On Jul 13, 2011, at 7:42 PM, JIA Pei wrote:




Hi, Thanks David Winsemius:

"mtext" works !! However, in R plot, "mtext" will automatically overlap/overwrite the existing coordinates, which makes the coordinates a messy. Refer to http://www.visionopen.com/Rplot.png , which is produced by only 3 lines.

dev.new(width = 640, height = 480)
plot(sin, -pi, 2*pi)
mtext(text="2.1000", side = 1, line = 1,  at = 2.1)

In order to avoid the coordinates overlap, can I change the position of "2.1000" from outside the box to inside the box? If possible, how to?
I tried “outer = FALSE,” nothing special happened ever !!

You should use text() rather than mtext() if you are going to plot within the "user area".



cheers
Pei



On Wed, Jul 13, 2011 at 1:41 PM, David Winsemius <dwinsem...@comcast.net > wrote:

On Jul 13, 2011, at 1:22 PM, JIA Pei wrote:

Hi, all:

I used two lines of very simple code to draw a sin curve.

dev.new(width = 640, height = 480)
plot(sin, -pi, 2*pi)

First look at:

?mtext   # then try
mtext(text="2.5000", side = 1, line = 1,  at = 2.5)



Now, I added a specific line (red line in the picture at
http://www.visionopen.com/Rplot.png) by using abline.
However, I still love to add the X-coordinate "2.50000" outside the
rectangle box. How to do it in R?
Right now, I'm using Windows Paint to add the characters "2.50000" up to the
plot drawn by R.


--
David Winsemius, MD
West Hartford, CT




--

Pei JIA

Email: jp4w...@gmail.com
cell:    +1 604-362-5816

Welcome to Vision Open
http://www.visionopen.com

David Winsemius, MD
West Hartford, CT

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