# Re: st: AW: changing the legend in twoway function

 From Miranda Kim To statalist@hsphsun2.harvard.edu Subject Re: st: AW: changing the legend in twoway function Date Mon, 10 Aug 2009 10:43:44 +0100

Thanks for this suggestion. My only problem then is to distinguish which item of the note corresponds to which graph...
```
Martin Weiss wrote:
```
<>
```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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```
```
*
*   For searches and help try:
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*   http://www.stata.com/support/statalist/faq
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```