That's a very nicely organized file in the sections...you just have to know what the section headers are and which you want...
A very crude outline of one way to do for a particular case--
fid=fopen('DYNA_10.txt'); % open the file
l=fgetl(fid); % get first line, initialize buffer
while ~strcmp(l,'DISPLACEMENTS') % find the section header
l=strtrim(fgetl(fid));
if ~ischar(l),error('Section not found'),break,end % break infinite loop if something goes wrong
end
displ=cell2mat(textscan(fid,repmat('%f',1,6),'HeaderLines',5,'CollectOutput',1)); % return the data in array
fid=fclose(fid); % close file
This returns
>> whos displ
Name Size Bytes Class Attributes
displ 443x6 21264 double
>> displ(1:5,:)
ans =
1.0000 0 0 2.0000 0 0
3.0000 0 0 4.0000 0 0
5.0000 -0.0030 -0.0020 6.0000 -0.0030 -0.0020
7.0000 -0.0020 -0.0050 8.0000 -0.0010 -0.0070
9.0000 -0.0020 -0.0010 10.0000 -0.0030 -0.0040
>> displ(end,:)
ans =
885.0000 0.3770 -1.8090 NaN NaN NaN
>>
Obviously you can return whatever particular node you wish by lookup into the first/fourth columns for a value or by computing the actual line number/location from the fact there are two nodes/record in the file. (Of course, you could make that calculation after finding the header record and compute the 'headerlines' value and only read a given record, too).
For general use, wrap the above logic in a function that can be called with a specific section ID string and save a lookup table of what the format is within each section (or dispatch a section-specific function for each section in a CASE construct or the like).
It would then be trivial to simply wrap all that in a loop on the files returned by a dir over the appropariate wildcard string like
d=dir(fullfile(workingdirectory,'DYN*.txt'));
for i=1:numel(d)
...
end
