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       
(Showing Draft Content)

Add Charts using Table Structure Reference

SpreadJS supports Structured Reference Formulas in tables. If a chart in SpreadJS is bound to a complete table or certain columns of a table using Table Structure Reference, then any update in the table will automatically update the series or data value of the chart at runtime.

You can use three different structured table referencing strategies for creating charts. Let's discuss the strategies one by one in the sections below.

  • If the chart’s data source comes from the entire table range.

    When a chart is created using an entire table range, and the range of the table is resized or rows and columns are added, deleted or auto-expanded behavior is affected, then the chart's series is also updated simultaneously as shown in the following GIF.


    image



    The following code sample shows how to set a chart datasource with the entire table using structured referencing.

    // Add chart with data range as whole table range.
    var chart1 = sheet.charts.add('chart1', GC.Spread.Sheets.Charts.ChartType.columnClustered, 50, 150, 400, 200, "Table1[[#Headers],[#Data]]");
  • If the chart’s data source comes from specific columns of the table.

    When the table operations change the data in the specific column bound to the chart, then the chart is updated according to the new data, but the series remains unchanged as shown in the following GIF.


    image


    The following code sample uses structured referencing to create a chart with the specific column from tables.

    // Set the chart range to a certain column range of the table.
    var chart2 = sheet.charts.add('chart2', GC.Spread.Sheets.Charts.ChartType.columnClustered, 500, 150, 400, 200, "Table1[[#Headers],[#Data],[Name]],Table1[[#Headers],[#Data],[Age]]");
  • If the chart’s data source is the combination of table structure references and regular range.

    When the chart's data source is defined using the combination of table structure references and a regular range, then the chart is updated as shown in the following GIF.


    image


    The following code sample shows how to set the chart's data source using the combination of table structured referencing and a regular range.

    // Set the chart's range to a combination of table structure reference and regular range.
    var chart3 = sheet.charts.add('chart3', GC.Spread.Sheets.Charts.ChartType.columnClustered, 50, 400, 400, 200, "Table1[[#Headers],[#Data],[Id]],Sheet1!D1:D4");