Prev: Load Listbox from Array
Next: Problem with third-level-choosers
From: Matt J on 30 Jul 2010 10:39
"Nils Tobias " <nils.kraemer(a)uni-ulm.de> wrote in message <i2ubbm$olu$1(a)fred.mathworks.com>...
> Thanks Stefan,
>
> I thought there might be way to redefine this property. Anyway in my case it somehow makes sense because I could define my equation also without the division... which I probably should do.
>
> But for now I just calculate it like you suggested with a simple M-file called wrongdivision.m
=============

You can create a specialized array type with the behavior you want using the function down at the bottom of this post, which uses this FEX tool

http://www.mathworks.com/matlabcentral/fileexchange/26611-on-the-fly-definition-of-custom-matrix-objects

It will let you do things like this

>> O=SpecialZeros(0);

>> 1/O

ans =

Inf

>> 0/O

ans =

0

>> O/1

ans =

0



%%%%%%%%%%%%
function obj=SpecialZeros(A)

obj=MatrixObj;
obj.Params=A;

obj.Ops.rdivide=(a)wrongdivision;
obj.Ops.mrdivide=(a)wrongdivision;


function out=wrongdivision(A,B)

if isa(A,'MatrixObj'), A=A.Params; end
if isa(B,'MatrixObj'), B=B.Params; end

C=A./B;
C( isnan(C)& A==0 )=0;

%out=SpecialZeros(C);
out=C;


end

end
 | 
Pages: 1
Prev: Load Listbox from Array
Next: Problem with third-level-choosers