i guess this works: > draw(x=1, x, y, range == [-3..3, -3..3])
because the program uses Cartesian coordinates to make plots, and this command has everything to provide those [x=1, y=-3..3]. in case of other coordinate systems: > draw(t=1, t, r, range == [-3..3, -3..3], coordinates==polar) there are no Cartesian coordinates and the polar(pt) and elliptic(a) functions are of no help because theta is constant. i think a simple solution might be as follows: if t is not π/2 [incl. ±πn] then x=-3..3 and y=x*tan(theta). if t=π/2 or t=3π/2 then x=0 and y=-3..3. but that would work if the ranges are still for x and y for Cartesian coordinates and not for r and theta. -- You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" group. To unsubscribe from this group and stop receiving emails from it, send an email to fricas-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/fricas-devel/yW96qU8AfxXta6or_CCUxlmNwxl7XI4nxMdAYLaBmZ25L4u3eL78PGOSDMo8nF63diXpICibNx__4yvhkyUm-SdcVmRvP4H3g0nvb9HMXjI%3D%40proton.me.