sandsky ha scritto:
Data has the first row for variable name and the first column for sample
name. I want to take "Log" for all data, but how to compute without the
first column for sample name.
log.raw_data=log(raw_data,base=2)
Error in Math.data.frame(list(sample_id = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, :
non-numeric variable in data frame: sample_id
Thank you in advance,
Jin
You are trying to calculate a logarithm for a character variable.
You most probably imported the data with read.table (....header = FALSE).
try
sapply(raw_data, is.numeric)
to see which are the columns that contains "logarithmizable" items
8rino
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