3D Graph (bar3?) with two vectors and one matrix

Dear community,

I am triying to use 'bar3' to obtain a 3D bar graph from three differebt datasets:

• A vector time(426x1 double)
• A vertor Xaxis(40x1 double)
• A matrix FlowRate(426x40 double)

As you can guess, the objecitve is to plot the evolution of the FlowRate (Z-axis) along the time(Y-axis) at several locations (X-axis). Is this possible with 'bar3'? Or should I find another alternative?

Thank you in advance!

Answer 1

[Drishan Poovaya]

As per my understanding, you will not get the type of output you want with bar3. Refer to the documentation of bar3

https://www.mathworks.com/help/matlab/ref/bar3.html

How it works is you provide a matirx Z, and bar3(Z) will plot a bar graph where each bar corresponds to one element of Z and has the height of that element.

I would suggest you use stem3 instead, this should give you the result you expect

% x  40x1 double
% y  426x1 double
% FlowRate  426x40 double
[X,Y] = meshgrid(x,y);
% X, Y  426x40 double
stem3(X,Y,FlowRate)

Documentation

https://www.mathworks.com/help/matlab/ref/meshgrid.html

https://www.mathworks.com/help/matlab/ref/stem3.html