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

To |
statalist@hsphsun2.harvard.edu |

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

Date |
Fri, 23 Dec 2011 11:21:41 -0500 |

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/

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

**Re: st: "Correct" way to convert a vector into a matrix***From:*Matthew White <mwhite@poverty-action.org>

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