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## Re: no way for simple matrix lookup ?

**From**: |
Mike Miller |

**Subject**: |
Re: no way for simple matrix lookup ? |

**Date**: |
Fri, 18 Jun 2004 13:42:48 -0500 (CDT) |

On Fri, 18 Jun 2004, Julius Smith wrote:

Oops - I meant diag(A(b',c)) of course -- jos

`I think the problem with that solution is that if b and c have length,
``say, 10,000, you have to produce a matrix A with 100,000,000 elements,
``then use diag() to discard 99,990,000 of them because they were not
``needed.
`
Mike
--
Michael B. Miller, Ph.D.
Assistant Professor
Division of Epidemiology
and Institute of Human Genetics
University of Minnesota
http://taxa.epi.umn.edu/~mbmiller/
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**no way for simple matrix lookup ?**, *D. Goel*, `2004/06/16`
**Re: no way for simple matrix lookup ?**, *Mike Miller*, `2004/06/16`
**Re: no way for simple matrix lookup ?**, *D. Goel*, `2004/06/16`
**Re: no way for simple matrix lookup ?**, *Mike Miller*, `2004/06/16`
**Re: no way for simple matrix lookup ?**, *Quentin Spencer*, `2004/06/16`
**Re: no way for simple matrix lookup ?**, *Julius Smith*, `2004/06/18`
**Re: no way for simple matrix lookup ?**, *Julius Smith*, `2004/06/18`
**Re: no way for simple matrix lookup ?**,
*Mike Miller* **<=**
**Re: no way for simple matrix lookup ?**, *Julius Smith*, `2004/06/18`

**Re: no way for simple matrix lookup ?**, *Etienne Grossmann*, `2004/06/16`
**Re: no way for simple matrix lookup ?**, *Jonathan C. Webster*, `2004/06/16`