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fac2 = [1 2 61 6 31 4 61 6 5];The resulting display is now rendered correctly no matter what the viewingangle:clfpatch(’vertices’,vert2,...’faces’,fac2,’facecolor’,’y’)view(3),grid,xyzPatch ColouringSimple solid colouring <strong>of</strong> patches can be specified using the namedcolours, as we did for the yellow (’y’) patches <strong>of</strong> the previous section.You can also use arbitrary RGB colours. Here is a patch that should beorange on your display:xt = [0 1 .5];yt = [0 0 1];clfh = patch(xt,yt,[1 .4 0])Patches have a number <strong>of</strong> properties that control how they are coloured.By using coloured patches, you can make pictures <strong>of</strong> objects that arecolour-coded to some quantity you want to display. For example, thestress <strong>of</strong> a bent bar could be presented as the colour <strong>of</strong> the bar. Here is alist <strong>of</strong> patch colour properties <strong>and</strong> a description <strong>of</strong> what they do (takenfrom the Using <strong>MATLAB</strong> Graphics manual).CData Specify single, per face, or per vertex colours in conjunction withx, y, <strong>and</strong> z data.CDataMapping Specifies whether colour data is scaled or used directlyas indices into the Figure colormap.FaceVertexCData Specify single, per face, or per vertex colours in conjunctionwith faces <strong>and</strong> vertices data.EdgeColor Edges can be invisible, a single colour, a flat colour determinedby vertex colours, or interpolated colours determined byvertex colours.FaceColor Faces can be invisible, a single colour, a flat colour determinedby vertex colours, or interpolated colours determined byvertex colours.z−1110.5100y−1 000 0.5 10.5x1c○ 2000 by CRC Press LLC
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