[GRASS-user] Re: Calculating standard error of many maps?

Rainer M Krug r.m.krug at gmail.com
Mon Feb 9 11:14:05 EST 2009


Hi Martin

On Mon, Feb 9, 2009 at 6:12 PM, Martin Wegmann
<martin.wegmann at uni-wuerzburg.de> wrote:
> hello Rainer,
>
> just look at r.series.

That is exactly what I was looking for.

Thanks a lot

Rainer

>
> If the naming of the files is similar you can try something like:
>
> r.series input="`g.mlist pattern='insitu_data.*' sep=,`"
> output=insitu_data.stddev method=stddev
>
> regards, Martin
>
>
> On Montag, 9. Februar 2009 16:59:33 Rainer M Krug wrote:
>> Just one clarification: I would like to calculate these descriptive
>> stats for each cell, to obtain "variability maps".
>>
>> Rainer
>>
>> On Mon, Feb 9, 2009 at 5:57 PM, Rainer M Krug <r.m.krug at gmail.com> wrote:
>> > Hi
>> >
>> > I have 25000 maps, generated by simulation predictions, and I would
>> > like to calculate some descriptive stats, like mean, standard
>> > deviation, median, quartiles.
>> >
>> > Is there an easy way of doing this in GRASS?
>> >
>> > Thanks,
>> >
>> > Rainer
>> >
>> >
>> > --
>> > Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
>> > Biology, UCT), Dipl. Phys. (Germany)
>> >
>> > Centre of Excellence for Invasion Biology
>> > Faculty of Science
>> > Natural Sciences Building
>> > Private Bag X1
>> > University of Stellenbosch
>> > Matieland 7602
>> > South Africa
>
>
>
> --
> **********************************************************************
>
> University of Wuerzburg
> Institute of Geography
> Department of Remote Sensing
> Remote Sensing and Biodiversity Unit
> Am Hubland
> 97074 Wuerzburg, Germany
> @
> German Aerospace Center (DLR)
> German Remote Sensing Data Center (DFD)
>
> Phone:  +49-(0)931-888-4797
> Fax:    +49-(0)931-888-4961
> Email:  martin.wegmann at uni-wuerzburg.de
> url: http://www.remote-sensing.uni-wuerzburg.de
>
> **********************************************************************
>



-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Faculty of Science
Natural Sciences Building
Private Bag X1
University of Stellenbosch
Matieland 7602
South Africa


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