MATLAB: I have a char data. I want to extract first column from this char data.

Question

%for example,

out1 =

p.11 109 820 109

p.12 503 159 117

p.13 234 207 151

p.14 139 134 215

Name Size Bytes Class Attributes

 out1           1x188              376  char      global

% what I want is that extract the first column if we think as a matrix. (p.11,p.12,p.13,p.14) %also, the first column would include only numbers so I need the codes which works both number and number-character mixed.

thanks in advance

Answer 1

If out1 is your string:

pgs = char(regexp(out1,'p\.\d+','match'));

Note that this requires out1 be a 1xn array, which it looks like it is. The reason for the char command is that regexp returns a cell array of matching strings. If a cell array works for you, just remove the char function.