Question

I have a 4902x1 cell array which contains strings like Blue. or Green. I want to replace a number of these strings with another word. How can this be done in MATLAB?

For instance find

Blue.
Red. 
Green.

Replace with:

Colour.

Edit:

strArray = {'green.','black.'};
strMatch = strmatch(strArray, Book2);
strArray( strMatch(str,strArray)) = {'colour'};

Answer 1

If you have a cell array of strings (in your example strArray is not a cell array) I would define a small function to do the logic and then use cellfun:

function y = changecolor(str)
if( strcmpi('green',str) || strcmpi('blue',str) )
    y = 'color';
else
    y = str;
end

Then you can get your new array with:

changed_array = cellfun(@changecolor, strCellArray,'Uniform',false)