Re: [Maxima-discuss] Scale of zaxis

[Jan H. M. <jan...@ma...>]

Hi Mario, 
thanks, that solves the problem! 
If I add „set xyplane at 0“ a negative part of the z-axis is displayed. Is there a way to avoid this? Code below!
Thanks for help!!
Jan

load(draw)$
wxdraw3d(
user_preamble = "set view ,,,2 ; set xyplane at 0",
xrange=[0,5],yrange=[0,5],zrange=[0,10],
grid=true,
color=red,
parametric_surface(s,0,t,s,0,4,t,0,6)
);


Am 27.02.2014 um 21:35 schrieb Mario Rodriguez <bio...@te...>:

> 
> El 27/02/14 16:41, Jan Hendrik Mueller escribió:
>> Hi list,
>> I tried to scale (stretch) the zaxis of a wxdraw3d plot to draw parametric curves.
>> proportional_axis=xyz or user_preamble="set size ratio 1" are the only options which change its default scale. But I want to handle it a bit more flexible...
>> I am using maxima 5.28.0 and wxmaxima 12.08.0
>> Thanks for help!
>> Jan
> 
> 
> Make use of 'view' in user_preamble:
> 
> wxdraw(
>     dimensions=[400,800],
> 
>     gr3d(
>         explicit(x^2+y^2,x,-1,1,y,-1,1),
>         user_preamble="set view ,,0.35,5 "),
> 
>     gr3d(
>         explicit(x^2+y^2,x,-1,1,y,-1,1),
>         user_preamble="set view ,,,0.2 " ))$
> 
> 
> Draw sets the first and second arguments, and maintains the third (plot 
> scale) and fourth (z scale) always equal to 1.
> 
> The Gnuplot manual gives more information on the arguments to be passed 
> to view.
> 
> 
> --
> Marioi
> 
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