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Example: findobjThe findobj comm<strong>and</strong> is used to search through the graphical hierarchyfor objects that satisfy particular property values. For example, generatea sphere, a cylinder, <strong>and</strong> a cone:subplot(131)sphereaxis equalax = axis;subplot(132)cylinderaxis equalaxis(ax)subplot(133)cylinder([1 0])axis equalaxis(ax)The three shapes are represented by three surface objects within threeaxes objects. To get the surface h<strong>and</strong>les by getting the children <strong>of</strong> thethree axes you would need to type three calls to get; one for each <strong>of</strong> theaxes:axes_h<strong>and</strong>les = get(gcf,’children’);surf_h<strong>and</strong>le(1) = get(axes_h<strong>and</strong>les(1),’children’);surf_h<strong>and</strong>le(2) = get(axes_h<strong>and</strong>les(2),’children’);surf_h<strong>and</strong>le(3) = get(axes_h<strong>and</strong>les(3),’children’);But an easier way to get the surface h<strong>and</strong>les is to use the findobjcomm<strong>and</strong>. Here we use it to find all the objects in the current figurewhose type property has the value surface:surf_h<strong>and</strong>le = findobj(gcf,’type’,’surface’);We can now work with the vector <strong>of</strong> surface h<strong>and</strong>les to alter all thesurfaces at once. Let us make them transparent:set(surf_h<strong>and</strong>le,’FaceColor’,’none’)c○ 2000 by CRC Press LLC
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