Sets the axes from the bottom left corner (x1,y1) to the top right corner (x2,y2).

After setting the axes, they are fixed and not adapted automatically if a plot is out of the currently set axes.

Note that setting axes(x1,x2,y1,y2) where some of the values are nil will only change the non-nil components, and the rest will still be adapted automatically, if they have never been set, or stay fixed as they are if they have been set.

axis('on') and axis('off') also enable or disable the plotting of the axis themselves in the plot.