Example of a Scatter Chart Using Advanced Configuration

Advanced configuration for HTML5 charts exposes the details of the underlying multi-dimensional dataset and gives you greater control over your charts. This example shows how to use the advanced tab to create a scatter chart.

Scatter charts plot two or more data series as points. The charts are intended to show raw data distribution of the series. The data is represented as follows:

1. The first data series is represented as the X values.
2. The second data series is represented as correlated Y values.
3. Any additional data series are also plotted as Y values correlated to the X values provided by the first series.

As a result, a scatter chart always displays one less plot than the number of data series included.

This example shows how to use advanced configuration to create a scatter chart that shows maximum and average freight in each city for each year. You can also create a scatter chart using simple configuration view.

To create the report for the chart:

1. Create a new, blank report using the Sample DB data adapter and the query: select * from orders.
2. Click Next.
3. Click to select all the fields, then click Finish.
4. Delete all bands except for Title and Summary.
5. Enlarge the Summary band to 500 pixels by changing the Height entry in the Band Properties view.

To create the chart:

1. Give your report a title like “Maximum and Average Freight in Years for City”.
2. Drag the HTML5 Charts element into the summary band.
3. Select Scatter. If a verification dialog is displayed, click Yes.
4. Click the Data Configuration tab.
5. Click Switch to Advanced Configuration.

Scatter Chart Properties

6. Under Categories Levels, select Level1 and click Modify. Then enter the following:
     Name: ShipCountry
     Expression: $F{SHIPCOUNTRY}
     Value Class Name: java.lang.String
     Order: Ascending

Click OK.

7. Under Categories Levels, click Add and create a second Category with the following information:
     Name: ShipCity
     Expression: $F{SHIPCITY}
     Value Class Name: java.lang.String
     Order: Ascending

Click OK.

8. Under Series Level, select Series1 and click Modify. Then enter the following:
     Name: Order Year
     Expression: YEAR($F{ORDERDATE})
     Value Class Name: java.lang.Integer
     Order: Ascending

Click OK.

9. Under Measures, select Measure1 and click Modify. Then enter the following for maximum freight:
     Name: Max Freight
     Label Expression: "Max Freight"
     Calculation: Highest
     Value Expression: $F{FREIGHT}
     Value Class Name: java.math.BigDecimal

Click OK.

10. Under Measures, select Measure0 and click Modify. Then enter the following for average freight:
     Name: Average Freight
     Label Expression: "Average Freight"
     Calculation: Average
     Value Expression: $F{FREIGHT}
     Value Class Name: java.math.BigDecimal

Click OK.

The chart is now configured. Click OK to close the dialog, then preview the chart.

Scatter chart

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