Re: [Maxima-discuss] Interferences between packages (here: draw and vect)

[Gunter K. <gu...@pe...>]

> I think it's much better
> to introduce scope rules which make now-common errors go away by
> default.

Wasn't oo sure about my approach, neither as it doesn't solve the
problem but only hinders it from materializing without any user interaction.

In the meantime wxMaxima got another report from one of its regular
contributors:

Draw by itself works fine:

load(draw)$
draw2d(grid      = true,
             line_type = solid,
             key       = "y^2=x^3-2*x+1",
             implicit(y^2=x^3-2*x+1, x, -4,4, y, -4,4),
             line_type = dots,
             key       = "x^3+y^3 = 3*x*y^2-x-1",
             implicit(x^3+y^3 = 3*x*y^2-x-1, x,-4,4, y,-4,4),
             title     = "Two implicit functions" )$

The same is true for implicit_plot:

load(implicit_plot)$
implicit_plot(x^2 + y^2 - 1, [x,-1,1], [y,-1,1])$

But after doing this repeating the draw command results in:

Maxima encountered a Lisp error:


EVAL/APPLY: Too few arguments (6 instead of at least 7) given to
PRINT-SQUARE

Automatically continuing.
To enable the Lisp debugger set *debugger-hook* to nil.


Kind regards,

     Gunter.