目录

# 平滑线属性

在显示线条的图表中 (线条类型或 XY 类型)，您可以选择显示曲线，而不显示直线。某些选项控制这些曲线的属性。

要访问此命令...

在「折线图」或「XY 散点图」的「图表类型」对话框中，在「线条类型」下栏框中选择「阶梯线」，然后点击「属性」按钮。

## Line properties

### Line type

选择三次样条或 B 样条。

这些数学模型将影响曲线的显示。曲线通过合并多项式各段生成。

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

对 B-样条 可以选择性地设置多项式的阶数。

相关主题

选择一种图表类型

图表类型 XY (散点图)

图表类型 折线图