R help - Aug 2013 - Making Sure your matrices are even

Hi,

I am trying to do a chi sqaure on a set of values, and my different groups
are not even. Is there away to add arbetrary symbols or #s to make the
matrices even? Or do I need to do a different type of pvalue analysis?
> S<-1:86
> B<-1:15
> V<-1:45
> table(S)
S
 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
85 86 
 1  1 
> chisq.test(table(S,B,V))
Error in table(S, B, V) : all arguments must have the same length



--
View this message in context:
http://r.789695.n4.nabble.com/Making-Sure-your-matrices-are-even-tp4673598.html
Sent from the R help mailing list archive at Nabble.com.

Try this

S2 <- data.frame(Group=rep("S", length(S)), Cat=factor(S))
B2 <- data.frame(Group=rep("B", length(B)), Cat=factor(B))
V2 <- data.frame(Group=rep("V", length(V)), Cat=factor(V))
table(rbind(S2, B2, V2))

-------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77840-4352

-----Original Message-----
From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org] On Behalf Of Docbanks84
Sent: Monday, August 12, 2013 5:31 PM
To: r-help at r-project.org
Subject: [R] Making Sure your matrices are even

Hi,

I am trying to do a chi sqaure on a set of values, and my
different groups
are not even. Is there away to add arbetrary symbols or #s to
make the
matrices even? Or do I need to do a different type of pvalue
analysis?
> S<-1:86
> B<-1:15
> V<-1:45
> table(S)
S
 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 
 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 
85 86 
 1  1 
> chisq.test(table(S,B,V))
Error in table(S, B, V) : all arguments must have the same
length



--
View this message in context:
http://r.789695.n4.nabble.com/Making-Sure-your-matrices-are-even
-tp4673598.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible
code.

Thank you David.

I had to sort the data afterwards for it to work:

S<-1:86
B<-1:15
V<-1:45
S2 <- data.frame(Group=rep("S", length(S)), Cat=factor(S))
B2 <- data.frame(Group=rep("B", length(B)), Cat=factor(B))
V2 <- data.frame(Group=rep("V", length(V)), Cat=factor(V))
table(rbind(S2, B2, V2))
y<-table(rbind(S2,B2,V2))
sort.list(y)
chisq.test(table(y))

This resulted in a chisquare of S2 v. B2 v. V2.



--
View this message in context:
http://r.789695.n4.nabble.com/Making-Sure-your-matrices-are-even-tp4673598p4673626.html
Sent from the R help mailing list archive at Nabble.com.