I think this will do what you want:
dframe - read.table(your.text.file, other args as needed )
mat - tapply(dframe[,3],dframe[,1:2],c)
On Fri, 30 Jun 2006, Wade Wall wrote:
I have a text file that I have imported into R. It contains 3 columns and
316940 rows. The first column is
I have a text file that I have imported into R. It contains 3 columns and
316940 rows. The first column is vegetation plot ID, the second species
names and the third is a cover value (numeric). I imported using the
read.table function.
My problem is this. I need to reformat the information
?as.matrix
On Friday 30 June 2006 09:11, Wade Wall wrote:
I have a text file that I have imported into R. It contains 3 columns
and 316940 rows. The first column is vegetation plot ID, the second
species names and the third is a cover value (numeric). I imported using
the read.table
On 6/30/2006 10:11 AM, Wade Wall wrote:
I have a text file that I have imported into R. It contains 3 columns and
316940 rows. The first column is vegetation plot ID, the second species
names and the third is a cover value (numeric). I imported using the
read.table function.
My problem
On Fri, Jun 30, 2006 at 10:11:15AM -0400, Wade Wall wrote:
I have a text file that I have imported into R. It contains 3 columns and
316940 rows. The first column is vegetation plot ID, the second species
names and the third is a cover value (numeric). I imported using the
read.table
Hi Wade,
On 6/30/06, Wade Wall [EMAIL PROTECTED] wrote:
I have a text file that I have imported into R. It contains 3 columns and
316940 rows. The first column is vegetation plot ID, the second species
names and the third is a cover value (numeric). I imported using the
read.table
