search for: jon_hak

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