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Reference lines

Reference lines are vertical or horizontal lines in a graph, corresponding with user-defined values on the x-axis and y-axis respectively.

Each graph can contain up to 16 vertical and horizontal reference lines.

Add reference line

Method 1

Right-click in the graph and click Add and Horizontal reference lineor Vertical reference line.

Graph reference lines

Method 2

Click in the margin of the graph to create a reference line and drag it into the graph plot area.

Graph reference lines

While you are dragging the reference line in the plot area, the corresponding value is displayed next to the reference line.

Graph reference lines

Format reference line

Right-click on the reference line and click Format reference line on the context menu.

Graph reference lines

In the dialog box you can select line color, style and width, and enter an exact value for the reference line.

Graph reference lines

Note: all reference lines in one graph have the same color style and width.

Remove reference line

Method 1

Right-click on the reference line and click Remove reference line on the context menu.

Method 2

Drag the reference line into the graph's margins.

See also