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2008 Jan 28
0
Grid search: avoid "for" loops thanks to apply&co?
...low), a schema of the actual code gives: for(in in 1:length(thres1)) firstThresh<-tresh1[i] for(j in 1:length(thres1)) if(j>i) secondThresh<-tresh1[j] regime1<-ifelse(x<thresh1)*x regime2<-ifelse(x>thresh2)*x ...(some matrix algebra in order to obtain the Sum of Squares of cbind(x, regime1, regime2) I'm trying to implement it into R with apply&co instead, but don't succeed. Many packages use grid search but all with "for" loops and small number of values. To u...