Plotting HSP in Matlab

I am trying to recreate a Hansen solubility sphere using Matlab. I can plot the solute sphere using:

[x,y,z] = sphere;

radius = 7.1;

x = x * radius;

y = y * radius;

z = z * radius;

x_offset = 17.0;

y_offset = 9.8;

z_offset = 9.4;

surf(x+x_offset,y+y_offset,z+z_offset)

surf(x,y,z,'FaceAlpha',0.3)

shading("interp")

colormap("summer")

xlabel('\delta_{d}', 'FontSize', 20);

ylabel('\delta_{p}', 'FontSize', 20);

zlabel('\delta_{h}', 'FontSize', 20);

axis equal;

However, I now need to be able to superimpose a 3D scatter plot on the same plot as the sphere. Any suggestions?

Answer 1

[Star Strider]

Use the hold function —

    [x,y,z] = sphere;
    radius = 7.1;
    x = x * radius;
    y = y * radius;
    z = z * radius;
    x_offset = 17.0;
    y_offset = 9.8;
    z_offset = 9.4;
    
    figure
    surf(x+x_offset,y+y_offset,z+z_offset)
    hold on
    surf(x,y,z,'FaceAlpha',0.3)
    hold off
    shading("interp")
    colormap("summer")
    xlabel('\delta_{d}', 'FontSize', 20);
    ylabel('\delta_{p}', 'FontSize', 20);
    zlabel('\delta_{h}', 'FontSize', 20);
    axis equal;

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[Peter]

Thanks - I'd tried that before but assumed I was wrong because of the appearance of two spheres - almost like the lower one is a shadow. Any idea how I can remove that so that only a single 3D sphere shows (plus the scatter plot when that's introduced).

[Star Strider]

My pleasure!

I’m lost. I thought you wanted to plot both of them. If you don’t want the second sphere, don’t plot it, or change its offsets to plot it in a different location. If you want to change the axes limits, use xlim and its friends or axis to set all the limits at once.

For the scatter plot, use hold and the scatter3 function.

[Peter]

Thanks - et voilla. Some tinkering to do with marker colour/shape, but it's not a bad approximation of what we get with bespoke sofware.

[Star Strider]

My pleasure!

If my Answer helped you solve your problem, please Accept it!

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