Displaying 2 results from an estimated 2 matches for "class04".
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class02
2004 May 15
1
Fwd: filter out many data.frames
...of a data-mining result?
How i have to declare X because in every loop step it have another lengths ?
X <- numeric(length(i1,...,i64)) ?
Many thanks
Christian
tres <- function(data.frame) {
+ data <- expand.grid(class02 = c("A","B","C","D"), class04 =
c("A","B","C","D"),PREDICT = c("A","B","C","D"))
+ for (i in 1:nrow(data)){
+ X[i]<- dtree[dtree$class02 == paste(data$class02[i]) & dtree$class04 ==
paste(data$class04[i]) & dtree$PREDICT==paste(da...
2004 May 18
1
list & calculaton in many df subsets
...ariables in the 64 subset's.
Example:
I want calculate difference of two variables inside every
of the 64 subset data.frames and getting this value in tList!
Many thanks,
Christian
tasign <- paste("tList[[n]] <- try(dtree[dtree$class02 ==
paste(data$class02[n]) & dtree$class04 == paste(data$class04[n]) &
dtree$PREDICT==paste(data$PREDICT[n]),])")
tasign <- parse(text=tasign)[[1]]
for(n in 1:nrow(data)) {
TAsign <- do.call("substitute",list(tasign,list(n=n,X=as.name(n))))
eval(TAsign)
}