Add vertical error bars on a 2D plot
errbar(x,y,em,ep)
:x,y,em,ep four matrices of the same size. :
errbar adds vertical error bars on a 2D plot. x and y have the same meaning as in plot2d. em(i,j) and ep(i,j) stands for the error interval on the value y(i,j): [y(i,j)-em(i,j),y(i,j)+ep(i,j)].
Enter the command errbar() to see a demo.
t=[0:0.1:2*%pi]';
y=[`sin`_(t) `cos`_(t)]; x=[t t];
`plot2d`_(x,y)
errbar(x,y,0.05*`ones`_(x),0.03*`ones`_(x))