Hello,

sometimes when doing plots, I like to have the x-axis and the y-axis plotted with arrows thus, the ideia is: after ploting things, call function "drawaxis" with or without parameters, and the lines/arrows of axis are displayed.

One way to do this is to use the "annotation" but this requires the normalized numbers of the current figure. And this is a bit cumbersome.

Probably there are a lot of other methods to this but I could not find a simple one.

If octave already has something similar, well, at least I learned a couple of things :)

So, I decided to create my own version of function drawaxis and I would like to share it.

I attached the function as well as some figures.

To use it:

plot((-2:10),randn(13,1))
drawaxis(10,pi/6,0.5);

A few things I would like to implement but I don't know how:

1) if the range (xlim/ylim) is changed, how to redraw the drew axis?
2) if figure window has its size changed, how to redraw the drew axis?
3) parameteres like linewidth and color could be passed to function, but how? Using varargin, maybe? Have no idea.

Kind regards,
Leonardo