Plot vector in a defined line in 3D graph

Question

Arne Kähler 2022-7-4

0
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https://ww2.mathworks.cn/matlabcentral/answers/1753225-plot-vector-in-a-defined-line-in-3d-graph

编辑： Binaya 2023-9-29

在 MATLAB Online 中打开

Hi,

I have a n-by-3 matrix independent of x or y but would like to plot each column with n points as 3D plot along a line.

It should basically look like this,

would be the y-coordinate limit,

the x-coordinate. The three bold lines are the lines along which I'd like to plot the values of my matrix, so column 1 would be n points along line 1, column 2 n points along line 2, column 3 line 3 and their values should be shown in the z-coordinate.I know every value as well as any angle shown in the picture, but can't think of a proper way to display my data along the lines, as well as tilt the y-coordinate by the angle gamma.

The Matrix is independent from x, y and γ, except for the defined position of each value and I'd like to avoid recalculating the position of every single value.

My code for the plot so far:

%variables from prior code

n = 31; m = 3; b_veff = 22; g_valpha = 14; S_SmY = randi(5,n,m ); S_SrY = randi(5,n,m ); S_StY = randi(5,n,m );

%grid for x- and y-axis; y axis should be tilted by angle gamma

[x,y] = meshgrid(0:b_veff/(n-1):b_veff,0:g_valpha/2:g_valpha);

%for-loop for three different cases, unimportant for question

for i = 1 : m

z=[S_SrY(:,i) S_SmY(:,i) S_StY(:,i)]'; % each S_S*Y should be plotted along one line as shown above

figure;

surf(x,y,z)

%%unimportant for issue

ax = gca;

ax.XLabel.String = 'face width';

ax.YLabel.String = 'direction of contact line';

ax.ZLabel.String = 'Safety factor';

caxis([0 3])

title('Local Safety factor, Load Level ',num2str(i));

cmap = interp1(0:1,[1 0 0 ;0 1 0],linspace(0,1,256));

axis equal

colormap(cmap)

colorbar

end

As you can see, I just plotted the columns as three lines parallel to the y-axis, which is no Use to me, but I'm at the end of my wits, so I am grateful for any help whatsoever.

Thank you in advance