Statistics

OpenOffice.org Developer's Guide

Charts

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• Handling Chart Documents

• Creating and Adding a Chart to a Spreadsheet
• Creating a Chart OLE Object in Draw and Impress
• Setting the Chart Type
• Accessing Existing Chart Documents

• Working With Charts

• Data Access
• Chart Document Parts

• Common Parts of all Chart Types
• Features of Special Chart Types

• Statistics
• 3-D Charts
• Pie Charts
• Stock Charts

• Chart Document Controller
• Chart Add-Ins

• Prerequisites
• How Add-Ins Work
• How to Apply an Add-In to a Chart Document

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Statistical properties like error indicators or regression curves can be applied. The regression curves can only be used for xy-diagrams that have tuples of values for each data point. The following example shows how to add a linear regression curve to an xy-diagram.

Additionally, the mean value line is displayed and error indicators for the standard deviation are applied.

  // get the diagram
  // ...
 
  // get the properties of a single series
  XPropertySet aProp = maDiagram.getDataRowProperties(1)
 
  // set a linear regression
  aProp.setPropertyValue("RegressionCurves", ChartRegressionCurveType.LINEAR);
 
  // show a line at y = mean of the series' values
  aProp.setPropertyValue("MeanValue", new Boolean(true));
 
  // add error indicators in both directions
  // with the length of the standard deviation
  aProp.setPropertyValue("ErrorCategory", ChartErrorCategory.STANDARD_DEVIATION);
  aProp.setPropertyValue("ErrorIndicator", ChartErrorIndicatorType.TOP_AND_BOTTOM);

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