[R] using data() in an example

[Christopher Adolph]

Hi all,

I'm trying to put together examples in an R package, and am having trouble
reading data from the package's data directory.  The data are in
comma-separated variable files, so to read a file like gw.csv, I include
in the data directory both bailey.csv and a file bailey.R which contains:

bailey <- read.csv("bailey.csv",na.strings=".");

so that typing

data(bailey)

should load the data from bailey.csv.

The problem is that the data is being read in "wrong", as a single column,
rather than a data frame with four columns.  I get:

   data.p1.p2.model
1        0.57,2,1,1
2        0.54,4,1,1
3        0.54,6,1,1
4        0.52,8,1,1
5       0.54,10,1,1
6       0.53,50,1,1
7        0.93,2,1,2
8        0.61,4,1,2
9        0.53,6,1,2
10       0.49,8,1,2
11      0.43,10,1,2
12      0.11,50,1,2
13       0.89,2,1,3
14       0.72,4,1,3
15       0.62,6,1,3
16       0.58,8,1,3
17      0.49,10,1,3
18      0.12,50,1,3
19       0.51,2,1,4
20       0.43,4,1,4
21       0.41,6,1,4
22       0.37,8,1,4
23      0.37,10,1,4
24      0.31,50,1,4

Which is wrong.  But if I use the very same command as above, but from the
command line (without the data() wrapper), it comes in right:

> read.csv("c:/progra~1/R/library/seemc/data/bailey.csv",na.strings=".")
   data p1 p2 model
1  0.57  2  1     1
2  0.54  4  1     1
3  0.54  6  1     1
4  0.52  8  1     1
5  0.54 10  1     1
6  0.53 50  1     1
7  0.93  2  1     2
8  0.61  4  1     2
9  0.53  6  1     2
10 0.49  8  1     2
11 0.43 10  1     2
12 0.11 50  1     2
13 0.89  2  1     3
14 0.72  4  1     3
15 0.62  6  1     3
16 0.58  8  1     3
17 0.49 10  1     3
18 0.12 50  1     3
19 0.51  2  1     4
20 0.43  4  1     4
21 0.41  6  1     4
22 0.37  8  1     4
23 0.37 10  1     4
24 0.31 50  1     4
>

What could be causing this?  I just want to get the example working; in
practice one wouldn't need to use the data() command for this package, but
it seems to be the only reliable way to get stuff out of the data
directory for running examples.  Any ideas?

Thanks

Chris

+-----------------------------------------------------------------+
Chris Adolph				   Department of Government
work:  617-496-4099			Littauer Center, North Yard
cell:  617-642-0683				 Harvard University
email:  cadolph at fas.harvard.edu		   Cambridge, MA 02138, USA
URLs:  www.fas.harvard.edu/~cadolph	   	  chris.adolph.name
+-----------------------------------------------------------------+