你可以使用点过滤器挑选一个坐标值，此时可暂时忽略其它坐标值。

You can use point filters to pick one coordinate value at a time while temporarily ignoring other coordinate values.

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通过对测量数据的噪声点过滤，数据精简等预处理，采用NURBS曲线拟合螺杆型线并分析了其拟合误差。

The NURBS curve is used for fitting the screw profile when cloud datas pretreatment is already done such as eliminated noise data and data reduction, the fitting error is also analyzed.

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如果需要添加一点过滤的功能，我们就需要使用<mx:HSlider>控件来更新代码，为它添加一个水平的滑块，来指定表格从哪一天开始显示数据。

To add a little filtering capability, we will update the code with an <mx:HSlider> control, a horizontal slider, which will specify on which day the grid should start the data display.

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