[R] Still need help w/ making a table

Griffith Feeney gfeeney at gfeeney.com
Tue Apr 3 21:12:49 CEST 2001

Use data.matrix(). From help(data.matrix):

data.matrix               package:base               R Documentation

Data Frame to Numeric Matrix


     Return the matrix obtained by converting all the variables in a
     data frame to numeric mode and then binding them together as the
     columns of a matrix.  Factors and ordered factors are replaced by
     their codes.

At 11:28 AM 4/3/01 -0500, you wrote:
>Greetings again. I'm still trying to coerce a pile of data into a
>frequency table format.  I've managed to do so using perl, so I now have a
>tab-delimited file that contains the contingency table I'm trying to use:
>Group  var1  var2  ...  varn
>  B     42   11          3
>  C     44   1           12
>  X     12   0           19
>I can read the table in using read.table(), but I end up with a data
>frame, and when I try to use as.table() it says:
>Error in as.table.default(df) : cannot coerce into a table
>What I need is a table object upon which I can perform a chi-square
>Any help will be very much appreciated!

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