How to use character vector in formula in R

Asked Oct 17 '17 at 07:36

Active Oct 17 '17 at 07:36

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I have this formula for Rpackage DESEeq which takes ~Strain as formula. I have type.formula <- "Strain" and want to replace the Strain in formula with type.formula and be able to run the code below. How can I do this? So instead of this code below:

dds <- DESeqDataSetFromMatrix(countData = count.mat , colData = cond, design = ~Strain)

I want to run it like this:

dds <- DESeqDataSetFromMatrix(countData = count.mat , colData = cond, design = ~eval(type.formula))

asked Oct 17 '17 at 07:36

MAPK

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Use `as.formula(paste("~", type.formula))`. – Rui Barradas Oct 17 '17 at 07:54
@RuiBarradas Thanks! – MAPK Oct 17 '17 at 07:57
@RuiBarradas Please post that as an answer, so taht MAPK can accept the answer and everyone can see, that the question has been answered. – Bernhard Oct 17 '17 at 08:03
@Bernhard If I post this as answer it will be flagged for its length. It's so simple I really don't feel like posting it as an answer. – Rui Barradas Oct 17 '17 at 08:12
Something like `type.formula – Roland Oct 17 '17 at 08:44

How to use character vector in formula in R

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