Extract Text From Nastran f06 file

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Nicolas Jalbert
Nicolas Jalbert 2017-11-16
评论： KSSV 2017-11-17
Hi all,
I am looking to extract specific data from a Nastran f06 file (it opens as a text file in Notepad++).
What I want to do:
1- Locate the title "MODAL PARTICIPATION FACTORS" (here in the example it is at lign 37, but will vary depending on the analysis... therefore why I want to locate the title).
2- Locate the end of the table. It ends with a blank entry followed by a "Total" header. (here in the example at lign 254)
3- Extract all the data into one matrix. It starts 5 entry lines after the "Participation Factors" title, this is a fixed feature in all .f06 analysis. So here it would be a 211x8 type of matrix. The columns being "Mode N°" "Frequency" "T1" .. to .."R3"
Would you guys have any idea how to do this? Thanks in advance. I attach the file to this post.
Nicolas

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KSSV
KSSV 2017-11-16
fid = fopen('NASTRAN_file.txt') ;
S = textscan(fid,'%s','delimiter','\n') ;
S = S{1} ;
fclose(fid) ;
str1 = 'MODAL PARTICIPATION FACTORS' ;
str2 = 'TOTAL' ;
idx1 = find(contains(S,str1))
idx2 = find(contains(S,str2))
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Nicolas Jalbert
Nicolas Jalbert 2017-11-16
Thanks that would be great! An other problem I have now is that even after cell2mat for a specific line of data, there is no division between the values.. therefore I can't manipulate them or use them in specific operations afterwards.
I'm trying to figure out a way
KSSV
KSSV 2017-11-17
fid = fopen('NASTRAN_file.txt','r') ;
tline = fgetl(fid);
iwant = zeros([],8) ;
count = 0 ;
while ischar(tline)
tline = fgetl(fid);
if ~isempty(str2num(tline))
count = count+1 ;
iwant(count,:) = str2num(tline) ;
end
if contains(tline,'TOTAL')
break
end
end
fclose(fid) ;

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