Kevin,
By default, many functions only *return* a result, they don't explicitly
*print* it. There is no difference in interactive mode, but there is in
batch mode (e.g., in loops). Use print() or cat() for explicit printing
to console.
for(i in 1:100)
{
cat(i,"\n")
}
HTH,
Stephan
[EMAIL PROTECTED] schrieb:
I have a command that reads in some data:
x <- read.csv("Sales2007.dat", header=TRUE)
Then I try to organize the data:
sc <- split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to run
on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here. Why
desn't the loop seem to output anyything?
Thank you.
Kevin
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and provide commented, minimal, self-contained, reproducible code.
