How to plot "greater than" symbol on the x-axis

What have you tried this far and what part does not work?  If you
forget for a moment the fact that you want to have ">=1", ">=2", ...
can you do what you want with plain "1", "2", ...?  Telling us that
helps us help you.

Are you asking for the labels on the *tick marks* on the axis?  Right
now it sounds like you are asking for *the label* on the x axis, but
the part that you want multiple ones is confusing.

plot(1:10, xlab="1");

is different from:

plot(1:10, axes=FALSE);
axis(side=1, at=1:10, labels=1:10);

To add ">=" to the latter case, this works:

bquote("" >= 1:10)
labels <- lapply(1:10, FUN=function(x) substitute(>= t, list(t=x)));
plot(1:10, axes=FALSE);
axis(side=1, at=1:10, labels=labels);

On Sun, Sep 21, 2008 at 8:23 AM, Li, Bingshan <bli1 at bcm.tmc.edu> wrote:

Hi John,

Yes, you are right. I meant "greater-than-or-equal". According to your suggestion, I can plot the symbol only. But what I want is to have >=1, >=2 and so on as labels on xaxis. I did not make it work. Do you know how to make it? The expression("">=1"") did not work, and paste(expression("">=""), 1)
did not work either.

Thanks a lot!

Bingshan


-----Original Message-----
From: John Fox [mailto:jfox at mcmaster.ca]
Sent: Sun 9/21/2008 8:38 AM
To: Li, Bingshan
Cc: r-help at r-project.org
Subject: RE: [R] How to plot "greater than" symbol on the x-axis

Dear Bingshan,

It isn't entirely clear what you want to do. I think that you want the
"greater-than-or-equal-to" symbol, not "greater than," but by itself or in
an expression? For the first, xlab=expression("" >= ""), and for the second,
e.g., xlab=expression(x >= x[min]). More generally, see ?plotmath.

I hope this helps,
 John

------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
web: socserv.mcmaster.ca/jfox

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]

On

Behalf Of Li, Bingshan
Sent: September-21-08 12:37 AM
To: r-help at r-project.org
Subject: [R] How to plot "greater than" symbol on the x-axis


Hello everyone,

I want to plot a "greater than" symbol (the "_" under ">") on the x-axis

in

the labels. Is it possible to do it?

Thanks.

Bingshan

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