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List:       gnuplot-info
Subject:    Re: plotting a 3d point in a 3d graph
From:       matuda () film ! s ! dendai ! ac ! jp
Date:       2003-04-30 1:41:43
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Hi Roberto,

There are some mistakes in your script.

1. typo;
   splot -x**2 +x*y -2y**2 +8*x +3*y 
   --> splot -x**2 +x*y -2*y**2 +8*x +3*y

2. output should not be changed in multiplot mode;
   set multiplot
   set output "test.png"
   -->
   set output "test.png"
   set multiplot

3. no color/monochrome  option with png terminal;
   set terminal png small color xffffff x000000 ...
   --> set terminal png small xffffff x000000 ...

>Hi,
>i'm using gnuplot to draw 3d functions in a program that calculates
>maximum and minimum of functions.
>
>Now, I can't realize how to plot the point I find on the already plotted
>3d graph. I use the png terminal to embed the gnuplot graph in the
>program.
>
>I tried the following commands, but they appear to not work on the png
>terminal (they somewhat work on the x11 one):
>
>set terminal png small color xffffff x000000 xc8c0c0 xacc5f1 xfdd9d9
>set multiplot
>set output "test.png"
>set grid
>set hidden3d
>set nokey
>set isosamples 40
>splot -x**2 +x*y -2y**2 +8*x +3*y
>set parametric
>splot 5,2,23 with points ps 5
>set nomultiplot
>
>Any idea on how to draw the a point on a 3d function ?
>
>
>Thanks,
>-- 
>Roberto Sebastiano <askrs@tiscalinet.it>
>
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I hope things go bettter with abobe changes.

Namio MATUDA<matuda@film.s.dendai.ac.jp>
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