The chart is created with default settings. After the chart is finished, you can edit its properties to change the appearance. Line styles and icons can be changed on the Line tab page of the data series properties dialog.
Choose Smooth from the Line type dropdown to draw curves instead of straight line segments.
按一下 [特性] 可設定曲線的詳細資訊。
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.
Stepped Lines
Choose Stepped from the Line type dropdown to draw lines which step from point to point instead of straight line segments.
按一下 [特性] 可設定曲線的詳細資訊。
There are 4 different step types:
Step
Description
Start with horizontal line and step up vertically at the end.
Start to step up vertically and end with horizontal line.
Start with horizontal line, step up vertically in the middle of the X values and end with horizontal line.
Start to step up vertically to the middle of the Y values, draw a horizontal line and finish by stepping vertically to the end.