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From |
Maarten buis <maartenbuis@yahoo.co.uk> |

To |
stata list <statalist@hsphsun2.harvard.edu> |

Subject |
RE: Re: st: Plotting several polynomials on the same graph |

Date |
Fri, 17 Jul 2009 15:51:07 +0000 (GMT) |

--- Miranda wrote: > I wondered if there is any way of adding functions onto the same graph > using a separate command (on a separate line), so as to be able to loop > over these and superimpose several (i.e. instead of using the '||' in > the 'twoway' command) The trick is to create the graph command in a loop while storing it in a local macro, like in the example below: *---------------- begin example ------------------- input a b c 1 2 3 2 3 4 1 2 -3 2 3 -4 end forvalues i = 1/4 { local gr "`gr' function y = a[`i'] + b[`i']*x + c[`i']*x^2" local gr "`gr', range(-3 3) ||" } twoway `gr' *--------------- end example ---------------------- Hope this helps, Maarten ----------------------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://home.fsw.vu.nl/m.buis/ ----------------------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Plotting several polynomials on the same graph***From:*Miranda Kim <mk@mrc.soton.ac.uk>

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