How can I plot the exported ASCII file from fluent?
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Hello,
I have exported the data (ASCII) of a plane from fluent. I want plot the data in MATLAB. It would be great if you can give an idea or share any code to do that.
In that file the data are as following:
nodenumber, x-coordinate, y-coordinate, z-coordinate, phase-2-vof
1, 2.549813583E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
2, 2.569617473E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
3, 2.609225254E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
4, 2.648833034E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
5, 2.688440814E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
6, 2.728048594E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
7, 2.767656374E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
8, 2.807264154E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
9, 2.846871934E+00, 3.150000000E+00,-2.192098192E-08, 0.000000000E+00
0 Comments
Accepted Answer
Rik
on 12 Jun 2020
The code below simply ignores the z-values, since there only seems to be a single line in the yz plane that was actually considered.
data = readtable('vof_data2.txt');
x = data.x_coordinate;
y = data.y_coordinate;
z = data.z_coordinate;
p2v = data.phase_2_vof;
resolution=[300 300];
figure(1),clf(1)
subplot(1,2,1)
plot3(x,y,p2v,'.')
xlabel('x')
ylabel('y')
zlabel('phase value')
v=[];[v(1),v(2)]=view(180,90);
title('point cloud')
axis tight
axlim=axis;
%ignore z for now
F=scatteredInterpolant(x,y,p2v,'linear','none');
[X,Y]=ndgrid(linspace(min(x),max(x),resolution(1)),linspace(min(y),max(y),resolution(2)));
Z=F(X,Y);
subplot(1,2,2)
surf(X,Y,Z,'EdgeColor','none')
view(v(1),v(2))
axis(axlim)
6 Comments
Rik
on 24 May 2022
It can probably be done. First you need to load the data, then transform it into a format a display function can understand. The answer above interpolates the data to a surface, but that might not be required for your application.
Please post a separate question, in which you attach an example file, give an outline of what you want to achieve, and show what you have tried so far. Feel free to post a link here.
Mohamad Zulhisyam
on 25 May 2022
Here is the link for the question https://www.mathworks.com/matlabcentral/answers/1726920-how-can-i-display-4th-dimensional-plot-using-ascii-data-from-ansys-fluent
Thank you.
More Answers (1)
Ameer Hamza
on 12 Jun 2020
If this is stored in a .txt file, then you can use readtable like this
data = readtable('test.txt');
x = data.x_coordinate;
y = data.y_coordinate;
z = data.z_coordinate;
p2v = data.phase_2_vof;
12 Comments
Rik
on 12 Jun 2020
How would you do it in words? What is the meaning of your image? What do the dimensions and the colors represent?
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