如何在GNU Octave中隐藏（使不可见）单个绘制点？

Question

I use the following function ( drawellipse.m ). I want to be able to draw the ellipse, but suppress/hide/make invisible the last point in the matrix (rx,ry)

Answer 1

# simulate your drawellipse
plot(1:5, "-ro")
# get handle of line object
h = findobj (gcf, "type", "line")
# remove last point from xdata
set (h, "xdata", get(h, "xdata")(1:end-1))