# how to conver to 3d plot to 2d plot well?

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Sierra on 21 May 2022
Answered: Voss on 21 May 2022
i know how to convert to 3d to 2d plot
first, 3d plot has three axes but if you convert 3d to 2d, it only has two axes.
so what i'm asking is that how to conver to 3d plot to 2d plot with three infrmation(x,y,z)?
ex) i have longitude, latitude and altitude data. and i want to plot this data well with 2d plot
thanks!

Voss on 21 May 2022
You could make a 2d plot of some kind whose color comes from the data in the 3rd dimension, e.g., a surface or a contour:
lat = -50:5:50;
long = -100:5:100;
altitude = 6000-sqrt(lat(:).^2+long.^2);
% first, a 3d scatter plot:
subplot(3,1,1)
[x,y] = meshgrid(long,lat);
scatter3(x(:),y(:),altitude(:));
xlabel('Longitude');
ylabel('Latitude');
zlabel('Altitude');
% second, a surface of the same data,
% colored according to altitude:
subplot(3,1,2)
surface(long,lat,altitude)
xlabel('Longitude');
ylabel('Latitude');
cb = colorbar();
cb.YLabel.String = 'Altitude';
% third, a filled contour of the same data,
% colored according to altitude:
subplot(3,1,3)
contourf(long,lat,altitude)
xlabel('Longitude');
ylabel('Latitude');
cb = colorbar();
cb.YLabel.String = 'Altitude'; 