On Aug 24, 2009, at 12:55 PM, Edward Chen wrote:
Hi all,
Is there a quick way to display or recall data points from a
specific region
on the plot? For example I want the points from x>5 and y>5?
Thank you very much!
Your question is pretty light on specifics but assuming that you have
columns x and y in a dataframe, df1, then in ordinary graphics you
could just execute this after another plotting function has been
performed:
with(subset(df1, x>5 & y>5), points(x,y, col="red") )
# I generally make my points smaller with cex=0.2 or cex=0.1
subset(f1, x>5 & y>5)[ , c("x","y")]
# should "recall" the values, if my wetware R interpreter is working
properly.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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