[R] Plot using different symbols depending on value.
Roger.Bivand at nhh.no
Tue Jan 21 13:47:03 CET 2003
On Tue, 21 Jan 2003, Morten Sickel wrote:
> I am making a plot from R indicating an average, min and max value for a
> number of sample types. as horizontal lines with the sample types on the
> y-axis. (see http://home.newmedia.no/sickel/R.html for the plot and code) In
> some cases, the min value is the detection limit, and I would like to
> indicate that bu using a <, rather than the usual | I use for indicating the
> I am plotting each of the values using:
> Is it some kind of inline if, iif(cond,true,false), function in R? I have
> looked for it but not found it.
Maybe ifelse(test, yes, no), for a value of the same shape as test?
pch=ifelse(test, "I", "<") should work for points, I think.
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