You will have to read the data in as text (with textscan, textread, dlmread, etc.) and convert to numeric.
Say you have read the data into a cell array with each number in a cell:
>> C = {'1,2345','3,14159','2,7183','1,4142','0,7071'}
C =
'1,2345' '3,14159' '2,7183' '1,4142' '0,7071'
Use strrep and str2double as follows:
>> x = str2double(strrep(C,',','.'))
x =
1.2345 3.1416 2.7183 1.4142 0.7071
For your example data from comments, you have a file "1.dat" formatted similarly to:
1,2 3,4
5,6 7,8
Here you have a space as a delimiter. By default, textscan uses whitespace as a delimiter, so that is fine. All you need to change below is the format specifier for the number of columns in your data by repeating %s for each column (e.g. here we need '%s%s' for two columns):
>> fid = fopen('1.dat','r');
>> C = textscan(fid,'%s%s')
C =
{2x1 cell} {2x1 cell}
>> fclose(fid);
The output of textscan is a cell array for each column delimited by whitespace. Combine the columns into a single cell array and run the commands to convert to numeric:
>> C = [C{:}]
C =
'1,2' '3,4'
'5,6' '7,8'
>> x = str2double(strrep(C,',','.'))
x =
1.2000 3.4000
5.6000 7.8000
