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Hi, How can we vectorize multiple for loops? E.g. how do you vectorize this: for (i in 1:10){ for(j in 1:25){ for(k in 1:19){ x[i,j,k]=i*k-j } } } THanks ------------ KC
Hi, Using the package lpSolve API, I need to build a 2000*100000 constraint matrix. I wonder which method is faster: (a) model = make.lp(0,0) add.constraint(model, ...) or (b) model = make.lp(2000,100000) set.constraint(model...
Hi, I am writing a function which requires user to enter a single character. Something like: hello<-function(){ input<-scan(n=1,what="a") if(input=="h")cat("Hello") # What goes after the 'if' is completely arbitrary, for simplicity sake...
Dear all, When I coerce a vector into a multi dimensional array, I would like R to start filling the array along the last dimension, then the 2nd last etc. Let's jump straight into an example. x <- 1 : 24...
Thanks! that's what I need. ------------ KC ^_^ On 25/11/2010, at 6:45 AM, Greg Snow wrote: > This is a user interface issue. The standard command line user interfaces all wait for the user to hit enter before sending...
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