[Qgis-developer] Re: Raster providers

[Radim Blazek]

On Mon, Jan 17, 2011 at 10:06 AM, Marco Hugentobler
<marco.hugentobler at sourcepole.ch> > Using NaN sounds like a good idea
and Qt has platform independent support for
> it (qIsNan & co.).
> All other solutions I can think of seem to be more complicated (e.g. force a
> transparency value only if raster is reprojected).
>
>>float + NaN for byte/int?
>
> This is not clear to me. Could you explain your approach for byte/int?

I thought that if data type of the source is integer the provider
could represent them as floating point. Byte can be represented as
integer. Bad solution however.

Radim