[BioC] Can not plot only one chip at the time...

[Rafael A. Irizarry]

this is a bug. the line 

x <- intensity(x)[Index, ]

in the function plotDensity.AffyBatch should be

x <- intensity(x)[Index, ,drop=FALSE]

while we fix it for the next release, you can change it or simply call 

plotDensity(exprs(NHEK[1]))

-r


apply(mat, 2, density)
On Wed, 13 Aug 2003, 
Anna Gustafsson wrote:

> Dear all,
> 
> I would be grateful if someone could help me with a small thing I am stumbling over and can not solve:
> 
> When trying to plot AffyBatch (totally 8 experiments in this case) using hist() and plotAffyRNAdeg() I can only plot multiple slides (e.g using [1:2]) but I am not able to plot just one chip. (I want to be able to tell different curves apart). 
> I have tried [1] and [1:1] but get the same error message:
> 
> > library(affy)
> > NHEK<- ReadAffy(widget=TRUE)
> > hist(NHEK[1])
> Error in apply(mat, 2, density) : dim(X) must have a positive length
> 
> I am working on windows with Rw1071 and updated all my packages from CRAN and Bioconductor yesterday from within the program.
> 
> All the best! :o)
> // Anna
> 
> 
> *******************************************************************************************
> Anna Gustafsson
> 
> Royal Institute of Technology
> AlbaNova University Center
> Stockholm Center for Physics, Astronomy and Biotechnology
> Department of Molecular Biotechnology
> 106 91 Stockholm, Sweden
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