MATLAB: Plot3 error bars

Question

Hi all, does anyone know how I might add an error bar to a data point along the Z axis for a plot3 plot?

Answer 1

The errorbar function is only defined for 2D plots.

Here’s one approach to plotting errorbars with plot3:

x = rand(10,1);                                                         % Create Data


y = rand(10,1);                                                         % Create Data
z = rand(10,1);                                                         % Create Data
errl = rand(10,1)/5;                                                    % Error Bar Low Limits
errh = rand(10,1)/5;                                                    % Error Bar High Limits
figure
plot3(x(:)', y(:)', z(:)')                                              % Plot Data
hold on
plot3([x(:),x(:)]', [y(:),y(:)]', [-errl(:),errh(:)]'+z(:)', '-r')      % Plot Error Bars
hold off
grid on
legend('Data','Errors')

These error bars don’t have crossbars at the ends, and it’s not immediately obvious to me how to add them.

Plotting a dot marker at the ends is one option, using '.-r' (instead of '-r') as the LineStyle.