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[Plplot-general] how to fill a polygon with plplot (pdl interface)
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From: Bruno P. <bru...@cl...> - 2006-09-28 09:47:32
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Hi all,<br>
<br>
Is plplot a real equivalent to matlab? of course not, it is better!<br>
But, well, am I in front of an issue that may change my mind?<br>
NO, it's impossible!! so please, help me!<br>
<br>
Fast:<br>
Is there a plplot equivalent to the matlab function FILL?:<br>
FILL Filled 2-D polygons.<br>
FILL(X,Y,C) fills the 2-D polygon defined by vectors X and Y<br>
with the color specified by C. The vertices of the polygon<br>
are specified by pairs of components of X and Y. If necessary,<br>
the polygon is closed by connecting the last vertex to the first.<br>
<br>
Detailled:<br>
I'm using PDL plplot interface and i would like to plot an image pixel
by pixel<br>
(the pixels of this image are rectangular and have different sizes).<br>
I've read plplot doc, have a look to x15.pl and x16.pl examples but,
well, :-(<br>
I have not understood anaything.<br>
Anyway, I've found a VERY INEFFICIENT way to do it:<br>
$z is my image, (Xpos* and Ypos*) are the limits of each pixels<br>
<br>
<tt>for ($k=0;$k<$Nbpix;$k++)<br>
{<br>
$w = ones(2,2)*$z($k);<br>
plshades ($w, <br>
$XposLeft($k),<br>
$XposRight($k),<br>
$YposBot($k), <br>
$YposUp($k), <br>
$shedge, $fill_width,<br>
$cont_color, $cont_width, 1, 0, 0, 0);<br>
}<br>
</tt>Anyway, since $Nbpix is 512*100, the display takes a long time....<br>
Perhaps there is a way with \&pltr(1or2) and $cgrid(1or2) as in the
examples<br>
but i did not understand the impact on the surface....<br>
<br>
thanks all,<br>
<br>
best regards,<br>
<br>
bruno<br>
<br>
<br>
<div class="moz-signature">-- <br>
<div align="center"><u>____________________________________________________</u>
<br>
<font face="Verdana" size="2">Dr. Bruno Picard<br>
Dép. Traitement de la Mesure et Segment Sol <br>
(Data Analysis and Ground Processing Unit)
<br>
CLS<br>
Dir. Océanographie Spatiale<br>
8-10 rue Hermès, 31520 Ramonville Saint Agne, France<br>
<br>
Tél: (+33)5.61.39.37.37, Fax: (+33)5.61.39.37.82<br>
Mél: <a href="mailto:bru...@cl...">bru...@cl...</a><br>
Toile : <a href="http://julie-et-bruno.9online.fr/nono/cadrenono.html"
eudora="autourl">http://julie-et-bruno.9online.fr/nono/cadrenono.html</a><br>
</font><u>____________________________________________________</u><br>
<img src="cid:par...@cl..."><br>
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