How do i cut a string after an amount of values or a delimiter

Hey was hoping someone could help me out here.

I have a string lets say:

1 2 3 4 5 6; 7 8 9 10 11 12; 13 14 15 16 17 18

Now i want to make a new string that always cuts of after the first 5 values until it reaches the ;. So in this case I would get an output like

1 2 3 4 5

6

7 8 9 10 11

12

13 14 15 16 17

18

Any help would be appreciated...

Roger

[Jan]

"String" means a vector of type char in Matlab. Your data look like a matrix instead. Or do you mean:

   Str = '1 2 3 4 5 6; 7 8 9 10 11 12; 13 14 15 16 17 18'

?? Should the new "string" be a cell string or a string, which contains line break characters?

Answer 1

[Jos (10584)]

Here is a straighforward approach:

% data:
str = '1 2 3 4 5 6; 7 8 9 10 11 12; 13 14 15 16 17 18'
% engine:
ss = strread(str,'%s','delimiter',';') ;
C = {} ;
for k1=1:numel(ss),
   X = str2num(ss{k1}) ;
   nX = numel(X) ;
    for k2=1:5:nX
        C{end+1} = X(k2:min(k2+4,nX)) ;
    end   
end
% result:
C{:}

Answer 2

[Rogier]

sorry for the slow reaction, but thanks alot! If i can bother you again... how would you implement adding some text inbetween the breaks? like

stringnumber1

1 2 3 4 5

6

Text

7 8 9 10 11

12

Another line

13 14 15 16 17

18

Answer 3

[Jos (10584)]

Something along these lines, perhaps (untested!):

 % data:
  str = '1 2 3 4 5 6; 7 8 9 10 11 12; 13 14 15 16 17 18'
  TextToInsert = {'Text','Another line'}
  % engine:
  ss = strread(str,'%s','delimiter',';') ;
  C = {} ;
  t2i_counter = 1 ;
  for k1=1:numel(ss),
     X = str2num(ss{k1}) ;
     nX = numel(X) ;
      for k2=1:5:nX
          C{end+1} = X(k2:min(k2+4,nX)) ;
      end
      if t2i_counter < numel(TextToInsert)
          C(end+1) = TextToInsert(t2i_counter) ;
          t2i_counter = t2i_counter + 1 ;
      else
          C{end+1} = 'Default insert text' ;
      end
  end
  % result:
  C{:}

Answer 4

[Jan]

Str  = '1 2 3 4 5 6; 7 8 9 10 11 12; 13 14 15 16 17 18'
Str  = strrep(Str, ';', '');
CStr = regexp(Str, ' ', 'split');
NL   = char(10);

Header = {'stringnumber1', 'Text', 'Another line'};
CStr(1:6:end) = strcat(Header, NL, CStr(1:3:end));
CStr(5:6:end) = strcat(CStr(5:6:end), NL);
CStr(6:6:end) = strcat(CStr(6:6:end), NL);
fprintf('%s ', CStr{:})

(Not tested!)

Answer 5

[Rogier]

Allright then! So i now got the following and this works for what i want! Thanks alot

 TextToInsert = {'Txt','Another line', 'txt314',};
  % engine:
  ss = strread(L,'%s','delimiter',';');
  C = {};

C{1} = TextToInsert(1);
t2i_counter = 1;
for k1=1:numel(ss),
    X = str2num(ss{k1}) ;
    nX = numel(X) ;
    for k2=1:5:nX
        C{end+1} = X(k2:min(k2+4,nX)) ;
    end
    if t2i_counter < numel(TextToInsert);
        C{end+1} = TextToInsert(t2i_counter+1) ;
        t2i_counter = t2i_counter + 1;
    end
end
% result:
C = transpose(C);

Output of C gives me : {1x1 cell } {1x1 cell } {1x1 cell } {1x1 cell } {1x1 cell } {1x1 cell } {1x1 cell } [1x5 double] [ 6] {1x1 cell } [1x5 double] [ 12] {1x1 cell } [1x5 double] [ 18]

How would I write this into a text file? make a loop in which i convert the doubles with dlmwrite and do the cells with fprintf with the use of append?

EDIT: nvm guys i fixed it! thanks anyway