addpoints(h,x,y,z) only plots x & y values

I am trying to plot a 3d line generated from GPS data. I have used addpoints(h,x,y) followed by drawnow and that works fine for 2d data. When I add height data and use the addpoints(h,x,y,z) I still get a 2d graph layout and the same result as if I used addpoints(h,x,y). I've checked and z is nonzero. How do I make this type of plot?

thanks for any help.

Answer 1

[dpb]

The orientation appears to be xy by default; use the 3D rotation tool to manually orient to see the third dimensions or set viewing angle programmaically. The data are there, they're just the x-y projection by default orientation of axes.