function input and output

Question

Carl Narup 2017-10-5

0
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关闭： MATLAB Answer Bot 2021-8-20

Im creating a function where MPcell1 is a cell with 24 artist names of songs, unic is a cell with 11 unique artist names. I want the second row of the unic cell to add a 1 everytime unic = MPcell1 but that isn't happening. What is wrong with this?

function totsum = songsum(MPcell1, unic, c)
for i = 1:length(MPcell1)
  if MPcell1(i) == unic
     totsum = unic(2,c)+1;
     c = c+1;
    end
end
end

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James Tursa 2017-10-5

Every time MPcell1(i) matches any cell from the first row of unic?

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Answer 1

Niels 2017-10-5

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Hi Carl Narup,

1. u get access to the cell arrays with {}

2. if you want to compare strings use strcmp

% here is 1 solution, i am not sure if you will understand it :/ with my test strings
MPcell1 = {'a', 'e', 'q', 't', 'w', 'q', 't', 'a', 'b', 'a'};
unic = {'a', 'q', 'w'};

-------------------------

function totsum = songsum(MPcell1, unic, c)
numb_artists = length(unic); % when adding a row to unic u get a matrix, using length can be confusing then
unic(2,:) = cell(1,numb_artists); % adding a row
for i = 1:numb_artists
    unic{2,i} = sum(strcmp(MPcell1,unic{1,i}));
end
end