Using if with char

I have a string being read on a line by line basis which is working fine. Then I check for the $PSIMTPP string and subsequently store this as recordsraw. The string comes in a comma delimited format and I need to check for the third colum. If the third column is either a B C or M I need to store the string. There is another parts of the code that stores a log(loggedsets) but this is working so.

tpp = strfind(sample, '$PSIMTPP')

    if tpp == 1        

        log(loggedsets).recordsraw(index).tpp = textscan(sample, '%s %s %s %s %n %s %s %n %n %n %n', 'delimiter',',');

        if strcmp(log(loggedsets).recordsraw(index).tpp{:,3}, 'B')

            log(loggedsets).recordsb(index).tpp = log(loggedsets).recordsraw(index).tpp

        elseif strcmp(log(loggedsets).recordsraw(index).tpp{:,3}, 'C')

            log(loggedsets).recordsc(index).tpp = log(loggedsets).recordsraw(index).tpp

        elseif strcmp(log(loggedsets).recordsraw(index).tpp{:,3}, 'M')

            log(loggedsets).recordsm(index).tpp = log(loggedsets).recordsraw(index).tpp

        end

        index = index + 1

    end

When I run this code everything works fine and I create the vectors I need but with one small problem. So for example in the string I have I have one B followed by 200 M and 200 C. The program creats 400 recordsm and 400 recordsc which are half empty.

I know its something to do with the if ifelse loop populating empty fields but not sure how to ammend?

Any ideas?

Answer 1

[Craig]

Sorry just realized it was a result of incorrect indexing. I needed to create three seperate index for each possible input.

if tpp == 1

        log(loggedsets).recordsraw(index).tpp = textscan(sample, '%s %s %s %s %n %s %s %n %n %n %n', 'delimiter',',');

        if strcmp(log(loggedsets).recordsraw(index).tpp{:,3}, 'B')

            log(loggedsets).recordsb(indexb).tpp = log(loggedsets).recordsraw(index).tpp

            indexb = indexb +1

        elseif strcmp(log(loggedsets).recordsraw(index).tpp{:,3}, 'C')

            log(loggedsets).recordsc(indexc).tpp = log(loggedsets).recordsraw(index).tpp

            indexc = indexc +1

        elseif strcmp(log(loggedsets).recordsraw(index).tpp{:,3}, 'M')

            log(loggedsets).recordsm(indexm).tpp = log(loggedsets).recordsraw(index).tpp

            indexm = indexm +1

        end

        index = index + 1

    end