I forgot: If there is someone who can help me adjust this analysis to
analyze imagery data, please contact me. I know almost nothing on
analysis of such data but it seems it could be useful for it.
Jarosław Jasiewicz pisze:
Hi list!
I added new module r.fuzzy.system to svn repository:
this is standalone classification module, to work require only sets
and rules definition (see module description and small tutorial in
description.html)
what module do (internally):
- parse sets and rules text files before calculation
- creates fuzzy sets based on user's definition
- implicate fuzzy rules form antecedents to consequent based on user
rules
- aggregate consequents
- defuzzify final set
additional features:
- output fuzzy maps for particular rules
- output consequents and aggregated fuzzy set for particular cells
(without map calculation)
In spite that module has the same name as that created by Francois
Declaux, it is completely new tools without any references to that
except it was created for that same reasons. Module r.fuzzy system do
not require r.fuzzy and r.fuzzy.logic to work, but these modules can
be used to trace intermediate results (they use the same fuzzy
algorithms)
It fact module do almost all what I assumed, but there are probably
lot of bugs and errors. Because it was rather difficult coding
(especially text file and expression parser) any help with testing
will be appreciated. I will also appreciate if someone with better
English than mine can help me write tutorial on fuzzy logic in GIS
Known issues:
If there are cells for which membership in all sets is 0 module
returns null. It is probably difficult to solve without extensive
graphical UI with additional correction and check-out tools so
probably will remain unsolved.
regards
Jarek Jasiewicz
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