[GRASS-user] temporal mapcalc 3hour precipitation to hourly

[maning sambale]

Thanks Moritz.

I renamed all my maps and its working now.

On Tue, Dec 2, 2014 at 8:59 PM, Moritz Lennert
<mlennert at club.worldonline.be> wrote:
> On 02/12/14 13:30, maning sambale wrote:
>>
>> Hi,
>>
>> A have a temporal raster of 3hourly_rainrate.
>>>
>>> t.rast.list input=3hr_rainrate
>>
>> name|mapset|start_time|end_time
>> 3hr_rainrate_2014-11-13_0300|PERMANENT|2014-11-13 03:00:00|2014-11-13
>> 06:00:00
>> 3hr_rainrate_2014-11-13_0600|PERMANENT|2014-11-13 06:00:00|2014-11-13
>> 09:00:00
>>
>> The values are the average hourly rainfall at 3hr snapshot.  I want to
>> get the total rainfall which is (raster * 3).  Using t.rast.mapcalc, I
>> get this error:
>>
>>> t.rast.mapcalc input=3hr_rainrate output=hourly_rainrate
>>> basename=hourly_rainrate expression="(3hr_rainrate) * (3.0)" nprocs=4
>>
>> Start temporal sampling
>> Start mapcalc computation
>> Invalid map <3hr_rainrate_2014>
>> Invalid map <13_0300>
>> Parse error
>> ERROR: parse error
>> ...
>> ERROR: parse error
>> Invalid map <3hr_rainrate_2014>
>> Invalid map <13_1200>
>> Parse error
>> ERROR: parse error
>> ERROR: Error while mapcalc computation
>>
>> I'm using GRASS 7.0.0.  Thanks!
>
>
> AFAIK, r.mapcalc has difficulties dealing with map names that contain a dash
> in the name as it interprets it as a minus sign.
>
> Try renaming your maps.
>
> Moritz



-- 
cheers,
maning
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