analyse txt file with rows of different length

Hello, I have a data file input.txt which looks like this (simplified)

hello world
the sun
i like the sun
sun world world

what I want is to read this file, count the distinct words and make a matrix of it, which has the form

              word1   word2    word3   ...  wordn
example1        *       *        *     ...    *
example2        *       *        *     ...    *
...
examplem        *       *        *     ...    *

where the * represents how many times a word is in that specific example. In this case the matrix will look like this:

1   1   0   0   0   0
0   0   1   1   0   0
0   0   1   1   1   1
0   2   0   1   0   0

I have tried this with textscan, but I get stuck with the cell arrays. I hope someone can help me with this..

Answer 1

[Jan]

Answering is easier, if you ask a specific question. It is not clear, what kind of assistence you need.

FID = fopen(FileName, 'r');
if FID < 0, error('Cannot open file'); end
Data = textscan(FID, '%s', 'Delimiter', '\n');
Lines = Data{1};
% Now [Lines] is a cell string containing the lines
LongLine = sprintf('%s ', Lines{:});
Data = textscan(LongLine, '%s', 'Delimiter', ' ');
Words = Data{1};

Now I do not understand what "example1".."examplem" means. If these are the lines of the file:

% EDITED: Count the number of occurences
M = zeros(length(Words), length(Lines));
for i = 1:m
  Data = textscan(Lines{i}, '%s', 'Delimiter', ' ');
  lineWords = Data{1};
  M(:, i) = cellfun(@(x) sum(strcmp(x, LineWords)), Words);
end
M = transpose(M);

[Anneke]

Hi, thanks for your fast reply!

example1, example2, etc. are indeed the lines in my txt file, I should have named these line1, line2, etc.

The program works great now, only one thing left I need to do and that is to count the number of times a word appears in a line. Do you know a fast way to do this?

[Jan]

I've inserted the counting. I assume, you need a UNIQUE for the Words also.