How to draw 3D XYZ plot with a matrix?

Question

ruik zhang 2018-8-4

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/413567-how-to-draw-3d-xyz-plot-with-a-matrix

回答： ruik zhang 2018-8-5

采纳的回答： jonas

Hello, I have a 3D matrix (x, y ,z) such as:

38 70 0;

42 70 2;

42 72 4;

45 71 -2;

43 75 3

I want to draw a 3D XYZ plot as shown in the fig attached,each two neighbour points are connected with an arrow line. The color of the line between each two points is related to the index of the end point. Could you please help me with this? It is appreciated!

Ruik

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Answer 1

jonas 2018-8-5

1
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https://ww2.mathworks.cn/matlabcentral/answers/413567-how-to-draw-3d-xyz-plot-with-a-matrix#answer_331649

编辑：jonas 2018-8-5

在 MATLAB Online 中打开

I stitched this together using quiver3. Possibly a bit buggy.

%%Start point coordinates
A=[38 70 0;
42 70 2;
42 72 4;
45 71 -2;
43 75 3]
%%Length of arrows
B=[diff(A);0 0 0]
%%Plot
figure;hold on
cm=colormap(jet(length(A)-1));
colorbar(gca,'ticks',1:length(A))
caxis([1 length(A)])
for i=1:length(A)-1
s=sqrt(sum(B(i,:).^2)); %Equally sized arrow heads
%s=.3 %Uncomment for scaled arrow heads  
h(i)=quiver3(A(i,1),A(i,2),A(i,3),B(i,1),B(i,2),B(i,3),1,'maxheadsize',1.5/s)
h(i).Color=cm(i,:);
end
box on
grid on
view(3)
set(h,'linewidth',2)