Re: Division by Zero (Error Handling)
- To: mathgroup at smc.vnet.net
- Subject: [mg66974] Re: [mg66950] Division by Zero (Error Handling)
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Tue, 6 Jun 2006 06:26:56 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
For the first part:
f[x_List,y_List]:=
x/(y/.(0->Infinity))/;
Dimensions[x]==Dimensions[y];
A=Table[Random[Integer,{1,3}],{3},{3}]
{{3, 1, 2}, {1, 3, 2}, {1, 3, 1}}
B=Table[Random[Integer,{0,3}],{3},{3}]
{{1, 2, 2}, {0, 3, 1}, {3, 1, 3}}
f[A,B]
{{3, 1/2, 1}, {0, 1, 2}, {1/3, 3, 1/3}}
Bob Hanlon
---- Bruce Colletti <vze269bv at verizon.net> wrote:
> When dividing (elementwise) two matrices of similar dimension (e.g., A/B), zero-elements in B cause a "division by zero" error message. In such a case, regardless of numerator, I want the pair's ratio to be zero.
>
> Without building a module that defines modified matrix division, how can I establish that whenever (throughout the notebook) division by zero occurs (regardless of numerator), that the result can be zero?
>
> Thanks.
>
> Bruce
>
--
Bob Hanlon
hanlonr at cox.net