3D plot matlab from X Y Z data and integrating a slice function
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Denxybel Montinola
il 22 Gen 2021
Commentato: Walter Roberson
il 6 Feb 2021
Hi I have a data formated in CSV file (unfortunately I cannot upload it cause it exceeds 5MB even if I compressed the file). However, my data is composed of 3 coordinates system XYZ which is assigned to a certain energy.
e.g.
X Y Z Energy
0 0 1 48
having a dimension of 100 x 100 x 100
I tried this following code
###
Array=csvread('processedata.csv');
X = Array(:, 1);
Y = Array(:, 2);
Z = Array(:, 3);
data = Array(:, 4);
colormap turbo
s=scatter3(X,Y,Z,20,data,'filled','s','MarkerEdgeColor','none') % draw the scatter plot
alpha(s,.1)
ax = gca;
ax.XDir = 'reverse';
%view(-31,14)
% create and label the colorbar
cb = colorbar;
caxis([0 38.1])
xlabel('X')
ylabel('Y')
zlabel('Z')
cb.Label.String = 'Dose';
###
and the output is this
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/496293/image.jpeg)
but I wanted to show like this instead with a grid box and slices so that could see what is happeninng inside the box
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/496298/image.png)
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Walter Roberson
il 22 Gen 2021
If you have a regular grid of x y z points, then pull out the columns and reshape() and possibly permute() into an appropriate sized 3D grid of energy.
If the points are not regular, then pull out min and max x y z and linspace() vectors and ndgrid() to construct matrices X Y Z of coordinates to approximate the data at. Then scatteredInterpolant(x, y, z, Energy) and evaluate the resulting function at X Y Z to get a grid of energy.
Either way, you now have a 3D grid of energy that you can use slice() with.
5 Commenti
Walter Roberson
il 6 Feb 2021
I think you might need to project your 4D data (three independent, one dependent) into 3D so that you have a chance of seeing continuous changes in a recognizable way. isosurfaces look just too irregular to make sense out of.
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