[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

From |
Tirthankar Chakravarty <[email protected]> |

To |
[email protected] |

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

Date |
Mon, 11 May 2009 00:36:15 +0100 |

There don't have to be missing values in var3. As long as your rows and columns variables don't take you everywhere in the matrix, i.e. you don't have all possible tuples A={(i,j) | i=1,..., maxrows; j=1,..., maxcols} you will be left with missing values. T On Mon, May 11, 2009 at 12:17 AM, Allan Joseph Medwick <[email protected]> wrote: > 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 <[email protected]> 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 >> [email protected] >> >> 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/ > -- To every ω-consistent recursive class κ of formulae there correspond recursive class signs r, such that neither v Gen r nor Neg(v Gen r) belongs to Flg(κ) (where v is the free variable of r). * * 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: Making a Matrix from Three Variables***From:*Allan Joseph Medwick <[email protected]>

**st: RE: Making a Matrix from Three Variables***From:*"Nick Cox" <[email protected]>

**st: RE: RE: Making a Matrix from Three Variables***From:*"Nick Cox" <[email protected]>

**Re: st: RE: RE: Making a Matrix from Three Variables***From:*Allan Joseph Medwick <[email protected]>

- Prev by Date:
**Re: st: RE: RE: Making a Matrix from Three Variables** - Next by Date:
**st: interpretation of disappearing siginifcance after adding interaction term** - Previous by thread:
**Re: st: RE: RE: Making a Matrix from Three Variables** - Next by thread:
**st: Making a Matrix from Three Variables** - Index(es):

© Copyright 1996–2024 StataCorp LLC | Terms of use | Privacy | Contact us | What's new | Site index |