On Mar 19, 2011, at 5:29 PM, Nicolas Gutierrez wrote:
Hello,
I'm trying to create a matrix (95x55) with data from a data.frame pop:
xloc yloc go ind Ene totW
1 23 20 516 1 0.02 20.21
2 23 20 1143 1 0.02 20.21
3 23 20 250 1 0.02 20.21
4 22 15 251 1 0.02 18.69
5 22 15 598 1 0.02 18.69
6 21 19 250 1 0.02 20.21
7 22 20 251 1 0.02 18.69
8 22 20 598 1 0.02 18.69
where xloc is the x dimension, yloc the y dimension, and totW the
values for each cell (xloc,yloc) in my matrix (55x95):
I'm trying:
Bio=with(pop, (table(factor(totW, levels = 1:55), factor(totW,
levels = 1:95))))
You probably should be using `cut` rather than `factor`. (Both will
create factor-class variables.) Factor will give you a different
level at each unique value while it appears that you want integer
valued "cuts". It's also unclear why you would be applying these cuts
to totW twice???? You have three rows with identical (23,20) x,y
coordinates and two each for (22,15) and (22,20), although the go
values are different.
But I don't get what I want. Hints? Thanks!
Better advice might follow if you said what you were really trying to
do and what the final answer should look like.
Nic
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