MATLAB-Scatter3函数可以绘制立体的三维散点图，但有时候需要在该立体图中分析X-Y-Z三者的关系，即1副图呈现出4个信息，XYZ综合信息、XY信息、XZ信息、YZ信息。现有的Scatter3无法实现该功能，本文可实现Scatter3三维立体散点图在三个平面的投影。
1、Scatter3绘制的三维图
1.1 数据准备
Archive_F=[0.214774524477043 0.212273603908085 0.230944359290959 0.0374815116088139 0.0182452239211796 0.0181402544535872 0.0286097030129952 0.0291005343959346 0.0262176369739111 0.0253447527583729 0.0260111045675729 0.0250223114927176 0.0261032663769370 0.0276281500305424 0.0140969568281942 0.0188863144511788 0.0188209081551797 0.0185554804662187 0.0176052081940137 0.0179264959541706 0.0156252777789427 0.0176869898054699 0.0204109147393797 0.0216470199083856 0.0277610565555296 0.0279784210419991 0.0281187965824094 0.0317743730425784 0.0325985585341534 0.0328298553066216 0.0315201631780755 0.0365102969754248 0.0213451933378615 0.0215197252871043 0.0226079894277912 0.0221926240318219 0.0842848264129697 0.0846707261971724 0.0845620905646032 0.0839180801525432 0.0835159619120784 0.0334572803934914 0.0334572803934914 0.0334572803934914 0.0334572803934914 0.0334572803934914 0.0334572803934914 0.0334572803934914 0.0334572803934914 0.0334572803934914;
21796362.7324385 21815792.5578712 21793841.0828533 21795027.1988607 21806953.0679037 21808482.8155332 21801267.9743108 21793925.6505310 21809434.0195484 21821797.9491900 21823908.4277654 21838648.9414791 21815473.0531030 21804315.1536796 21821797.9491900 21800385.8054059 21802219.5310726 21798346.3166414 21804853.8048828 21810330.5620670 21821797.9491900 21821797.9491900 21821797.9491900 21814973.6884657 21797865.4329235 21795635.6927668 21794736.7123120 21812330.3163034 21821797.9491900 21807191.9838235 21821797.9491900 21793823.4250554 21794425.4190836 21794480.4543669 21800580.8375374 21794136.9754014 21798138.6481655 21794836.5468471 21796213.8978320 21808547.2171858 21810001.1778232 21800904.2438615 21800904.2438615 21800904.2438615 21800904.2438615 21800904.2438615 21800904.2438615 21800904.2438615 21800904.2438615 21800904.2438615;
0.0593769116218121 0.0512152498436311 0.0872362290472495 0.218122250490201 0.456733335820898 0.543801572147437 0.276011604963051 0.292289511219630 0.260742229216441 0.277461461617152 0.271692257233797 0.279651968316828 0.282601831897452 0.417440226033212 0.577721624425776 0.500545504738645 0.472151645148244 0.561447918081684 0.570567658688782 0.508650391691957 0.428671704113855 0.401350361606390 0.378555037831306 0.375510867042196 0.391028808588133 0.391900963287216 0.394044104252370 0.237546557536312 0.184442867466795 0.212134012138314 0.217151204499710 0.278836690043773 0.521367079900366 0.510841980213136 0.490118064354543 0.522923459885113 0.0750851461477381 0.0777513944947410 0.0783669116953204 0.0797732520051353 0.0862377401800359 0.214406533528065 0.214406533528065 0.214406533528065 0.214406533528065 0.214406533528065 0.214406533528065 0.214406533528065 0.214406533528065 0.214406533528065];
1.2 绘制代码
scatter3(Archive_F(1,:),Archive_F(2,:),Archive_F(3,:),60,...
'MarkerEdgeColor','k',...
'MarkerFaceColor',[0 .75 .75])
axis ( [0 0.5 2.1*10^7 2.2*10^7 0 0.4])
% xmin xmax ymin ymax zmin zmax
xlabel('xA');
ylabel('yB');
zlabel('zC');
1.3 图形输出
图示可看出，绘制出来的图形仅可看到其立体图形，虽然手动旋转坐标轴可以看到三个平面的投影情况，但成图中并不能直接看到。
2、包含三个平面投影的三维图
2.1 绘制代码
以下代码可在三个子平面看到对应的投影情况，其他大小、形状、颜色等可自行调整或参考MATLAB官网Scatter3函数调整。
scatter3(Archive_F(1,:),Archive_F(2,:),Archive_F(3,:),60,...
'MarkerEdgeColor','k',...
'MarkerFaceColor',[0 .75 .75])
axis ( [0 0.5 2.1*10^7 2.2*10^7 0 0.4])
% xmin xmax ymin ymax zmin zmax
xlabel('xA');
ylabel('yB');
zlabel('zC');
hold on
% 以下代码可在三个子平面看到对应的投影情况
scatter3(Archive_F(1,:),Archive_F(2,:),0*ones(1,length(Archive_F(1,:))),'.',...
'MarkerEdgeColor',[8/255,118/255,191/255],...
'MarkerFaceColor',[8/255,118/255,191/255])% xy平面
scatter3(Archive_F(1,:),2.2*10^7*ones(1,length(Archive_F(1,:))),Archive_F(3,:),'.',...
'MarkerEdgeColor',[226/255,124/255,81/255],...
'MarkerFaceColor',[226/255,124/255,81/255])% xz平面
scatter3(0.5*ones(1,length(Archive_F(2,:))),Archive_F(2,:),Archive_F(3,:),'.',...
'MarkerEdgeColor',[230/255,3/255,20/255],...
'MarkerFaceColor',[230/255,3/255,20/255])% yz平面
2.2 图形输出
