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st: AW: changing the legend in twoway function


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: AW: changing the legend in twoway function
Date   Mon, 10 Aug 2009 11:17:18 +0200

<> 

Why not accumulate the thing for a -note- to the graph. Gives you more
degrees of freedom re design...


*************
clear*

inp byte(a   b   c)
1   3   4
2   5   8
end

program define polysameplot

foreach i of numlist `0' {
local gr /* 
 */ "`gr' function y=a[`i']+b[`i']*x+c[`i']*x^2, range(-5 5) ||"
local note /* 
*/ "`note' "a=`=a[`i']', b=`=b[`i']', c=`=c[`i']'""
}

tw `gr', note(`note') legend(off)

end

polysameplot 1 2
*************



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Miranda Kim
Gesendet: Montag, 10. August 2009 11:01
An: statalist@hsphsun2.harvard.edu
Betreff: st: changing the legend in twoway function

Hi,
Can anyone help me with this?
I am trying to write a program that plots the functions a + bx + cx2 (on 
the same graph), where a, b and c are stored variables. I want to label 
the legend with the set of values a, b and c for each graph.
For example if I have:
a   b   c
1   3   4
2   5   8
then I want to have "a=1, b=3, c=4" and "a=2, b=5, c=8" assigned to the 
relevant graph in the legend. How can I do this? Also , how complicated 
would it be to control the colours or line types of the graphs?

My current program is as follows:

program define polysameplot

    foreach i of numlist `0' {
        local gr "`gr' function y=a[`i']+b[`i']*x+c[`i']*x^2, range(-5 
5) ||"
    }
    twoway `gr'

end

polysameplot 38 39 40 41

I use Stata 10.

Thanks a lot for your help!

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