create matlab column based function

Question

Does anybody know how to solve

in Octave? The accepted solution is using diff.

Matlab's diff seems to behave differently than the Octave's one and doesn't accept characters.

Any idea is appreciated.

A character can be represented as an int, have you tried typecasting? — AlwaysWrong
– AlwaysWrong, Commented Jan 21, 2012 at 17:46
thanks for the idea... the diff(), it doesn't make any difference whether it's a char or an int... might be an idea. trying — Atmocreations
– Atmocreations, Commented Jan 22, 2012 at 11:34

Amro · Accepted Answer · 2012-06-11 12:24:28Z

1

You can convert the characters to their ASCII codes, then run the solution as given:

a = {'d' 'f' 'a' 'g' 'g' 'w' 'a' 'h'};
aa = cellfun(@(c) c-0, a);             %# convert to ASCII

idx = find(diff(aa) == 0);
a([idx idx+1]) = [];

answered Jun 9, 2012 at 19:05

Amro

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3 Comments

that's exactly what I did the day - is somewhat ago now. thanks! =)

@Atmocreations: you're welcome. In the future, you could post a solution to your own problem if you found it.

Thanks, I know about that. But "AlwaysWrong" already gave the answer indirectly...