Chris - do you have to do this for multiple files, or is it just the one file? It almost seems simpler to just use textscan to read in the numeric data (skipping the two text/header lines) and then add the number to the second column. Something like
fid = fopen('yourTextFile.txt');
if fid > 0
C = textscan(fid,'%f %f %f','HeaderLines',2);
C{2} = C{2} + 234.021;
fclose(fid);
end
In the above, C is a cell array of size three, one element for each column of data read in from the file. We take the second one and add the 234.021 to it, close the file and we are done.
If you have multiple files, does the second line always have the same format of
ABCD to EFG Solution 1+ 234.021 m
so that the number you are interested in is in between the + symbol and the m i.e. the last number in the string? If so, you could rework the above to
fid = fopen('yourTextFile.txt');
if fid > 0
% get the first line of text
str = fgetl(fid);
% get the second line of text
str = fgetl(fid);
% remove all characters that aren't numeric, period, dash (for negative) and space;
% and convert to numeric array
numericArray = str2num(regexprep(str,'[^0-9.\s-]',''));
% get the last value which will be added to the second column
if ~isempty(numericArray)
valToAdd = numericArray(end);
C = textscan(fid,'%f %f %f');
C{2} = C{2} + valToAdd;
end
fclose(fid);
end
Try either of the above and see what happens!
