[GRASS-user] temporal raster accumulation

[Stefan Blumentrath]

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





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