<simulation>
  <header>
    <title>Exemple de surface</title>
    <title lang="english">A simple surface example</title>
    <title lang="spanish">Ejemplo de superficie</title>
    <author>Stéphane Mottelet, Guillaume Barbaud</author>
    <keywords lang="french">simulation,scilab,xml</keywords>
    <keywords lang="spanish">Simulación, Scilab, XML</keywords>
  </header>
  <notes>
    <p>Un exemple très simple de représentation d'un surface dans l'espace. L'interface dispose
    de glissières permettant d'ajuster les angles de visualisation.
    </p>
  </notes>
  <notes lang="english">
    <p>A very simple example representing a surface. The interface provides
    two sliders allowing to adjust the visualization angles.
    </p>
  </notes>
  <notes lang="spanish">
    <p>Un ejemplo sencillo de representación de una superficie en tres dimensiones. La interfaz dispone de deslizadores que permiten ajustar los ángulos de visualización</p>
  </notes>
  <parameters><section>
      <title lang="english">Parameters of the surface</title>
      <title>Paramètres de la surface</title>
      <title lang="spanish">Parámetros de la superficie</title>
      <scalar increment="0.01" label="frequencex" max="10" min="0" scale="1"><name lang="french">Fréquence</name><name lang="spanish">Frecuencia</name><value>0.5</value></scalar>
      <scalar increment="0.01" label="frequencey" max="10" min="0" scale="1"><name>Fréquence</name><name lang="english">Frequency</name><name lang="spanish">Frecuencia</name><value>0.5</value></scalar>
      <scalar increment="1" label="az" max="90" min="-90" scale="1"><name>Azimuth</name><name lang="english">Azimuth</name><name lang="spanish">Acimut</name><value>45</value></scalar>
      <scalar increment="1" label="el" max="90" min="-90" scale="1"><name>Elévation</name><name lang="english">Elevation</name><name lang="spanish">Elevación</name><value>45</value></scalar>
    </section></parameters>
  <compute>
    <defdomain2d label="carre">
      <name>Carré unité</name>
      <name lang="english">Unit square</name>
      <name lang="spanish">Cuadrado unidad</name>
      <rectangle>
        <defdomain1d label="x">
          <name>x</name>
          <name lang="english">x</name>
          <name lang="spanish">x</name>
          <interval discretization="linear" steps="30">
            <initialvalue>-1</initialvalue>
            <finalvalue>1</finalvalue>
          </interval>
        </defdomain1d>
        <defdomain1d label="y">
          <name>y</name>
          <name lang="english">y</name>
          <name lang="spanish">y</name>
          <interval discretization="linear" steps="30">
            <initialvalue>-1</initialvalue>
            <finalvalue>1</finalvalue>
          </interval>
        </defdomain1d>
      </rectangle>
    </defdomain2d>
  </compute>
  <graphs>
    <nonparametricsurface label="mysurf">
      <refdomain2d ref="carre" />
      <x3 label="z">
        <name>Altitude</name>
        <name lang="english">Height</name>
        <name lang="spanish">Altura</name>
        <value>-( tanh(frequencex*x.^2+frequencey*y.^2) )</value>
      </x3>
    </nonparametricsurface>
  </graphs>
  <display>
    <window splitx="2">
      <axis2d iso="yes" xmax="1" xmin="-1" ymax="1" ymin="-1">
        <drawsurface mode="level" ref="mysurf" shading="flat" />
      </axis2d>
      <axis3d azimuth="az" elevation="el" iso="yes">
        <drawsurface mode="wireframe" ref="mysurf" />
      </axis3d>
    </window>
  </display>
</simulation>