On Nov 20, 2009, at 10:23 AM, gcheer3 wrote:
Thanks for your reply. It is very helpful. I am sorry I didn't make
my
queston clearer.
I have two concerns about this graph.
One thing is denote 'sigma' and 'delta' as greek letters, usually I
use
'expression'. But I don't know how to use 'expression' in the 'legend'
The other thing is, the graph will also be print out with black and
white. I
try to use circle and squre to seperate 'delta1's curve and
'delta2's curve.
So even someone read the black and white handout, they can tell
which graph
is which. It will be nice if there is a notation on the graph, next
to a
square symble, it says 'delta 1', next to a circle symble, it
says'delta 2'.
I wrote it on the label with phrases, looks not professional.
Thank you for any suggestons.
my runable code is as follows:
sigma=c( 0.00625, 0.06250, 0.12500, 0.18750, 0.25000, 0.31250,
0.37500,
0.43750, 0.50000,
0.56250)
delta1=c(0.90768, 0.90489, 0.901788,0.898681, 0.8955, 0.89557,
0.892474,0.88936, 0.886262, 0.179959)
delta2=c(0.90830, 0.9110998, 0.914203, 0.917308, 0.920412, 0.923517,
0.926623, 1.71524, 1.7153, 1.7154)
plot(sigma, delta1, ylim=range(-0.5, 2), xlab='sigma', ylab='delta1--
square
delta2--circle', pch=22, type='o')
par(new=TRUE)
plot(sigma, delta2, ylim=range(-0.5, 2), xlab='sigma', ylab='delta1--
square
delta2--circle', col='red', axes=FALSE, type='o')
legend("topleft",legend=expression(Delta~1, Delta~2),
col=c("black","red"), pch=c(22,1) )
(I think I got the order of hte red and circle correct. You should
check.)
--
David.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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