Displaying 3 results from an estimated 3 matches for "jon_hak".
2007 Jun 25
2
manipulate a matrix
I have read everything I can find on how to manipulate a results matrix in R and I have to admit I'm stumped. I have set up a process to extract a dataset from ArcGIS to compute a similarity index (Jaccards) in Vegan. The dataset is fairly simple, but large, and consists of rows = sample area, and columns = elements. I've been able to view the results in R, but I want to get the results
2008 Jul 18
1
manipulate a matrix2
...12,] 2 3 12
[13,] 3 3 13
[14,] 4 3 14
[15,] 5 3 15
[16,] 1 4 16
[17,] 2 4 17
[18,] 3 4 18
[19,] 4 4 19
[20,] 5 4 20
[21,] 1 5 21
[22,] 2 5 22
[23,] 3 5 23
[24,] 4 5 24
[25,] 5 5 25
>
On 6/25/07, Jon Hak <Jon_Hak_at_natureserve.org> wrote:
>
> I have read everything I can find on how to manipulate a results
matrix in
<http://tolstoy.newcastle.edu.au/R/e2/help/07/06/19875.html#19887qlink1>
> R and I have to admit I'm stumped. I have set up a process to extract
a
> dataset from Ar...
2010 Jan 20
0
putting labels back on a matrix.
I did not post this question to the ecology list, even though it is about an analysis using Vegan, since my question is based more on basic data manipulation in R. I think this is a fairly simple question but for the life of me I cannot find a reference for in the archives.
I have an analysis using a matrix in which I needed to strip the ID variable off the input data to run the analysis. Now I