Using Charts in Spreadsheets
Charts within spreadsheets can display the data from an assigned cell range within the spreadsheet. Any modifications made to the data within the spreadsheet then will be reflected in the assigned chart also. The following example explains how to create a chart assigned to some cell ranges within a spreadsheet document:
Dim Doc As Object Dim Charts As Object Dim Chart as Object Dim Rect As New com.sun.star.awt.Rectangle Dim RangeAddress(0) As New com.sun.star.table.CellRangeAddress Doc = StarDesktop.CurrentComponent Charts = Doc.Sheets(0).Charts Rect.X = 8000 Rect.Y = 1000 Rect.Width = 10000 Rect.Height = 7000 RangeAddress(0).Sheet = 0 RangeAddress(0).StartColumn = 0 RangeAddress(0).StartRow = 0 RangeAddress(0).EndColumn = 2 RangeAddress(0).EndRow = 12 Charts.addNewByName("MyChart", Rect, RangeAddress(), True, True)
Although the code used in the example may appear to be complex, the central processes are limited to three lines: the first central line creates the Doc document variable, which references the current spreadsheet document (Doc line = StarDesktop.CurrentComponent). The code used in the example then creates a list containing all charts of the first spreadsheet (Charts line = Doc.Sheets(0).Charts). Finally, in the last line, a new chart is added to this list using the addNewByName method. This new chart is then visible to the user. The variable RangeAddress determines the assigned cell range whose data will be displayed within the chart. The variable Rect determines the position and size of the chart within the first sheet in the spreadsheet document.
The previous example creates a bar chart. If a different chart type is needed, then the bar chart must be explicitly replaced:
Chart = Charts.getByName("MyChart").embeddedObject Chart.Diagram = Chart.createInstance("com.sun.star.chart.LineDiagram")
The first lines defines the corresponding chart object. The second line replaces the current chart with a new one — in this example, a line chart.
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