[GRASS-user] ...|no data problem

Glynn Clements glynn at gclements.plus.com
Wed May 2 09:58:07 EDT 2007

Martin Wegmann wrote:

> I think it is a very simple problem but I don't get it.
> I have a raster which I want to convert to integer but doing so results in 
> areas with null() values.
> When I look at the input raster (r.what) I get areas which look like this:
> -1.59582443346|6.02450629749||927119811.912364006|
> which also look fine in the integer conversion, but other areas give following 
> r.what infos:
> -2.14304204004|6.63535385832||2633784216.1745109558|no data
> these areas results in null() values after integer conversion. 

Note that 2633784216 is too large to be represented as an integer; the
range of integers is -2147483647 to +2147483647 inclusive.

If you have values outside that range, you will need to rescale.

Glynn Clements <glynn at gclements.plus.com>

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