other problems with data acquisition from MATLAB

Question

3 days ago I asked for help in acquiring data from a text file generated by a C program (. Exe). Thanks to the programmer "second" I solved the problem but yesterday I discovered that the output file is more complex than I had expected. I also ask you help.

The file output is:

V|0|0|0|t|0|1|1|4|11|T4|H13||||||||||||

P|40|0.01|10|1|1|0|40|1|1|1||1|*||0|0|0

*|A1|A1|A7|A16|F|F|F|F|F|F|||||||||||||

*|codserv|area|codice|nome|tnom|tmin|tmax|pc|qc|susc|||||||

*|||||kV|kV|kV|MW|MVAR|S||||||||||||

N|I|1|N01|N01|132|125.4|138.6|0|0||||||||

N|I|1|N02|N02|20|19|21|0|0|||||||||||||

N|I|1|N03|N03|20|19|21|1.013532234|0.49087611||||||||

N|I|1|N04|N04|20|19|21|0.390791617|0.189269056||||||||

N|I|1|N05|N05|20|19|21|0.180634542|0.121387171||||||||

N|I|1|N06|N06|20|19|21|0.709472564|0.343613323||||||||

N|I|1|N07|N07|20|19|21|0.103495727|0.069549543||||||||

N|I|1|N08|N08|20|19|21|0.351712456|0.170342158||||||||

N|I|1|N09|N09|20|19|21|0.097697904|0.06565339||||||||

N|I|1|N10|N10|20|19|21|0.162165157|0.078540184||||||||

N|I|1|N11|N11|20|19|21|0|0||||||||

*|A1|A8|A7|A7|F|F|F|F||F||F

*|plev|area|codice|estr1|estr2|lung|imax|rsd|xsd|bsd1|bsd2|||

*|||||km|A|Ohm|Ohm||S||S

L|I|D10203|N02|N03|1.884|360|0.41071|0.207886957|3.19E-08|3.19E-08|||||||||||||

L|I|D10304|N03|N04|1.62|360|0.35316|0.1787563|3.19E-08|3.19E-08|||||||||||||

L|I|D10405|N04|N05|0.532|360|0.11598|0.058702686|3.19E-08|3.19E-08|||||||||||||

L|I|D10506|N05|N06|1.284|360|0.27991|0.14168092|3.19E-08|3.19E-08|||||||||||||

L|I|D10607|N06|N07|1.618|280|0.53879|0.194766124|3.00E-08|3.00E-08|||||||||||||

L|I|D10708|N07|N08|0.532|280|0.17716|0.064039294|3.00E-08|3.00E-08|||||||||||||

L|I|D10809|N08|N09|2|360|0.436|0.220686791|3.19E-08|3.19E-08|||||||||||||

L|I|D10910|N09|N10|2.4|360|0.5232|0.264824149|3.19E-08|3.19E-08||||||||||||

*|A1|A8|A7|A7|F|F|A1|F|F|F|F|F|F||F||F|||||||||||||||||||||||||

*|codserv|codice|estr1|estr2|vn1|vn2|nod1|varp|varm|np|Pb|rsd|xsd||bsd1||bsd2||||||||||||

*|||||kV|kV||%|%||MVA|%|%||%||%|||||

%%%%%------%%%%%------%%%% (read up to here)

other unnecessary data

The algorithm should:

1)skip the first 3 rows 2)skip fifth row

2)The fourth row (*|codserv|area|codice|nome|tnom|tmin|tmax|pc|qc|susc|||||||) save each string in a vector empty codeserv=[] area=[] codice=[] nome=[] tnom=[] tmin=[] tmax=[] pc=[] qc=[] susc=[]

3)Fill vettors with data and strings in the rows following the fourth

codeserv=[N N N N N N N N N N ....] 
area=[I I I I I I I ....] 
codice=[1 1 1 1 1 1 ...] 
nome=[N01 N02 N03 N04 N05 ] 
tnom=[N01 N02 N03 N04 N05] 
tmin=[132 20 20.....] 
tmax=[125.4 19 19 19 ....] 
pc=[138.6 21 21 21....] 
qc=[0 0 1.013532234 ....] 
susc=[0 0 0.49087611]

4)Do the same with the data starting with the letter L

read this line codice|estr1|estr2|lung|imax|rsd|xsd||bsd1||bsd2 and fill the vectors with values in the lines beginning with L

plev=[L L L L L L L ....] 
area=[I I I I I I I ....]
codice=[D10203 D10304 ...] 
estr1=[N02 N03 N04 N05  ...] 
estr2=[N03 N04 N05...] 
lung=[1.884 1,662 ....] 
imax=[360 360 .....] 
rsd=[number....] 
xsd=[number....] 
bsd1=[number ....] 
bsd2=[number....]

I tried to adapt the code of "second" (link http://stackoverflow.com/questions/3584003/acquire-data-from-text-files-in-matlab/3584406)

but given that the lines that start with N and L do not know how many I need to know how to read the first string and count the number N and L are.

read
[vp***NNNNNNNNNNNNNNNNNNNNNNNNLLLLLLLLLLLLLLLLLLLLL***] 

length N 

length L 

skip 1 2 3 line

read 4 line, create vector

codeserv=[N N N N N N N N N N ....] 
area=[I I I I I I I ....] 
codice=[1 1 1 1 1 1 ...] 
nome=[N01 N02 N03 N04 N05 ] 
tnom=[N01 N02 N03 N04 N05] 
tmin=[132 20 20.....] 
tmax=[125.4 19 19 19 ....] 
pc=[138.6 21 21 21....] 
qc=[0 0 1.013532234 ....] 
susc=[0 0 0.49087611]

skip length N +1 line

read *|plev|area|codice|estr1|estr2|lung|imax|rsd|xsd|bsd1|bsd2|||

skip length N +3 line

create

plev=[L L L L L L L ....] 
area=[I I I I I I I ....]
codice=[D10203 D10304 ...] 
estr1=[N02 N03 N04 N05  ...] 
estr2=[N03 N04 N05...] 
lung=[1.884 1,662 ....] 
imax=[360 360 .....] 
rsd=[number....] 
xsd=[number....] 
bsd1=[number ....] 
bsd2=[number....]

close the cycle 

I hope it is understandable thanks in advance for helping my biggest problem is counting the N and L in the text.

My email is [email protected]

Answer 1

function readtest2()

fid = fopen('test2.txt'); 

skipLines(3)
names1 = getNames;
skipLines(1);
nEntries1 = countPrefix('N');
data1 = textscan(fid,'%s %s %d %s %s %d %d %f %f %f %[| ]', nEntries1, 'delimiter','|');


skipLines(2)
names2 = getNames;
skipLines(1);
nEntries2 = countPrefix('L');
data2 = textscan(fid,'%s %s %s %s %s %f %d %f %f %f %f %[| ]', nEntries2, 'delimiter','|');

fclose(fid);

getData(data1, names1);
getData(data2, names2);



function names = getNames()
  names = fgetl(fid);
  names = textscan(names,'%s','delimiter','|');
end

function getData(data, names)

  for i = 1:size(data,2)-1
    values = ( data{i}(1:end));
    if(iscell(values))
      values = cell2mat(values);
    end

    name = names{1}{i+1};

    % very basic error checking
    if(~strcmp(name, ''))

      %save the value in the calling work space
      assignin('base', name, values)
    end
  end

end


function skipLines(n)
  while(n > 0)
    fgetl(fid);
    n = n - 1;
  end
end

function n = countPrefix(prefix)
  pos = ftell(fid);

  n = 0;
  currLine = fgetl(fid);
  while(currLine(1) == prefix)
    currLine = fgetl(fid);
    n = n + 1;
  end
  fseek(fid, pos, 'bof');
end


end