BMI graph, 3 variables on 2D graph

Question

karolcia01 2017-12-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/374814-bmi-graph-3-variables-on-2d-graph

评论： Aryan 2022-10-13

How can i create a graph in GUI (it's BMI graph), where x is from 0 to 2.5, y is from 0 to 650 and i want to draw a few lines let's call them "c" (y/x^2=c) and i would like to draw lines for c=16.5,18,25,30,35 and 40. How can i do that to display 3 variables on 2D graph and i only want to count c, x and y should just change by 0.1 and 1.

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karolcia01 2017-12-29

I want to achieve something exactly like here: https://www.mathworks.com/matlabcentral/answers/269143-legend-does-not-appear-in-my-report-with-report-explorer#answer_297962?s_tid=prof_contriblnk

Aryan 2022-10-13

@karolcia01please advise your code for this question

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Answer 1

ANKUR KUMAR 2017-12-30

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/374814-bmi-graph-3-variables-on-2d-graph#answer_298153

在 MATLAB Online 中打开

If you want to use 3 variables on 2D plot, then you can use contour or contourf or surf or surfc.

clc
clear
lat=(1:10)';
lon=(1:20)';
rf=randi(20,10,20);
figure()
contourf(lon,lat,rf,'linecolor','none');
figure()
[x,y]=meshgrid(lon,lat);
a=surf(x,y,rf,'FaceAlpha',0.5,'EdgeColor', 'none')
figure()
surfc(x,y,rf,'FaceAlpha',0.5,'EdgeColor', 'none')