'Re: [Scilab-users] 2D contour for a non-rectangular region.'

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List:       scilab-users
Subject:    Re: [Scilab-users] 2D contour for a non-rectangular region.
From:       Serge Steer <Serge.Steer () inria ! fr>
Date:       2013-06-07 10:02:15
Message-ID: 51B1AFA7.8050001 () inria ! fr
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Le 07/06/2013 00:50, Ganesh Diwan a écrit :
> How does one go about plotting a 2D contour for a non-rectangular region?
> I have a data file that contains XY data and the potential values at 
> the points. The region of interest is not rectangular.
> Is there a way to generate a contour plot of such a data with Scilab?

Yes, just enter your data in a matrix and set the undefined values to %nan

function z=my_surface(x, y),z=x*sin(x)^2*cos(y),endfunction
t=linspace(-%pi,%pi,30);
z=feval(t,t,my_surface);
z(1:15,1:15)=%nan;
clf;contour(t,t,z,20);

Serge Steer
INRIA
> Many thanks in advance for help.
>
>
> _______________________________________________
> users mailing list
> users@lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

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    <div class="moz-cite-prefix">Le 07/06/2013 00:50, Ganesh Diwan a
      &eacute;crit&nbsp;:<br>
    </div>
    <blockquote
cite="mid:CAL_+43VW+PWGV4dcXGUM-=7T7pAQm90s+R9X2L38ZKRyNcFZEw@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div>How does one go about plotting a 2D contour for a&nbsp;
          non-rectangular region?<br>
        </div>
        <div>I have a data file that contains XY data and the potential
          values at the points. The region of interest is not
          rectangular.<br>
        </div>
        <div>Is there a way to generate a contour plot of such a data
          with Scilab?<br>
        </div>
      </div>
    </blockquote>
    <br>
    Yes, just enter your data in a matrix and set the undefined values
    to %nan<br>
    <br>
    function z=my_surface(x, y),z=x*sin(x)^2*cos(y),endfunction<br>
    t=linspace(-%pi,%pi,30);<br>
    z=feval(t,t,my_surface);<br>
    z(1:15,1:15)=%nan;<br>
    clf;contour(t,t,z,20);<br>
    <br>
    Serge Steer<br>
    INRIA<br>
    <blockquote
cite="mid:CAL_+43VW+PWGV4dcXGUM-=7T7pAQm90s+R9X2L38ZKRyNcFZEw@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div>Many thanks in advance for help.<br>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
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    </blockquote>
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