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From |
David Airey <david.airey@vanderbilt.edu> |

To |
Statalist <statalist@hsphsun2.harvard.edu> |

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

Date |
Fri, 17 Jul 2009 20:30:33 -0500 |

.

-Dave

--- Miranda wrote:> I wondered if there is any way of adding functions onto the samegraph> using a separate command (on a separate line), so as to be able toloop> 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

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