matlab get the value of char

Question

from MATLAB command line , when I type my variable a , it gives me values as expected :

a =


            value_1
            value_2

and I wou

Answer 1

How are you reading in the xml file? If you're using xmlread then MatLab adds a lot of white space in there for you and could be the cause of your problems.

http://www.mathworks.com/matlabcentral/fileexchange/28518-xml2struct

This will put your xml file into a struct where you should be able to access the elements in the array.

Answer 2

You seem to have an somewhat inconvenient character array. You can convert this array in a more manageable form by doing something like what @Richante said:

strings = strread(a, '%s', 'delimiter', sprintf('\n'));

Then you can reference to toto and titi by

>> b = strings{2}
b = 
toto

>> c = strings{3}
c = 
titi

Note that strings{1} is empty, since a starts with a newline character. Note also that you don't need a strtrim -- that is taken care of by strread already. You can circumvent the initial newlines by doing

strings = strread(a(2:end), '%s', 'delimiter', sprintf('\n'));

but I'd only do that if the first newline is consistently there for all cases. I'd much rather do

strings = strread(a, '%s', 'delimiter', sprintf('\n'));
strings = strings(~cellfun('isempty', strings))

Finally, if you'd rather use textscan instead of strread, you need to do 1 extra step:

strings = textscan(a, '%s', 'delimiter', sprintf('\n'));
strings = [strings{1}(2:end)];

Answer 3

Perhaps a is a string with a newline in it. To make two separate variables, try:

values = strtrim(strread(a, '%s', 'delimiter', sprintf('\n')))

strread will split a into separate lines, and strtrim will remove leading/trailing whitespace. Then you can access the lines using

values{1}
values{2}

(note that you must use curly brackets since this is a cell array of strings).