By default, the Chart platform orders the bars using one of the common orders supported by JMP (months, days of the week, and so on). However, if the grouping column has a Row Order Levels column property, the levels are ordered in that order. If the grouping column has a Value Ordering column property, it uses that order. If both Row Order Levels and Value Ordering properties are defined, the Value Ordering property has precedence. With neither property in effect, bars are drawn in alphanumeric order.