Hello,

Sorry, I forgot to Cc the list.

Rui Barradas
Em 18-06-2013 16:29, Rui Barradas escreveu:
Hello,

Inline.

Em 18-06-2013 15:54, Dzu escreveu:
Dear all,

I need to create a for-loop in which I can compute multiple histograms
My code is the following :
#singlefile includes huge csv file
#I want to specify the binsize
#I would like to compute in the for -loop the histograms


     numfiles <- length(singlefile)
     for (i in 1 :51)
     {
     binsize <- -20 :20/2
     hist(singlefile(singlefile$GVC[singlefile$new_id==i]],
break=seq(), by =
binsize)))

hist() does not have a 'by' argument.
Maybe what you want is something like the following.

binsize <- -20:20/2
h <- vector("list", 51)
for (i in 1:51)
     h[[i]] <- hist(singlefile$GVC[singlefile$new_id==i, ],
break=binsize, plot = FALSE)


This computes the histograms. Now to plot the histograms you use the
plot() function:

plot(h[[1]])  # plots the first



What do I have to do ?
How can I specify the range for i  ?

I don't understand. You want to match several values for i at once?

singlefile$GVC[singlefile$new_id %in% irange, ]


Hope this helps,

Rui Barradas

I am totally lost
Thanks for support
D.U



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