Question

Adding a column to phenoData dataframe

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ieee529 contact ▴ 30

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Last seen 10.4 years ago

How can I add a new phenotype (column) to an existing phenoData object without creating a new AnnotationDataFrame object and adding that?

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ADD COMMENT • link updated 6.8 years ago by kimdissi • 0 • written 12.7 years ago by ieee529 contact ▴ 30

score 4 · Answer 1 · 2012-05-06

On Sun, May 6, 2012 at 6:48 AM, ieee529 contact <ieee529@gmail.com> wrote: > How can I add a new phenotype (column) to an existing phenoData object > without creating a new AnnotationDataFrame object and adding that? > > Here is an example: library(Biobase) data(sample.ExpressionSet) head(pData(sample.ExpressionSet)) pData(sample.ExpressionSet)$newColumn = rnorm(ncol(sample.ExpressionSet)) head(pData(sample.ExpressionSet)) Sean [[alternative HTML version deleted]]