[GRASS-user] temporal raster accumulation

[Markus Neteler]

Hi Ivan,

In addition, see also

https://grasswiki.osgeo.org/wiki/Temporal_data_processing#Aggregation_of_seasonal_data_using_time_ranges

best,
Markus

On Tue, Aug 9, 2022 at 11:40 AM Stefan Blumentrath
<Stefan.Blumentrath at nina.no> wrote:
>
> Hi Ivan,
>
> A simple, quick-and-dirty approach could be:
> t.rast.algebra basename=rain5 expression="rain5=rain + rain[-1] + rain[-2] + rain[-3] + rain[-4] + rain[-5]"
>
> Temporal selection (start_date(rain)...) is probably more elegant...
>
> See:
> https://grass.osgeo.org/grass78/manuals/t.rast.algebra.html
>
> Cheers
> Stefan
>
> -----Original Message-----
> From: grass-user <grass-user-bounces at lists.osgeo.org> On Behalf Of Ivan Marchesini
> Sent: tirsdag 9. august 2022 09:45
> To: GRASS user list <grass-user at lists.osgeo.org>
> Subject: [GRASS-user] temporal raster accumulation
>
> Dear GRASS users
>
> I'm a little bit confused about which can be the best module/tool to perform the following task I have a strd having a daily granularity. It contains total daily cumulated rainfall.
>
> I would like to create a new strd where, for each day, I have the cumulated rainfall in the antecedent 5 days
>
> can you kindly suggest which is the best tool (or combination of tools) to reach this aim?
>
> thank you very much
>
> Ivan