Create a new matrix from a mapping process

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matthew arnott
matthew arnott 2013-4-18
I have mapped a set of numbers to a list of strings for example
KS = {'A','B','C'}; VS = [1:3]; x = containers.Map(KS,VS);
I have a 1 coloumn vector that looks like this
'A' 'B' 'B' 'C' 'A'
I want to create a new matrix which maps the letters to their respective numbers - so this would return 1 2 2 3 1
many thanks

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Andrei Bobrov
Andrei Bobrov 2013-4-18
编辑：Andrei Bobrov 2013-4-18
Vin = {'A' 'B' 'B' 'C' 'A'};
return1 = [Vin{:}] - 'A' + 1;
or
KS = {'A','B','C'};
VS = [1:3];
Vin = {'A' 'B' 'B' 'C' 'A'};
[~,ii] = ismember(Vin,KS);
out = VS(ii);
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matthew arnott
matthew arnott 2013-4-19
thanks for the help, however the fact that A = 1, B =2 etc is totally random it was just used as an example - however I have managed to loop through the matrix and vertcat a new matrix from the results of the containers.map function.

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