Difference between revisions of "Documentation/BASIC Guide/Charts in Spreadsheets"

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{{DISPLAYTITLE:Using Charts in Spreadsheets}}
 
{{DISPLAYTITLE:Using Charts in Spreadsheets}}
  
Charts are not treated as independent documents in {{OOo}}, but as objects that are embedded in an existing document.
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Charts within spreadsheets can display the data from an assigned cell range within the spreadsheet.
 
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Any modifications made to the data within the spreadsheet then will be reflected in the assigned chart also.
While charts in text and drawing documents remain isolated from the content of the document, when used in spreadsheet documents, a mechanism is provided which allows a link to be established between the document data and embedded charts. The following example explains the interaction between spreadsheet document and chart:
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The following example explains how to create a chart assigned to some cell ranges within a spreadsheet document:
  
 
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<source lang="oobas">
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</source>
  
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 <tt>Doc</tt> document variable, which references the current spreadsheet document (<tt>Doc</tt> line = <tt>StarDesktop.CurrentComponent</tt>). The code used in the example then creates a list containing all charts of the first spreadsheet (<tt>Charts</tt> line = <tt>Doc.Sheets(0).Charts</tt>). Finally, a new chart is added to the last line of this list using the <tt>addNewByName</tt> method. This new chart is then visible to the user.
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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 <tt>Doc</tt> document variable, which references the current spreadsheet document (<tt>Doc</tt> line = <tt>StarDesktop.CurrentComponent</tt>). The code used in the example then creates a list containing all charts of the first spreadsheet (<tt>Charts</tt> line = <tt>Doc.Sheets(0).Charts</tt>). Finally, in the last line, a new chart is added to this list using the <tt>addNewByName</tt> method. This new chart is then visible to the user. The variable <tt>RangeAddress</tt> determines the assigned cell range whose data will be displayed within the chart. The variable <tt>Rect</tt> determines the position and size of the chart within the first sheet in the spreadsheet document.  
  
The last line initializes the <tt>Rect</tt> and <tt>RangeAddress</tt> auxiliary structures, which the <tt>addNewByName</tt> method also provides as a parameter. <tt>Rect</tt> determines the position of the chart within the spreadsheet. <tt>RangeAddress</tt> determines the range whose data is to be linked to the chart.
 
  
The previous example creates a bar chart. If a different type of graphic is needed, then the bar chart must be explicitly replaced:
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The previous example creates a bar chart. If a different chart type is needed, then the bar chart must be explicitly replaced:
  
 
<source lang="oobas">
 
<source lang="oobas">

Revision as of 09:53, 18 July 2008

Template:Documentation/NeedsRework


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.

Template:Documentation/Note

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