3D scatter with 2 different data sets as different colours

Question

N/A 2020-2-12

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/505148-3d-scatter-with-2-different-data-sets-as-different-colours

编辑： John Kelly 2024-4-15，22:48

wrong.png

I have 2 data sets in Kitap 1 and PLMS. I want to show this 2 datasets with different colours in one 3D scatter. I wrote this code but I have only yellow points with this. Can somebody help me for 2 different colours.

data=xlsread('Kitap1');
x=data(1:end,1);
y=data(1:end,3);
z=data(1:end,5);
data2=xlsread('PLMS');
xx=data2(1:end,1);
yy=data2(1:end,4);
zz=data2(1:end,3);
figure(1);
scatter3(xx,yy,zz,'r','filled');
hold on
scatter3(x,y,z,'y','filled');
hold off
grid on
xlabel('X(km)')
ylabel('a(m/s^2)')
zlabel('CO_2 emission(g/s)')
zlim([0 100])

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Subhadeep Koley 2020-2-12

编辑：John Kelly 2024-4-15，22:48

在 MATLAB Online 中打开

Can you provide the Kitap1 and PLMS files?

Because in my end I can plot 2 different data in 2 different colours successfully (Refer the code below).

close all; clc;
% Random data1
x = 1:200;
y = 1:200;
z = rand(1, 200);
% Random data2
xx = 1:200;
yy = 1:200;
zz = rand(1, 200);
figure; scatter3(xx, yy, zz, 'r', 'filled');
hold on;
scatter3(x, y, z, 'y', 'filled');
hold off; grid on;
xlabel('X(km)'); ylabel('a(m/s^2)'); zlabel('CO_2 emission(g/s)');

N/A 2020-2-12

Here there are :)

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Answer 1

Subhadeep Koley 2020-2-12

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/505148-3d-scatter-with-2-different-data-sets-as-different-colours#answer_415295

在 MATLAB Online 中打开

Firstly your PLMS.xlsx file has some NaN values. Moreover, the variable x is identical with xx, y is identical with yy, and so on...

Therefore, the first scatter plot is being overlapped by the second scatter plot.

I have increased the marker size of the first scatter plot and decreased the marker size of the second scatter plot in the code below. It is clearly visible how the first scatter plot is being overlapped by the second scatter plot.

Hope this helps!

clc; close all;
data = xlsread('Kitap1.xlsx');
data2 = xlsread('PLMS.xlsx');
x = data(1:end, 1);
y = data(1:end, 3);
z = data(1:end, 5);
xx = data2(1:end, 1);
yy = data2(1:end, 4);
zz = data2(1:end, 3);
% Discarding NaN values
xx(isnan(xx)) = [];
yy(isnan(yy)) = [];
zz(isnan(zz)) = [];
figure;
scatter3(xx, yy, zz, 100, 'r', 'filled');
hold on;
scatter3(x, y, z, 40, 'y', 'filled');
hold off;
grid on;
xlabel('X(km)');
ylabel('a(m/s^2)');
zlabel('CO_2 emission(g/s)');