[R] Problem passing data into read.table()

Peter Dalgaard BSA p.dalgaard at biostat.ku.dk
Tue Apr 23 22:04:47 CEST 2002

dmcwilli <dmcwilli at utk.edu> writes:

> Sorry for the delay, only just now got back to it ...
> 1. debug() did not help, would not show state of nrows inside read.table()
> 2. fill=T did help, could have dropped the last 2 rows (footer).
> By accident I found the problem.  read.table() returns a dataframe and the 
> result of the calculation of the number of rows has mode "list".  Coercing it 
> to numeric solves the problem.

Oho. Now why didn't I spot that the first time?..

> # coerce rows calculation to numeric
> row.ctr <- 
> as.numeric(grid.layout[4]*grid.layout[5]*grid.layout[6]*grid.layout[7])

However, you're mutiplying data frames there, and there's some amount
of unnecessary bureaucracy it that. Using: 




might be a neater solution. 

Or simply:

row.ctr <-  prod(grid.layout[1,4:7])
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
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