On 12/27/2010 12:43 AM, leyla khodakarim wrote:
Dear All
It is very kind of you to guide me.
When I want to run this line, I see this error
stat.obs<- apply(GS, 2, function(z) Hott2(t(DATA[which(z==1),]), cl))
Error in colSums(w * x) : 'x' must be an array of at least two dimensions
cl<- as.factor(y)
GS: a matrix with 0 or 1
GS: gene sets
-> a data matrix with rows=genes,
columns= gene sets,
GS[i,j]=1 if gene i in gene set j
GS[i,j]=0 otherwise
Hott2<- function(x, y, var.equal=TRUE) #T2 hoteling
Y<- c(1,0,0,0,0,0,1,1,0,0,1,0,1,1,1,1,0,1,0,1)
Data=transpose(X)= gene expression: row=40 gene, column=10 sample
Data: there is in attachment file
Hi Leyla,
Your attachment didn't make it to the list, but the problem may be that
which(z==1) reduces the matrix (array? data frame?) X to a vector. One
other thing that looks funny is the capitalization. In R, X and x are
different, as are DATA and Data. First thing is to just print out the
data you are trying to analyze:
DATA[which(z==1)]
and see if it really is an array with at least two dimensions.
Jim
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