JavaScript/jQuery PolarChart - argumentAxis.minorTickInterval
To divide a lengthy chart axis into shorter segments, major and minor ticks are used. Major ticks are accompanied with axis labels. Between each pair of neighboring major ticks, several minor ticks reside. Minor ticks are required when major ticks are far from each other. To set a custom minor tick interval, use the minorTickInterval property. If this property is not set, minor ticks are arranged automatically.
In case your axis displays numbers, assign a numeric value to this property. If the axis displays dates, assign one of the predefined string values. To set the interval to several days, hours, etc., assign an object with the corresponding field specified (days, hours or another field). Note that this object must contain only one of the fields described in this section.
days
Specifies the time interval measured in days. Accepts integer values. Available only for an axis/scale that displays date-time values.
hours
Specifies the time interval measured in hours. Accepts integer values. Available only for an axis/scale that displays date-time values.
milliseconds
Specifies the time interval measured in milliseconds. Accepts integer values. Available only for an axis/scale that displays date-time values.
minutes
Specifies the time interval measured in minutes. Accepts integer values. Available only for an axis/scale that displays date-time values.
months
Specifies the time interval measured in months. Accepts integer values. Available only for an axis/scale that displays date-time values.
quarters
Specifies the time interval measured in quarters. Accepts integer values. Available only for an axis/scale that displays date-time values.
seconds
Specifies the time interval measured in seconds. Accepts integer values. Available only for an axis/scale that displays date-time values.
weeks
Specifies the time interval measured in weeks. Accepts integer values. Available only for an axis/scale that displays date-time values.
years
Specifies the time interval measured in years. Accepts integer values. Available only for an axis/scale that displays date-time values.