[BioC] limma makeContrasts error

[michael watson (IAH-C)]

Note that this is an R thing, I think - variable names cannot begin with
a number

Mick

-----Original Message-----
From: bioconductor-bounces at stat.math.ethz.ch
[mailto:bioconductor-bounces at stat.math.ethz.ch] On Behalf Of James W.
MacDonald
Sent: 08 September 2005 16:22
To: Georg Otto
Cc: bioconductor at stat.math.ethz.ch
Subject: Re: [BioC] limma makeContrasts error



I don't think you can use makeContrasts() with names that start with
numbers (I certainly have never been able to). You can either change the
names to hpf12 and hpf6, or make the contrasts matrix by hand.

Best,

Jim


> 
> For several reasons I do not want to change the names of the groups, 
> therefor I would be very grateful for a hint how to deal with these 
> group names.
> 
> I am using limma 2.0.7 and R 2.1.0
> 
> Thanks a lot!
> 
> Georg
> 
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--
James W. MacDonald
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109
734-647-5623

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