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

Nikos Alexandris nik at nikosalexandris.net
Sun Aug 26 04:16:41 PDT 2018

* Veronica Andreo <veroandreo at gmail.com> [2018-08-25 18:17:51 +0200]:

>Hi devs,
>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.
>Here an example:
>for i in `seq 1 6` ; do r.mapcalc expression="map${i} = ${i}" ; done
>r.info map1 <<-- CELL
>r.series input=`g.list rast pat=map* sep=,` method=minimum output=test_min
>r.info test_min <<-- DCELL
>Is this an expected behaviour?


just guessing,

maybe it's similar to my question about 'count' in `r.stats.zonal` [0]:
use of DCELL allows for integers larger than CELL (32-bit).


[0] https://lists.osgeo.org/pipermail/grass-dev/2018-August/089197.html
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