Re: [Gnuplot-info] sqrt(x)+sqrt(y)=1 graph

[Jorge B. de A. <fic...@so...>]

Hi Hans.=20

I make changes in your answer and using the gnuplot commands below the=20
expected result is a parabola like "y=3Dx**2" but with parabola center axis=
 the=20
line "y=3Dx". The showed parabola is not perfectly simmetrical.=20
I am using gnuplot 4.0
*************
set view map
set contour base
set cntrparam levels discrete 0
set size square
unset surface
set isosamples 30
set xrange [0:6]
set yrange [0:6]
set parametric
plot t, (1-sqrt(t))**2
***************

Em Monday 04 April 2005 08:51, Hans-Bernhard Broeker escreveu:
> What makes you think it's "not good"? =A0I checked against the
> implicit plot, and it looked quite correct.
>
> The way to fake an implicit curve plot in gnuplot is this:
>
> =A0=A0=A0=A0=A0=A0=A0=A0set view map
> =A0=A0=A0=A0=A0=A0=A0=A0set contour base
> =A0=A0=A0=A0=A0=A0=A0=A0set cntrparam levels discrete 0
> =A0=A0=A0=A0=A0=A0=A0=A0unset surface
> =A0=A0=A0=A0=A0=A0=A0=A0set isosamples 30
>
> =A0=A0=A0=A0=A0=A0=A0=A0splot sqrt(x)+sqrt(y)-1
>
> For good results, you'll have tune the x and y ranges a bit.