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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">

<html><head><title>Contour plot - EpsTk</title><link rel="stylesheet" type="text/css" href="../styles/main.css"><script language=JavaScript src="../javascript/main.js"></script><script language=JavaScript src="../javascript/searchdata.js"></script></head><body class="ContentPage" onLoad="NDOnLoad()"><script language=JavaScript><!--
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<div id=Content><div class="CFunction"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="Contour_plot"></a>Contour plot</h1><div class=CBody><img src="../images/demo5.png" width="500" height="685"><blockquote><pre>x=-2:.1:2;
y=-2:.1:2;
[X,Y]=meshgrid(x,y);
matrix=X.*exp(-X.^2-Y.^2);

eopen('demo5a.eps',0,180,140);
eglobpar;
ePlotTitleText='Contour Plot';
ePlotTitleDistance=15;
ePlotAreaPos=[20 20];
eXAxisSouthLabelText='x - Axis';
eYAxisWestLabelText='y - Axis';
eImageLegendLabelText='z - Color Legend';
eContourValueVisible=1;
eaxes([-2 0 2],[-2 0 2]);
eimagesc(matrix,ecolors(3),'e');
etext('        (1. value)',eImageLegendValuePos(1,1),...
  eImageLegendValuePos(1,2),4,4,2);
econtour(matrix,[-0.5 0.05 0.5],0,[1 1 1;0 0 0;0 0 0]);
eclose(1,0);


% quiver plot
eopen('demo5b.eps',0,180,140);
eglobpar;
ePlotTitleText='Quiver Plot';
ePlotTitleDistance=15;
ePlotAreaPos=[20 20];
eXAxisSouthLabelText='x - Axis';
eYAxisWestLabelText='y - Axis';
eImageLegendLabelText='z - Color Legend';
eaxes([-2 0 2],[-2 0 2]);
eimagesc(matrix,ecolors(3),'e');

% sw
x=-2.1:.2:-0.1;
y=-2.1:.2:-0.1;
[X,Y]=meshgrid(x,y);
qmatrix=X.*exp(-X.^2-Y.^2);
[dx dy]=egradient(qmatrix,.2,.2);
equiver(X,Y,dx,dy,[1 1 1]);

% nw
x=-2.1:.2:-0.1;
y=0.1:.2:2.1;
[X,Y]=meshgrid(x,y);
qmatrix=X.*exp(-X.^2-Y.^2);
[dx dy]=egradient(qmatrix,.2,.2);
edsymbol('spire','spire.psd');
equiver(X,Y,dx,dy,[1 1 1],'spire');

% ne
x=0.1:.2:2.1;
y=0.1:.2:2.1;
[X,Y]=meshgrid(x,y);
qmatrix=X.*exp(-X.^2-Y.^2);
[dx dy]=egradient(qmatrix,.2,.2);
edsymbol('needle','needle.psd');
equiver(X,Y,dx,dy,[0 0 0],'needle');

% se
x=0.1:.2:2.1;
y=-2.1:.2:-0.1;
[X,Y]=meshgrid(x,y);
qmatrix=X.*exp(-X.^2-Y.^2);
[dx dy]=egradient(qmatrix,.2,.2);
edsymbol('ftria','ftria.psd',1,0.4);
equiver(X,Y,dx,dy,[0 0 0],'ftria');

eclose(1,0);

% quiver and contour
eopen('demo5.eps')
esubeps(2,1,1,1,'demo5a.eps');
delete('demo5a.eps')
esubeps(2,1,2,1,'demo5b.eps');
delete('demo5b.eps')
eclose
if ~exist('noDemoShow')
  eview                                   % start ghostview with eps-file
end</pre></blockquote></div></div></div>

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