# Polar plot

>     eopen('demo6.eps');
>     eglobpar;

>     % scaled polar image plot
>     x=-3*pi:0.1:3*pi;
>     [a b]=meshgrid(x,x);
>     R=sqrt(a.^2+b.^2) + eps;
>     matrix=sin(R)./R+10;
>     ePlotTitleText='Scaled Polar Image';
>     ePlotTitleDistance=15;
>     ePolarPlotAreaCenterPos=[70,170];
>     ePolarPlotAreaRadMax=40;
>     ePolarPlotAreaAngStart=-40;
>     ePolarPlotAreaAngEnd=220;
>     ePolarAxisRadVisible=3;
>     ePolarAxisRadValueVisible=1;
>     ePolarRadiusGridColor=[1 1 1];
>     ePolarAngleGridColor=[1 0 0];
>     eImageLegendLabelText='Color Legend';
>     matrix=epolaris(matrix,ecolors(2),'e');
>     etext('Max Rad',ePolarAxisRadValuePos(1,3),ePolarAxisRadValuePos(1,4),...
>       4,4,1,ePolarPlotAreaAngEnd+90);
>     etext('3. Value',ePolarAxisRadValuePos(3,3),ePolarAxisRadValuePos(3,4),...
>       4,4,1,ePolarPlotAreaAngEnd+90);
>     etext('Min Rad',ePolarAxisRadValuePos(6,3),ePolarAxisRadValuePos(6,4),...
>       4,4,1,ePolarPlotAreaAngEnd+90);
>     etext('      (1. Value)',eImageLegendValuePos(1,1),eImageLegendValuePos(1,2),...
>       4,4,1);

>     % polar image plot
>     ePlotTitleText='Polar Image';
>     ePlotTitleDistance=5;
>     ePolarPlotAreaCenterPos=[70,80];
>     ePolarPlotAreaRadMin=0;
>     ePolarPlotAreaRadMax=40;

>     ePolarPlotAreaAngStart=0;
>     ePolarPlotAreaAngEnd=180;
>     epolari(matrix,ecolors(2));

>     [matrix cm]=eppmread([ePath 'defMap.ppm']);
>     ePolarPlotAreaAngStart=180;
>     ePolarPlotAreaAngEnd=290;
>     epolari(matrix,cm);

>     [matrix cm]=eppmread([ePath 'default.ppm']);
>     ePolarPlotAreaAngStart=290;
>     ePolarPlotAreaAngEnd=360;
>     epolari(matrix,cm);

>     eclose;
>     newbbox=ebbox(5);
>     if ~exist('noDemoShow')
>       eview                                   % start ghostview with eps-file
>     end

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