How to replace a single word in a string with multiple row string?

Hello,

I am trying to replace a single word/token in a string variable with a string containing multiple rows of words. I get the following error using regexprep function :

Error using regexprep The 'REPLACE' input must be a one-dimensional array of char or cell arrays of strings.

I tried using strrep function as well. I get the following error for it :

Error using strrep Input strings must have one row.

A = strrep(B,'Keyword',C);

A = regexprep(B,'Keyword',C);

I am trying to replace Keyword in String B with C. C has multiple rows of words in it.

I searched the forum for similar questions. Did not find any.

How do i prevent this error? Please help.

[Guillaume]

What are you expecting as an output? Several strings, each with one of your replacement word?

Also is your C a 2D char array or a cell array of strings?

It would be best if you gave an example of values for your A, B and C

Answer 1

[Guillaume]

This is possibly what you want:

B = 'Some string with a Keyword in it';
C = {'foo', 'bar', 'baz'};
A = cellfun(@(rep) strrep(B, 'Keyword', rep), C, 'UniformOutput', false)

If your C is a 2D char array and you also want a 2D char array as an output

B = 'Some string with a Keyword in it';
C = ['foo';'bar';'baz'];
A = cell2mat(cellfun(@(rep) strrep(B, 'Keyword', rep), num2cell(C, 2), 'UniformOutput', false))

[Math]

Hello Guilaume,

Yes C is a 2D char array and i also want a 2D char array as an output.

However, I want the output as:

Some string with a foo bar baz in it.

B can also a 2D char array in my case. I was able to replace Keyword in B with single token. But i am not able to replace Keyword with 2D char array.

[Guillaume]

It is much simpler to work with cell arrays of strings than 2D char arrays. Most string functions will happily work on multiple strings as long as they're in a cell array. A cell array has the added advantage that your strings don't have to be all the same length.

Use num2cell to convert a 2D array to cell, and cell2mat to convert back.

Anyway

B=['A string with Keyword'; 'Another Keyword abcde'];
C=['foo';'bar';'baz'];

Bascell = num2cell(B, 2);
Cascell = num2cell(C, 2);
Aascell = strrep(Bascell, 'Keyword', strjoin(Cascell));
A = cell2mat(Aascell)

Answer 2

[Math]

Some string with foobarbaz in it. as output is also acceptable. I thought of concatenating C. But it's size is not fixed for different cases.