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From |
"R.E. De Hoyos" <redeho@hotmail.com> |

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

Subject |
st: Re: RE: absolute values of matrix elements [stata 8] |

Date |
Tue, 15 Nov 2005 09:37:44 -0000 |

Thanks Nick.

Rafa

----- Original Message ----- From: "Nick Cox" <n.j.cox@durham.ac.uk>

To: <statalist@hsphsun2.harvard.edu>

Sent: Friday, November 11, 2005 5:36 PM

Subject: st: RE: absolute values of matrix elements [stata 8]

I think you are looking at the wrong package. -matewmf- will

do this. It is more entertaining to write your own

as a couple of -forval- loops.

STB-56 dm79 . . . . . . . . . . . . . . . . . . Yet more new matrix commands

(help matcorr, matewmf, matvsort, svmat2 if installed) . . N. J. Cox

7/00 pp.4--8; STB Reprints Vol 10, pp.17--23

commands to produce a correlation matrix, elementwise monadic

function of another matrix, selected subsets of matrix rows

and columns, vec or vech of a matrix, elements sorted within

a vector, matrix from a vector, and commands to save matrices

. mat a = (1,2,-2,-1)

. matewmf a b, f(abs)

. mat li b

b[1,4]

c1 c2 c3 c4

r1 1 2 2 1

Nick

n.j.cox@durham.ac.uk

R.E. De Hoyos

I am trying to transform a matrix A into matrix B where B's elements are the abolute values of A's. B[i,j] = | A[i,j] | I found Nick's -matodd- but it seems not to have an -abs- elementwise option.* * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: RE: absolute values of matrix elements [stata 8]***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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