Extracting data from an unformatted text file

Hi, I want to extract certain values from an unformatted text file, in the example I use the regexp function entering the format of the data I want to extract.

(file format)
...
<<<<< Function evaluation summary (I1): 582 total (581 new, 1 duplicate)
<<<<< Best parameters          =
                                    31 x1
                                     7 x2
                                    87 x3
                                    83 x4
                                     3 x5
                                    63 x6
                                     5 x7
                                    72 x8
                                    12 x9
                                    51 x10
                                    67 x11
                                    82 x12
                                    81 x13
                                    35 x14
                                    52 x15
                                    13 x16
                                    32 x17
                                    19 x18
                                    73 x19
                                    24 x20
                                    50 x21
                                    71 x22
                                    61 x23
                                    22 x24
                                    23 x25
                                    27 x26
                                    58 x27
                                    77 x28
                                     1 x29
<<<<< Best objective function  =
                      1.0119441809e+00
... 

The output does not work because it extracts undesired values.

str = fileread('OUTPUT.out');
expression = '\d*\s\w\w' ;
regexp = regexp(str,expression, 'match');

How can I extract the values with the presented format?

[Mathieu NOE]

hello

what do you want to extract and in which format ?

[Rik]

You should rename your file to txt and attach it. That way, we can taylor our code to your exact file format.