[BioC] Design Matrix Question

[Jason Skelton]

Hi

I'd like to construct a design matrix similar to the following but have 
no idea how to do it

I'm trying the model.matrix function

Slide	Treatment1	Treatment2	Treatment3
1	-1		0		0
2	1		0		0
3	-1		0		0
4	1		0		0	
5	1		0		0
6	-1		0		0
7	0		-1		0
8	0		1		0
9	0		-1		0
10	0		1		0
11	0		1		0
12	0		-1		0
13	0		0		-1
14	0		0		1
15	0		0		-1
16	0		0		1
17	0		0		1
18	0		0		-1

-1 represents Cy5/cy3
1 represents Cy3/Cy5


Cheers

Jason

-- 
--------------------------------
Jason Skelton
Pathogen Microarrays
Wellcome Trust Sanger Institute
Hinxton
Cambridge
CB10 1SA

Tel +44(0)1223 834244 Ext 7123
Fax +44(0)1223 494919