How to split text files into many text files?

Hi everyone. Can anyone help us to split the data into many files. The example data is attached.

This is how the data look like..

Lat:     6.4931, Lon:    99.6067, Parameter: z(m)  <--This is the start line
Depth (m):      22.45
Constituents included: m2  s2  k1  o1  
Time start: 00:00,  1. 1.1993 
Time step (min):      60.00
Time Series length (hours):236664
01-Jan-1993 00:00:00    -0.0946
01-Jan-1993 01:00:00    -0.3369
01-Jan-1993 02:00:00    -0.5110
... More Data
31-Dec-1993 23:59:59    -1.1673    <-- This is the last line

Lat:     6.3933, Lon:    99.6067, Parameter: z(m) <--- Another start line for different coordinate
Depth (m):      30.74
Constituents included: m2  s2  k1  o1  
Time start: 00:00,  1. 1.1993 
Time step (min):      60.00
Time Series length (hours):236664
01-Jan-1993 00:00:00    -0.1017
01-Jan-1993 01:00:00    -0.3324
01-Jan-1993 02:00:00    -0.4965
... More Data
31-Dec-1993 23:59:59    -1.1284  <--Another last line

Answer 1

[Rik]

The code below assumes each file ends with an empty line. You could also search for 'Lat:' instead to determine the beginning of a new file.

You can get the readfile function from the FEX or through the AddOn-manager (R2017a or later).

data=readfile('https://www.mathworks.com/matlabcentral/answers/uploaded_files/351353/Example.txt');
lastlineoffile=find(cellfun('isempty',data));
lastlineoffile=[0;unique([lastlineoffile;numel(data)])];%add last line just to make sure
for n=1:(numel(lastlineoffile)-1)
    currentfile=data((lastlineoffile(n)+1):lastlineoffile(n+1));
    fid=fopen(sprintf('aa__file%03d.txt',n),'w');
    fprintf(fid,'%s\n',currentfile{:});
    fclose(fid);
end

[hanif hamden]

Thank you Sir! The script works well.

[Rik]

You're welcome.

[hanif hamden]

Btw sir, I shall be gratefull if you could help me to solve another matter.

https://www.mathworks.com/matlabcentral/answers/584252-how-to-read-the-text-file-start-from-7th-line-and-convert-the-date-into-datenum