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 how to make smooth edge of 3D surface chart |
| Posted by Alex Chu on Oct-02-2014 18:30 |
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Hi
I used 3d surface chart to display wafer thickness map,
how ever, the edge of the wafer shows not good enough,
is there better to display smooth edge on the chart?
I tried to increase Interpolation numbers, the edge shows better but it shows more
radiation lines (raw data is imputed by line) on the chart.
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| Re: how to make smooth edge of 3D surface chart |
| Posted by Peter Kwan on Oct-03-2014 02:51 |
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Hi Alex,
Unluckily, in ChartDirector, the edges of the surface chart are always rectangular in shape.
Internally, ChartDirector divides the surface into rectangular cells, and then compute the
height and colors of the points in the cell. ChartDirector will render the cells in 3D. So the
surface chart you see are actually many rectangles stitched together. The density of the
rectangles are configurable using SurfaceChart.setInterpolation. If you use render the chart
in wireframe, you can see the rectangles used.
Increasing the rectangle density makes the rectangle smaller, so the rectangular boundary
can become less evident.
For your case, are you using spline surface interpolation or bilinear interpolation (is the third
parameter in setInterpolation set to true or false? If you are using bilinear interpolation,
changing it to linear interpolation may make the radial lines less noticible or even eliminate
them.
Regards
Peter Kwan |
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