A wing chart ( or tornado chart ) is a special type of column chart ( or bar chart ), where two columns ( or bars ) are spread over both sides of the axis. The wing chart is useful to compare two categories of data and to provide decision makers with a quick overview.
The <Column2DWingChart> element tag is used to create a column-type wing chart in KoolChart, and the series element tag for the column-type wing chart is <Column2DWingSeries>.
... <Column2DWingChart ... > ... <series> <Column2DWingSeries yField="sales1" yFieldOpp="sales2" ... > ... </Column2DWingSeries> </series> ... </Column2DWingChart> ...
|yField||The yField attribute determines the field name of the upper wing of the vertical axis ( verticalAxis ).|
|yFieldOpp||The yFieldOpp attribute determines the field name of the lower wing of the vertical axis ( verticalAxis ).|