reading text fils with data importing

I have a long text file with data. There are "epochs" starting with EP and "information" i few next lines like that:

EP 00 00 00

G03

F17

D32

EP 00 00 30

G01

F04

D31

G03

H34

EP 00 01 00

B34

K05

L22

H34

H11

G11

EP 00 01 30

H90

G03

EP...

I need to read all epochs and if in a given epoch there will be a line with information of my choice, containing, for example "G03" I need confirmation this e.g. as "1" and if these information is not at epoch confirmation as e.g. "0". The are two problems from my point of view: there could be different number of lines with "information" in particular epochs and "information" of my choice may lie in any line.

Thank you in advance for any suggestions

Answer 1

[Stephen23]

It would be much better if you uploaded a sample data file by clicking the paperclip button.

In lieu of that I created my own demo data file:

str = fileread('myfile.txt')

str = 
    'EP 00 00 00
     G03
     F17
     D32
     EP 00 00 30
     G01
     F04
     D31
     G03
     H34
     EP 00 01 00
     B34
     K05
     L22
     H34
     H11
     G11
     EP 00 01 30
     H90
     G03'

tkn = regexp(str,'EP(\s+\d+){3}(\s+[A-Z]\d+)+','tokens');
tkn = vertcat(tkn{:});
spl = regexp(tkn(:,2),'\w+','match');
uni = unique([spl{:}]);
drn = duration(sscanf([tkn{:,1}],'%u',[3,Inf]).')

drn = 4x1 duration array
   00:00:00
   00:00:30
   00:01:00
   00:01:30

fnh = @(t)contains(uni,t);
tmp = cellfun(fnh,spl,'uni',0);
tmp = vertcat(tmp{:});
tbl = array2timetable(tmp, 'RowTimes',drn, 'VariableNames',uni)

tbl = 4x13 timetable
      Time       B34      D31      D32      F04      F17      G01      G03      G11      H11      H34      H90      K05      L22 
    ________    _____    _____    _____    _____    _____    _____    _____    _____    _____    _____    _____    _____    _____

    00:00:00    false    false    true     false    true     false    true     false    false    false    false    false    false
    00:00:30    false    true     false    true     false    true     true     false    false    true     false    false    false
    00:01:00    true     false    false    false    false    false    false    true     true     true     false    true     true 
    00:01:30    false    false    false    false    false    false    true     false    false    false    true     false    false

[UWM]

Thank you very much for help!