Vue PolarChart - argumentAxis.constantLines

A constant line is a straight line that can be used to display, for example, an asymptote of a graph. To display constant lines on a chart, assign an array of objects specifying the options of each constant line to the constantLines field. It is necessary to set the value option within these objects. The other options can be set if required.

You can customize the appearance of all the argument axis constant lines at once. For this purpose, use the argumentAxis.constantLineStyle configuration object. Note that the options that are set within the argumentAxis.constantLine object override the corresponding options that are set within the argumentAxis.constantLineStyle object.

This option supports the following colors:

• Hexadecimal colors
• RGB colors
• RGBA colors
• Predefined/cross-browser color names
• Predefined SVG colors

The following values are available.

• solid
  Displays a solid, continuous constant line.
• longDash
  Displays a constant line using long dashes.
• dash
  Displays a constant line using dashes.
• dot
  Displays a constant line using dots.
• Any combination of 'longDash', 'dash' and 'dot'
  Displays a constant line by repeating the specified combination. For instance, 'dashdotdash'.

Use the DashStyle enum to specify this option when the widget is used as an ASP.NET MVC Control. This enum accepts the following values: Solid, LongDash, Dash, and Dot.

A constant line label shows information on the constant line. You can configure label appearance using the label object. Within this object, you can set font options, a position and text using corresponding fields. In addition, you can specify the horizontal and vertical alignments for the label.

You can set the label options for all the argument axis constant lines simultaneously. For this purpose, use the argumentAxis.constantLineStyle.label object. Note that the options that are set within the argumentAxis.constantLine.label object override the corresponding options that are set within the argumentAxis.constantLineStyle.label object.