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From |
Allan Joseph Medwick <amedwick@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: RE: Making a Matrix from Three Variables |

Date |
Sun, 10 May 2009 19:17:12 -0400 |

This works very well, but I ran into the 1,200 row x 80 column limitation in "tab". It would be great if this feature was added to "table", which does not have the same limitation. I am still trying out the more elaborate solutions. There were no missing values in var3, but there were missing values in my matrix, so I am trying to figure out what went wrong. Thanks! Allan On Sun, May 10, 2009 at 11:09 AM, Nick Cox <n.j.cox@durham.ac.uk> wrote: > Sorry, I should have mentioned that you need to scale the matrix: > > . su z > > Variable | Obs Mean Std. Dev. Min Max > -------------+-------------------------------------------------------- > z | 9 .4411562 .2579396 .0610638 .684176 > > . mat matrix = matrix * r(mean) > > Nick > n.j.cox@durham.ac.uk > > Nick Cox > There have been several elaborate solutions to this, but a very simple one may be enough -- using an official command only. > > I gather that each row and column combination (var1, var2) occurs once only. > > That being so, note that > > tab var1 var2 [aw=var3], matcell(matrix) > > yields a matrix. But see help on -limits-. > > Allan Joseph Medwick > > I have three variables (var1, var2, var3). I would like to create a > matrix where the values of var1 are the columns (ascending), the > values of var2 are the rows (also ascending), and the values of var3 > are the elements in the matrix. I know there must be a user defined > procedure out there to do this, but I haven't been able to find it. > > > * > * 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/ > -- Allan Joseph Medwick Telephone: 267.872.0336 * * 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: RE: RE: Making a Matrix from Three Variables***From:*Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>

**References**:**st: Making a Matrix from Three Variables***From:*Allan Joseph Medwick <amedwick@gmail.com>

**st: RE: Making a Matrix from Three Variables***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**st: RE: RE: Making a Matrix from Three Variables***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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