Re: [Plplot-general] how to fill a polygon with plplot (pdl interface)

[<hba...@ma...>]

On Sep 28, 2006, at 5:47 AM, Bruno Picard wrote:

>  Fast:
> Is there a plplot equivalent to the matlab function FILL?:
> FILL Filled 2-D polygons.
>     FILL(X,Y,C) fills the 2-D polygon defined by vectors X and Y
>     with the color specified by C.  The vertices of the polygon
>     are specified by pairs of components of X and Y.  If necessary,
>     the polygon is closed by connecting the last vertex to the first.

I believe that the function you seek is called plfill.

An example using the PDL interface:

#!/usr/bin/perl -w

use strict;
use PDL;
use PDL::Graphics::PLplot;

plspage(0, 0, 300, 300, 0, 0);
plinit();
pladv(0);
plvsta();
plwind(0.0, 4.0, 0.0, 4.0);
plbox(0.0, 0, 0.0, 0, "bcnst", "bcnstv");

plcol0(2);
my $x = pdl(1.0, 1.0, 2.0, 2.5);
my $y = pdl(1.0, 2.2, 2.1, 1.0);
plfill($x, $y);

plend();


The polygon is automatically closed and is drawn with the current  
color. Also, note that the PDL interface automatically fills in the  
"n" in plfill(n,x,y).

best,
-Hazen