Moritz Lennert a écrit :
On 11/05/09 09:51, Quentin Page wrote:
hi
I try to create a mask for the pixels which have been misfiled. For
this I made a mapcal with the pixels of the original image are equal
0, but when I have relaunched a classification, the result is 2
classes (pixel to zero and others).
I personally do not really understand the question (but maybe I'm just
dense), so maybe you should reformulate it more clearly. Start by
giving us your entire workflow with the commands you use and the
(unexpected) result.
Moritz
hi Moritz
thank you for your answers
my workflow are
r.mapcalc
"mask246clas6...@ventoux_sud_quentin=if((classif6groupin...@ventoux_sud_quentin==4||classif6groupin...@ventoux_sud_quentin==5),red246...@ventoux_sud_quentin,0)"
r.mapcalc "mask246clas6gr...@ventoux_sud_quentin=if((classif6groupin...@ventoux_sud_quentin==4||classif6groupin...@ventoux_sud_quentin==5),green246...@ventoux_sud_quentin,0)"
r.mapcalc "mask246clas6b...@ventoux_sud_quentin=if((classif6groupin...@ventoux_sud_quentin==4||classif6groupin...@ventoux_sud_quentin==5),bleue246...@ventoux_sud_quentin,0)"
after
i.group
input=mask246clas6...@ventoux_sud_quentin,mask246autoclas6gr...@ventoux_sud_quentin,mask246autoclas6bl...@ventoux_sud_quentin
group=246groupstep2 subgroup=246subgroupstep2
i.cluster group=246groupstep2 subgroup=246subgroupstep2 classes=4
sigfile=sigClassifstep2classe3
i.maxlik group=246groupstep2 subgroup=246subgroupstep2
sigfile=sigClassifstep2classe3 Classifgrou246etape2IN
reject=Classifgroup246etape2REJECT
the resulte is 2 classes
1 class the pixel which was classes 4 or 5 in the last classification
2 the others
I found a method for classifed the pixels which were classified incorrectly in
the last version.
thank a lot
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