fprintf issues in writing and then reading

1
votes

I'm trying to export a 2D matrix containing nodes coordinates of an Anys mesh (*.node), in Matlab. In this regard, I'm simply using fopen and fprintf commands in Matlab. For example:

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fid = fopen('c:\new_nodes.node', 'wt'); fprintf(fid,'%3d %10.4e %10.4e %19.4e\n',new_nodes'); % new_nodes : my 2D matrix

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The content of generated file is okay but I cannot read it in Ansys, and when I open this file (e.g., new_nodes.node) in Notepad++ and do "save as", it becomes readable!!! It would be great if you could help me to find out whats the problem the Matlab code and how can I solve this problem... Thanks in advance,

1
matlabprintfnotepad++fopen
What error do you get? – Sardar Usama
Using \r instead of \n may help. – rahnema1
Could not load FE model! – ir0098
rahnema1, unfortunately, it didn't work... – ir0098
Try using only 'w' instead of 'wt' in the fopen function – Sardar Usama

1 Answers

0
votes

Probably an error in the line brakes.

Open the file as w instead of wt

When you add the t matlab adds a \r after your \n

[edit @ 17:22]

fid = fopen('new_nodes.node', 'wt');
fprintf(fid,'%3d %10.4e %10.4e %19.4e\n',[pi 2.1 exp(1) 2.5]);
fclose(fid);
fid = fopen('new_nodes.node','r');
B = fread(fid,inf,'*uint8');
fclose(fid);

Now B contains 56 values that sum to 2664. What do you get?

If I save it ase new_nodes2.node using notepad++ I get exactly the same values for B.