webPNG {CGIwithR} | R Documentation |
webPNG
sets up a bitmap graphics device for graphs drawn within
a CGI script.
webPNG(file, ...)
file |
A filename, as a character string |
... |
Any other arguments to bitmap |
Before webPNG
is called, the variable
graphDir
must be a character string giving the location
where graphics files will be written by R and found by the web server.
The directory specified in graphDir
must be writeable and
readable by the web server in order to work. For example, if
graphDir
is "/users/david/public_html/graphs/"
(note
the trailing /
!), and if file
is "mygraph.png"
,
the next graph will be written to
"/users/david/public_html/graphs/mygraph.png"
, provided that
/users/david/public_html/graphs
has suitable permissions.
None (invisible(NULL)
)
David Firth d.firth@warwick.ac.uk
## Not run: graphDir <- "/users/david/public_html/graphs/" webPNG("mygraph.png") ## then do whatever plotting is required... ## End(Not run)