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