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From |
Richard Herron <richard.c.herron@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: "Correct" way to convert a vector into a matrix |

Date |
Fri, 23 Dec 2011 11:45:17 -0500 |

Thanks, Matt and Scott! I didn't realize it was so easy to move back and forth between Mata and Stata. On Fri, Dec 23, 2011 at 11:35, Scott Merryman <scott.merryman@gmail.com> wrote: > You can use mata's -rowshape- : > > clear* > matrix temp_vector = (1, 2, 3, 4, 5, 6, 7, 8, 9) > mata: st_matrix("x", rowshape( st_matrix("temp_vector")', 3) ) > mat list x > > Scott > > > On Fri, Dec 23, 2011 at 10:21 AM, Richard Herron > <richard.c.herron@gmail.com> wrote: >> I would like to convert a vector, which I think is really a row matrix >> in Stata, into a square matrix. I have a loop solution that works, but >> it seems too awkward to be the "correct" approach. Is there a one (or >> two) line solution? I found a lot of matrix functions regarding >> diagonals, but none that wrap a vector into a matrix. >> >> In this case -svar- provides the long-run restriction matrix as a >> vector where entries are down columns, then across rows. >> >> * begin code >> matrix temp_vector = (1, 2, 3, 4, 5, 6, 7, 8, 9) >> matrix temp_matrix = J(3, 3, 0) >> foreach i of numlist 1/3 { >> foreach j of numlist 1/3 { >> scalar temp_scalar = `= `j' - 1' * 3 + `i' >> matrix temp_matrix[`i', `j'] = el(temp_vector, 1, temp_scalar) >> } >> } >> matrix list temp_matrix >> * end code >> >> Thanks! >> * >> * 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/ > > * > * 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/ * * 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: "Correct" way to convert a vector into a matrix***From:*Nick Cox <njcoxstata@gmail.com>

**References**:**st: "Correct" way to convert a vector into a matrix***From:*Richard Herron <richard.c.herron@gmail.com>

**Re: st: "Correct" way to convert a vector into a matrix***From:*Scott Merryman <scott.merryman@gmail.com>

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