On the "Figure Editor" window there is button "brush/select data". Also command >>brush exists. This effects in case: >>fplot('x^2',[0 1]), as noted in help on this command. But no effect (to remark part of graph by color) here: >>F=inline('x*cos(y)+2*y*cos(x)-1./(2*x+y)');ezplot(F)
And also question: For curve y(x) or r(t) (2 or 3D), how to remark (without marker, only color) a parts of curve by program way (without mouse)? For example, for parabola on abscissa [0;1]-red,[1;2]-orange,... but using one line-obiect, that is, parabola has already given as whole.