Plotting (x,y,z) and Pressure

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Kerby 2020-9-15

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评论： Kerby 2020-9-16

Hello, I am trying to create a 3D plot of an object with a pressure gradient associated with that object. I have a .txt file with 4 columns ( X, Y, Z, Pressure). In total the matrix is (85,000 x 4). I have tried looking at examples posted online and using MATLAB documentation but I am unable to successfully plot anything.

Thanks!

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Answer 1

BOB MATHEW SYJI 2020-9-15

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Hi, Hope this helps.This code visualises the data as scatter plot.

%dat is your data file
x = dat(:,1);                             
y = dat(:,2);                     
z = dat(:,3);                      
Pressure = dat(:,4);                   
scatter3(x,y,z,40,Pressure,'filled')    
ax = gca;
ax.XDir = 'reverse';
view(-31,14)
xlabel('x')
ylabel('y')
zlabel('z')
cb = colorbar;                                     
cb.Label.String = 'Pressure';