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

[Peter Dalgaard BSA]

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: 

grid.layout[1,4]*... 

or 

grid.layout[[4]]*...

might be a neater solution. 

Or simply:

row.ctr <-  prod(grid.layout[1,4:7])
-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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