isolate separate portions of a ASCII/TEXT FILE which have results for different time stamps

i have an ascii file which can be read as text file in matlab

this file contains a number of columns (say 10 or 11) with different names(headers given in the file.

these columns are produced after different time intervals.

so basically, i have a different set of results in different separate sections of the file

What i WANT?? : I want to write these sections into separate files and read each of these columns in order to plot graphs etc.

plz help me guys

thanks in advance

[Walter Roberson]

regexp() to delete the first line. Then regexp() 'ZONE', 'split' . After that you can textscan() each block

[shadman khan]

I tried this code. But not getting the result.

fileID = fopen('Plot_Copy','r');
 temp2 = regexp(fileread('Plot_Copy'), 'ZONE', 'split');
C = textscan(fileID,'%f',34);
fclose(fileID);

Can you please help me for using textscan?

Answer 1

[Walter Roberson]

filename = 'Plot_Data_Elem.txt'; 

fileblocks = regexp(fileread(filename), 'ZONE', 'split');
 nblocks = length(fileblocks);
 vstr = regexprep(fileblocks{1}, 'Variables\s*=\s*', '', 'once');
 vstr = regexprep(vstr, '\s*$', '', 'once');   %in case of trailing whitespace
 vars = regexp(vstr, '\s+', 'split');
 nvars = length(vars);
 fmt = repmat('%f', 1, nvars);
 
 C = cell(nblocks-1,1);
 for K = 2 : nblocks
     C{K-1} = array2table(cell2mat(textscan(fileblocks{K}, fmt, 'HeaderLines', 1, 'CollectOutput', true)), 'VariableNames', vars);
 end
 

With that example file, this gives an 8 x 1 cell array, each entry of which is a 12 x 16 table object with each column labeled according to the variables mentioned in the first line of the input file.

[shadman khan]

my goodness

this couldn't have been done in a better way

all i need o now, irs to store eah of this 12x16 table object into a different file and i am done...

thanks Robert