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From |
"Michael Blasnik" <michael.blasnik@verizon.net> |

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

Subject |
st: Re: Matrix Kronecker Product Question |

Date |
Wed, 28 Sep 2005 16:00:31 -0400 |

I think you might want to check out help matrix rownames. Maybe

mat coleq a=:

will do what you want

Michael Blasnik

michael.blasnik@verizon.net

----- Original Message ----- From: "Ed Blackburne" <blackburne@shsu.edu>

To: <statalist@hsphsun2.harvard.edu>

Sent: Wednesday, September 28, 2005 2:57 PM

Subject: st: Matrix Kronecker Product Question

I previously posted a question regarding matrix colnames and have

received no response.

To help those able to help me, I have narrowed down the problem.

Here is a snippet of code you can run to verify my problem:

************************Beginning of code******************

matrix a=(1,2 \ 3,4)

matrix colnames a= col1 col2

matrix rownames a= row1 row2

matrix li a

local cname: colnames a

local rname: rownames a

matrix aPa=(a'*a)

matrix aPa=aPa#J(1,1,1)

matrix li aPa

matrix rownames aPa=`rname'

matrix colnames aPa=`cname'

matrix li aPa

matrix coleq aPa=""

matrix roweq aPa=""

matrix li aPa

*************************End of code***********************

It appears that after calculating a Kronecker product, the matrix aPa

has equation names in the matrix (I know these are actually r/c

identifiers from the J matrix) that I can't get rid of.

How do I fix this?

-Ed

* * 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: Collapse & Missing Values***From:*"Eric G. Wruck" <ewruck@econalytics.com>

**st: Matrix Kronecker Product Question***From:*Ed Blackburne <blackburne@shsu.edu>

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