William Simpson wrote:
On Sat, Jan 2, 2010 at 4:55 PM, Charles C. Berry <cbe...@tajo.ucsd.edu> wrote:
On Sat, 2 Jan 2010, William Simpson wrote:
I would like a scatterplot matrix and a correlation matrix for the
following set-up.
The data (dataframe d) are like this:
angle resp
-90 182
-60 137
-30 ...etc
0
30
60
90
...etc
I would like each cell in the matrix to be the scatterplot of the
responses for each pair of angles ( -90 vs -60, -90 vs -30, etc). Same
for the correlation matrix.
Please tell me what to do. Thanks very much!
1) You need to "provide commented, minimal, self-contained, reproducible
code."
d<-read.table("rstuff/data.dat",header=TRUE)
Now what? :-)
certainly it's not
pairs(d)
Now that we are able to help with some more detailed view of your data
(although you could have helped helping by making it easier for us to
import your data into R), the answer is:
Almost, after reshaping:
dwide <- reshape(d, v.names="resp", idvar="ID",
timevar="angle", direction="wide")
pairs(dwide[,-1])
Best,
Uwe Ligges
2) You need to fill in some missing info: Either you have only one
response for each angle, or you need a third variable to pair up the
corresponding responses for one angle with those of another.
contents of rstuff/data.dat:
angle resp ID
-90 182 1
-60 137 1
-30 123 1
0 67 1
30 32 1
60 12 1
90 13 1
-90 178 2
-60 111 2
-30 137 2
0 94 2
30 59 2
60 1 2
90 19 2
I actually have a lot more than 2 experimental units (ID)...
Thanks for any help
Bill
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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
