[GRASS-dev] r.pi.grow addon explanation

[Paulo van Breugel]

Hi Martin,

Thanks for the explanation. Sounds similar to what r.clump does. Would it 
be an idea to add your explanation to the help file, for the next one that 
stumbles upon it?

Cheers,

Paulo

On July 15, 2021 9:39:45 PM Martin Wegmann 
<martin.wegmann at uni-wuerzburg.de> wrote:
> Hi Paulo,
> the r.pi.grow is mainly just a helper function to define connected patches. 
> It is not meant to be executed independently.
> All pixel that are connected (either 4 or 8 cell neighborhoods) are defined 
> as one patch (with unique ID) and used in subsequent functions like 
> r.pi.index, r.pi.odc etc.
> hope that helps. regards, Martin
> On 15.07.21 18:09, Markus Neteler wrote:
>> Hi Paulo,
>>
>>
>> Paulo van Breugel <p.vanbreugel at gmail.com> schrieb am Do., 15. Juli 2021, 
>> 18:00:
>>
>> Hi devs,
>>
>>
>> I am interesting to try out the different functions provided by the r.pi.* 
>> toolset. For r.pi.grow the manual page is mostly empty. Is there any basic 
>> information available about the options / different input parameters? If 
>> somebody can provide me with some basics, I can try do draft some text and 
>> examples for the manual page.
>>
>>
>>
>>
>> I'm afraid not too much besides the original paper:
>>
>>
>> https://doi.org/10.1111/2041-210X.12827
Thanks Markus, I read the, interesting, paper.
>>
>>
>>
>> Best,
>> Markus
>>
>>
>>
>>
>>
>>
>> Cheers,
>> Paulo
>>
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> --
> Dr. Martin Wegmann
>
> University of Wuerzburg
> Institute of Geography
> Department of Remote Sensing
> Remote Sensing and Biodiversity Research
> Am Hubland
> Oswald Kuelpe Weg 86
> 97074 Wuerzburg, Germany
>
> German Aerospace Center (DLR)
> German Remote Sensing Data Center (DFD)
>
> Phone:  +49-(0)931-31 83446
> Email:  martin.wegmann at uni-wuerzburg.de
>
> url: https://www.geographie.uni-wuerzburg.de/en/fernerkundung/startseite/
> url: https://www.dlr.de/eoc

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