Hello,
This is because myBiomodModelEval_55["ROC","Testing.data",,,] is a
vector not an array or matrix. What the error message is saying is that
dim() is not returning a value (it's length is not positive, since it
cannot be negative length(dim(.)) must be zero). Try it.
Or see the class of those objects.
class(myBiomodModelEval_55["ROC","Testing.data",,,])
class(myBiomodModelEval_55["TSS","Testing.data",,,])
You do not apply(), simply do
mean(myBiomodModelEval_55["ROC","Testing.data",,,])
And the same for sd().
Hope this helps,
Rui Barradas
Em 21-10-2017 01:11, Lara Dutra Silva escreveu:
Hello
I am new in R. I am trying to implement Biomod 2 package.
However, I have a doubt. I want to calculate the mean and sd of
"Testing.data"
(ROC and TSS)
# let's print the ROC scores of all selected models
myBiomodModelEval_55["ROC","Testing.data",,,]
RUN1 RUN2 RUN3 RUN4 RUN5 RUN6 RUN7 RUN8 RUN9 RUN10
0.938 0.938 0.926 0.931 0.939 0.918 0.920 0.914 0.935 0.919
# let's print the TSS scores
myBiomodModelEval_55["TSS","Testing.data",,,]
RUN1 RUN2 RUN3 RUN4 RUN5 RUN6 RUN7 RUN8 RUN9 RUN10
0.746 0.763 0.717 0.758 0.754 0.704 0.700 0.725 0.742 0.721
I try to use "apply"
apply(myBiomodModelEval_55["TSS","Testing.data",,,], 1, mean)
apply(myBiomodModelEval_55["ROC","Testing.data",,,],1, mean)
apply(myBiomodModelEval_55["ROC","Testing.data",,,], 1, sd)
apply(myBiomodModelEval_55["TSS","Testing.data",,,], 1, sd)
I can not figure it out because it runs error.
The problem is in the dimension?
Error in apply(myBiomodModelEval_55["TSS", "Testing.data", , , ], 1, mean) :
dim(X) must have a positive length
How can I solve this?
This is the structure of object
dimnames(myBiomodModelEval_55)
[[1]]
[1] "ROC" "TSS"
[[2]]
[1] "Testing.data" "Cutoff" "Sensitivity" "Specificity"
[[3]]
[1] "GAM"
[[4]]
[1] "RUN1" "RUN2" "RUN3" "RUN4" "RUN5" "RUN6" "RUN7" "RUN8" "RUN9"
[10] "RUN10"
[[5]]
Acacia_AllData
"AllData"
Regards,
Silva
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
