Dear all,
I'm trying to create a list of point patterns ppp.object {spatstat} in a loop.
My dataset looks like this:
> names(OT1);head(OT1);dim(OT1)
[1] "EID" "latitude" "longitude" "month" "year" "CPUE"
"TSUM"
[8] "fTSUM"
EID latitude longitude month year CPUE TSUM fTSUM
1 167-1-1996-1135 67.70000 -61.81667 9 1996 0 0 F
2 167-10-1996-1135 67.71667 -59.18333 9 1996 0 0 F
3 167-100-1996-1135 67.86667 -59.43333 10 1996 0 0 F
4 167-101-1996-1135 67.95000 -59.58333 10 1996 0 0 F
5 167-102-1996-1135 68.10000 -59.76667 10 1996 0 0 F
6 167-103-1996-1135 67.81667 -59.38333 10 1996 0 0 F
[1] 2707 8
What I would like to do is to select data for each of my month and create a
ppp.object.
> sort(unique(OT1$month))
[1] 7 8 9 10 11 12
The following loop works and I can see each of my figures:
for(i in sort(unique(OT1$month))){
a<-OT1[OT1$month==i,]
b<-ppp(a$longitude,a$latitude,marks=a$fTSUM,window=newW)
plot(b,main=i)
}
How can I access each of my ppp.objects? I've tried adding a list() in the loop
command such that I can access the data but without any success... Any help
would be much appreciated!
Thank you!
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