How to display matlab content into columns using fprintf

Question

I'm looking to display data in two columns. The first column will have a movies name and the second a rating out of 5. I want the data to be displayed in such a way that the ratings, regardless of the length of the movie title all display in on vertical line. I currently have:

Toy Story (1995) :   4
GoldenEye (1995) :   3
Seven (Se7en) (1995) :   4
Braveheart (1995) :      1
Bad Boys (1995) :    3
Batman Forever (1995) :      2
Star Wars (1977) :   5
Shawshank Redemption, The (1994) :   5
Ace Ventura: Pet Detective (1994) :      3
Aladdin (1992) :     3

I'm using the following code:

fprintf('%s : \t %d\n', movieList{i},user_ratings(i));

where the above line is obviously in a loop. I tried using a tab to see if things would line up but clearly not much luck. Any ideas on how I could achieve this?

Divakar · Accepted Answer · 2014-05-21 20:18:49Z

3

If you would like to keep things simple and your loop, you may try this -

lens = cellfun(@numel,movieList);
pdlens = max(lens) - lens;
for k = 1:numel(movieList)
    fprintf('%s%s :\t%d\n', movieList{k},repmat(' ',1,pdlens(k)),user_ratings(k))
end

Output -

Toy Story (1995)                  : 4
GoldenEye (1995)                  : 3
Seven (Se7en) (1995)              : 4
Braveheart (1995)                 : 1
Bad Boys (1995)                   : 3
Batman Forever (1995)             : 2
Star Wars (1977)                  : 5
Shawshank Redemption, The (1994)  : 5
Ace Ventura: Pet Detective (1994) : 3
Aladdin (1992)                    : 3

Alternate solution based on arrayfun -

spc = repmat(' ',numel(movieList),1)
pdc = arrayfun(@(x,t) repmat(x,1,t),spc,pdlens,'uni',0) %//pdlens is from earlier code
spcell = repmat(cellstr({'   '}),numel(movieList),1)
out = strcat(movieList,pdc,':',spcell,num2str(user_ratings')) %//'
char(out) %// Display the text

edited May 21, 2014 at 20:18

answered May 21, 2014 at 19:42

Divakar

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1 Comment

Divakar Over a year ago

@AlexandreBizeau Thanks! I am sure there are alternative solutions to this!

Vuwox · Accepted Answer · 2014-05-21 19:49:44Z

0

You can try this, it really not beautifull but :

maxVal = 0
[~,nbMovie] = size(movieList);
for i = 1:nbMovie
    maxVal = max(maxVal,length(movieList{i}))
end

wordPrint = strcat('%',int2str(maxVal),'s');
totalPrint = strcat(wordPrint,' : %f\n');

for i = 1:nbMovie
   fprintf(totalPrint ,movieList{i},user_ratings(i));
end

EDIT

And for a left align for the word use the symbol '-' before the number, like this :

wordPrint = strcat('%-',int2str(maxVal),'s');

edited May 21, 2014 at 19:49

answered May 21, 2014 at 19:33

Vuwox

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