MATLAB - concatenating items within a cell array

Question

I have a cell array:

X =

{1x2} {1x2}


X{1} = '' A

X{1 2} = 10 113

I wish to concatenate the sub cells in such a way that

 Y = 10 113A

Thanks, S :-)

SCFrench · Accepted Answer · 2010-07-05 15:12:23Z

1

y = cellfun(@(a, b) sprintf('%d%s', b, a), x{1}, x{2}, 'UniformOutput', false);

answered Jul 5, 2010 at 15:12

SCFrench

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Comments

gnovice · Accepted Answer · 2010-07-06 12:49:28Z

1

Assuming you have this cell array for X:

X = {{'' 'A'} {10 113}};

You can create your array Y using INT2STR and STRCAT:

Y = strcat(int2str([X{2}{:}].'),X{1}.').';

edited Jul 6, 2010 at 12:49

answered Jul 5, 2010 at 17:06

gnovice

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Superbest · Accepted Answer · 2012-09-25 06:55:41Z

0

The Matlab File Exchange has a function written to do precisely this. uniqueRowsCA

edited Sep 25, 2012 at 6:55

answered Sep 25, 2012 at 6:49

Superbest

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2 Comments

Jav_Rock Over a year ago

While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes.

Superbest Over a year ago

I added some info to help find the link should it change (unlikely with the MFE). Not sure what the essential parts of this would be.

Darren J. Fitzpatrick · Accepted Answer · 2010-07-05 14:13:23Z

-1

For those interested, I think I found a solution.

I redefined my cell array as:

X1 =

{1x2}

X1 = '' 'A'

X2 = 

[1x2 double]

X2 = 10 113

I then applied this for loop:

NUM = [];

for i = 1:size(X2')              #take the transpose of X2
    p = num2str(X2(i));          #convert doubles to strings
    str = STRCAT(p, X1(i));      #concatenate
    NUM = [NUM str];             #add to another array
end


NUM = '10' '113A'

I am sure there is a more efficient way but MATLAB and I will probably never be on good terms. Sometimes quick and dirty is sufficient!

Cheers, S :-)

answered Jul 5, 2010 at 14:13

Darren J. Fitzpatrick

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