To understand Top N Bottom N formatter, refer – Top N Bottom N.

For legend configured charts like Column Chart, Bar Chart, Line Chart, etc., Top N Bottom N works in following way:

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Consider Column and Line charts with configuration as below:

Column Chart Configuration:

Line Chart Configuration:

The charts show data on the charts as below:

The charts are configured with Legend configuration, showing legends for Location and Quarter columns respectively.

To configure top 3 configuration on the chart Top N configuration is set in the Column chart formatters as below:

Thus, the Top 3 categories (with Births -Sum by Quarter) – Q3, Q4 and Q2 are displayed with all its legend values and the chart is displayed as below:

Right side chart shows the Sum of Births by Quarter and on chart, the Top values for Sum by Births are Q3, Q4, Q2. Same are considered while showing the Top 3 values when configured with Legends.

Line Chart, configured for Bottom 2 configuration in Top N Bottom N formatter shows the values as below:

The right-side chart shows the Bottom 2 values -Pune, Delhi. The same values are displayed on the Legend configured chart showing their respective Legend values of Quarters.