it really depends on the nature of the raster. color-table based 
 rasters or 1bit rasters cannot be resampled of course - but the display 
 quality of scanned rgb maps, aerial images or 8bit grayscale maps would 
 benefit.

 Andreas

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 Andreas Neumann
 Böschacherstrasse 10A
 8624 Grüt (Gossau ZH)
 Switzerland