Displaying 4 results from an estimated 4 matches for "jcarmichael".
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carmichael
2008 Aug 25
3
Maintaining repeated ID numbers when transposing with reshape
I have a dataset in "long" format that looks something like this:
ID TEST RESULT
1 A 17
1 A 12
1 B 15
1 C 12
2 B 8
2 B 9
Now what I would like to do is transpose it like so:
ID TEST A TEST B TEST C
1 17 15 12
1 12 . .
2
2008 Jul 23
4
Using PrettyR to produce LaTeX output
Hello everyone. I am new to R, so please bear with me. I am trying to find
an easy way to export descriptive statistics and other information about my
data frame to a LaTeX format.
I have found the describe function in PrettyR to be very helpful in
producing results in the exact format I'm looking for. However, the value
of the describe function is a LIST (rather than a data frame) which I
2008 Jul 28
1
Negative Binomial Regression
Hello.
I am attempting to duplicate a negative binomial regression in R. SAS uses
generalized estimating equations for model fitting in the GENMOD procedure.
proc genmod data=mydata (where=(gender='F'));
by agegroup;
class id gender type;
model count = var1 var2 var3 /dist=NB link=log offset=lregtm;
repeated subject=id /type=exch;
run;
Since my dataset has several observations for
2008 Aug 22
2
Using interactive plots to get information about data points
I have been experimenting with interactive packages such iplots and playwith.
Consider the following sample dataset:
A B C D
1 5 5 9
3 2 8 4
1 7 3 0
7 2 2 6
Let's say I make a plot of variable A. I would like to be able to click on
a data point (e.g. 3) and have a pop-up window tell me the corresponding
value for variable D (e.g. 4). I am also trying to produce multiple