[R] RCurl question

[Brad McNeney]

The following call to curl fetches me the information I want (as html)
from a webserver:

curl -F list_file=@snptxt -F html_output=on
http://integrin.ucd.ie/cgi-bin/rs2cm.cgi

The file snptxt is a plain-text file in my working directory with the
following two lines:

rs6598
rs123456


In R I try to replicate this with RCurl as follows:

require(RCurl)
postForm(uri="http://integrin.ucd.ie/cgi-bin/rs2cm.cgi",
"list_file"="@snptxt", "html_output"="on")

but the table that is supposed to contain my results is empty (table
caption is Genetic Locations). The cgi script has apparently received
the html_output=on information though.

I get the same results on Linux and Windows -- sessionInfo() for both
follows.  Any pointers appreciated.

Thanks,

Brad
---
Brad McNeney
Statistics and Actuarial Science
Simon Fraser University

Linux:

> sessionInfo()
R version 2.11.0 (2010-04-22)
x86_64-unknown-linux-gnu

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] XML_3.1-0      RCurl_1.4-2    bitops_1.0-4.1

Windows:

> sessionInfo()
R version 2.11.1 (2010-05-31)
i386-pc-mingw32

locale:
[1] LC_COLLATE=English_Canada.1252  LC_CTYPE=English_Canada.1252
[3] LC_MONETARY=English_Canada.1252 LC_NUMERIC=C
[5] LC_TIME=English_Canada.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] XML_3.1-0      RCurl_1.4-2    bitops_1.0-4.1