[BioC] Grid layout to data.frame with row & colums
James MacDonald
jmacdon at med.umich.edu
Wed Nov 25 12:57:12 CET 2009
Hi Daniel,
What you show below is by row (in the original data.frame). If the order of the resulting vector of C and N can be by column-major order, then this will work:
a <- data.frame(matrix(sample(c("C","N"), 100, TRUE), ncol = 10))
b <- data.frame(expand.grid(seq_len(dim(a)[1]), seq_len(dim(a)[2])), unlist(a))
Best,
Jim
>>> Daniel Brewer <daniel.brewer at icr.ac.uk> 11/25/09 6:16 AM >>>
Hello,
I have some tissue microarray(TMA) structure files that show the grid
layout of the probes/cores on the TMA e.g.
1 2 3 4
1 C C N
2 N C C
3 C C C
I would like to convert this into a data.frame with each row being a
different core i.e.
Row Column Status
1 2 C
1 3 C
1 4 N
2 1 N
2 2 C
2 3 C
3 1 C
3 2 C
3 3 C
Does anyone know of an elegant way of doing this?
Thanks
Dan
--
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Daniel Brewer, Ph.D.
Institute of Cancer Research
Molecular Carcinogenesis
MUCRC
15 Cotswold Road
Sutton, Surrey SM2 5NG
United Kingdom
Tel: +44 (0) 20 8722 4109
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The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.
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