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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

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

Subject |
st: RE: AW: Cannot initialize matrix to store summed coefficient estimates |

Date |
Thu, 24 Sep 2009 15:45:20 +0100 |

Alternatively, if you seek debugging advice, show us the exact code please. Nick n.j.cox@durham.ac.uk Martin Weiss help simulate does all this automatically, and is easy to understand with the example in the help file. Diederik van Liere I am trying to write a simple macro that takes a random sub sample of my dataset, run my regression and aggregates the e(B) matrices in a new matrix so I can calculate the average coefficient estimate and the average standard error. However, I am a bit stuck with initializing the matrix that will contain the summed coefficients and summed standard errors. What I have been trying to do looks like this: local define matrix X foreach v of varlist 'varlist' { //create 1 x k matrix with initial values 0.0 matrix X[1, "`v'"]= 0.0 } forvalues i =1/n { preserve generate x =runiform() //some more code to create random sample regress varlist matrix y = e(b) foreach b of e(b) { matrix X[1,`b'] = matrix X[1,`b'] + _b["`b'"] } matrix list X restore } Unfortunately, I don't know how to fix the error that is thrown on row 3 (matrix X[1, "`v'"] = 0.0 Stata exits with a type mismatch error and I have tried a whole range of alternatives but so far nothing works.... I would appreciate any suggestions to get this macro working and I am sure it's quite simple but I have been staring at this for too long :( * * 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/

**References**:**st: Cannot initialize matrix to store summed coefficient estimates***From:*Diederik van Liere <Diederik.vanLiere@Rotman.Utoronto.Ca>

**st: AW: Cannot initialize matrix to store summed coefficient estimates***From:*"Martin Weiss" <martin.weiss1@gmx.de>

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