[GRASS-user] tgrass: cumulative animation

[Veronica Andreo]

Hi Martin,

I'm not sure I understand what you intend to do. If you want to add the
values of each map to the predecesor (with some conditions), then yes,
you'll get new maps and you should go for t.rast.accumulate (in tgrass) or
r.series.accumulate.

However, if you only want to visualize the overlap... what about setting
transparency to the strds (or list of maps) in g.gui.animation?

cheers,
Vero

2017-09-08 15:39 GMT+02:00 Martin Landa <landa.martin at gmail.com>:

> Hi,
>
> I wonder how to easily create cumulative data layers animation. I have
> raster time spatial dataset with few maps. Each map contains one value
> (and NULL values). Pixels with non-data value do not overlaps in
> strds.
>
> I would like to create animation (ideally by g.gui.animation) showing
> cumulative display. So:
>
> 1 frame shows first map
> 2 frame shows overlapped first and second map from strds
> ...
>
> Is there any way how to create such animation without creating new strds?
>
> And which tool could create such cumulative strds? I checked
> t.rast.accumulate, but till now without success.
>
> Thanks for any pointers, Ma
>
> --
> Martin Landa
> http://geo.fsv.cvut.cz/gwiki/Landa
> http://gismentors.cz/mentors/landa
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