That was a typo.
It should have read:
results[results$one < 100,]
It does still fail.
There is ONE column that is text. So my guess is that R is seeing that
and assuming that the entire data.frame should be factors.
-N
On 11/10/10 11:16 PM, Michael Bedward wrote:
Hello Noah,
If you set these names...
names(results)<- c("one", "two", "three")
this won't work...
results[results$c< 100,]
because you don't have a column called "c" (unless that's just a typo
in your post).
I tried making it a data.frame with
foo<- data.frame(results)
But that converted all the numeric values to factors!!!
Not sure what's going on there. If 'results' is a numeric matrix you
should get a data.frame with numeric cols since under the hood this is
just calling the as.data.frame function.
Michael
On 11 November 2010 16:02, Noah Silverman<n...@smartmediacorp.com> wrote:
Hi,
I have a process in R that produces a lot of output. My plan was to build
up a matrix or data.frame "row by row", so that I'll have a nice object with
all the resulting data.
I started with:
results<- matrix(ncol=3)
names(results)<- c("one", "two", "three")
Then, when looping through the data:
results<- rbind(results, c(a,b,c))
This seems to work fine. BUT, my problem arises when I want to filter, sort,
etc.
I tried (thinking like a data.frame):
results[results$c< 100,]
But that fails.
I tried making it a data.frame with
foo<- data.frame(results)
But that converted all the numeric values to factors!!! Which causes a
whole mess of problems.
Any ideas??
-N
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