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Iterating over cell arrays
From: |
Hamish Allan |
Subject: |
Iterating over cell arrays |
Date: |
Tue, 25 Jan 2005 02:06:48 +0000 |
Hi,
I'd like to be able to check for membership in a cell array, e.g.:
octave> cell_array = { 'Foo' 'Bar' 'Baz' 'FooBar' };
octave> ismember('Bar', cell_array)
ans =
1 1 1
octave> ismember('FooBar', cell_array)
ans =
1 1 1 1 1 1
octave> ismember('z', cell_array) % NB if cell_array were a character
matrix this would return 'ans = 1'
ans = 0
But of course I get:
error: binary operator `==' not implemented for `cell' by `cell'
operations
error: evaluating binary operator `==' near line 67, column 24
[etc.]
Because there is no guarantee that cell matrices will be comparable,
none are compared.
Two queries:
1) Would it be reasonable for ismember() to be designed to behave in
the way I describe above?
2) Is there a simpler way to do what I want to do than writing a
function to iterate over the members of cell_array? I don't even need
the intersection, I just want a true or false test for membership.
Many thanks,
Hamish
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- Iterating over cell arrays,
Hamish Allan <=