[R] null plotting symbol ?
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Mon May 5 22:40:34 CEST 2003
tblackw at umich.edu writes:
> I am calling plot() with argument pch as a vector of numeric
> symbol codes, the same length as x and y. Is there some code
> which produces no symbol - a blank - so that I can come back
> with a second call to points() and fill in these locations
> using a different fill color and a different symbol size ?
> There's always a work-around, but both x and y are generated
> on the fly by calls to cumsum(), so it's inconvenient to put
> NAs into either x or y to suppress plotting that way. Guess
> I should *try* mixing numeric and character symbol codes,
> although the example in help("points") explicitly uses a list
> at that point.
Doesn't NA work there??
works for me on Linux, but there could be device dependencies.
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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