[GRASS-dev] r.series method=minimum yields float map when integer maps are used as input

Veronica Andreo veroandreo at gmail.com
Tue Aug 28 04:49:32 PDT 2018

Sorry, I pressed send earlier than intended...

El mar., 28 ago. 2018 a las 13:45, Veronica Andreo (<veroandreo at gmail.com>)

> Thanks for the explanation, Glynn :)
> El mar., 28 ago. 2018 a las 11:01, Glynn Clements (<
> glynn at gclements.plus.com>) escribió:
>> Veronica Andreo wrote:
>> > If I use a series of integer type maps as input to t.rast.series or
>> > r.series and select minimum as method, the output is a floating point
>> map.
>> > I would have thought that if the input are integers then output should
>> be
>> > integer as well. I realized when I made a plot of the map and got a
>> smooth
>> > legend instead of integer numbers.
>> > Is this an expected behaviour?
>> The type of the output map is independent of the inputs, determined
>> solely by the method. The count, diversity, min_raster and max_raster
>> methods generate integer maps; all other methods generate
>> floating-point maps.
>> It probably wouldn't be particularly involved to add another flag to
>> the method table to indicate that a particular method will always
>> produce an integer result for integer inputs.
Is this worth an enhancement ticket? I do not know how to implement any of
this myself.

thanks again,
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