# 4 variables in 3d plot

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fhfghfg on 11 Jan 2023
Commented: Cris LaPierre on 12 Jan 2023
I have 4 variables that I want to put od 3d scatter plot. X and Y are namig the concentration of tested substances while Z and C are the measured values of these substances, respectively.
I would like to present this data as in this picture. Refering to the photo blood pressure would be the value in the bracket, while Z and C would be "smoker" and "non-smoker" https://ch.mathworks.com/help/examples/matlab/win64/Visualizing4DExample_01.png
x = [15 25 50 15 15 15 25 25 25 50 50 50 0 0 0];
y = [0 0 0 25 50 75 25 50 75 25 50 75 25 50 75];
z = [53457 75132 111904 31863 86505 56549 75240 116996 99230 180657 171960 140200 188 322 121];
c = [14 12 10 355 1561 1212 473 845 1222 594 619 771 484 1064 1290];

Cris LaPierre on 11 Jan 2023
The linked figure appears to have been created with stem3.
x = [15 25 50 15 15 15 25 25 25 50 50 50 0 0 0];
y = [0 0 0 25 50 75 25 50 75 25 50 75 25 50 75];
z = [53457 75132 111904 31863 86505 56549 75240 116996 99230 180657 171960 140200 188 322 121];
c = [14 12 10 355 1561 1212 473 845 1222 594 619 771 484 1064 1290];
stem3(x,y,z)
hold on
stem3(x,y,c)
hold off
##### 2 CommentsShowHide 1 older comment
Cris LaPierre on 12 Jan 2023
The vertical lines are there because it is a stem plot. If you would rather just have the markers, use scatter3.

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