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# 平滑線屬性

您可以在顯示線條的圖表中 (線條型或 XY 型)，選擇顯示曲線，而不是直線。有一些選項可控制這些曲線的屬性。

若要使用此指令...

In the Chart Type dialog of a Line chart or XY chart that displays lines, choose Stepped in the Lines type drop-down, then click the Properties button.

## Line properties

### Line type

選取立方形齒條或 B 齒條。

These are mathematical models that influence the display of the curves. The curves are created by joining together segments of polynomials.

Cubic Spline interpolates your data points with polynomials of degree 3. The transitions between the polynomial pieces are smooth, having the same slope and curvature.

B-Spline uses a parametric, interpolating B-spline curve. Those curves are built piecewise from polynomials.

### Resolution

The Resolution determines how many line segments are calculated to draw a piece of polynomial between two data points. You can see the intermediate points if you click any data point.

A higher value leads to a smoother line.

### Degree of polynomials

For B-spline lines optionally set the degree of the polynomials.

相關主題

選擇圖表類型

圖表類型 XY (散佈)

圖表類型線條

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