public void TestFormulaCache()
{
IWorkbook wb = new XSSFWorkbook();
ISheet sheet = new SheetBuilder(wb, plotData).Build();
IDrawing Drawing = sheet.CreateDrawingPatriarch();
IClientAnchor anchor = Drawing.CreateAnchor(0, 0, 0, 0, 1, 1, 10, 30);
IChart chart = Drawing.CreateChart(anchor);
IChartAxis bottomAxis = chart.GetChartAxisFactory().CreateValueAxis(AxisPosition.BOTTOM);
IChartAxis leftAxis = chart.GetChartAxisFactory().CreateValueAxis(AxisPosition.LEFT);
IScatterChartData scatterChartData =
chart.GetChartDataFactory().CreateScatterChartData();
DataMarker xMarker = new DataMarker(sheet, CellRangeAddress.ValueOf("A1:E1"));
DataMarker yMarker = new DataMarker(sheet, CellRangeAddress.ValueOf("A2:E2"));
IScatterChartSerie serie = scatterChartData.AddSerie(xMarker, yMarker);
chart.Plot(scatterChartData, bottomAxis, leftAxis);
XSSFScatterChartData.Serie xssfScatterSerie =
(XSSFScatterChartData.Serie)serie;
XSSFNumberCache yCache = xssfScatterSerie.LastCalculatedYCache;
Assert.AreEqual(5, yCache.PointCount);
Assert.AreEqual(4.0, yCache.GetValueAt(3), 0.00001);
Assert.AreEqual(16.0, yCache.GetValueAt(5), 0.00001);
}
/**
* Builds new numeric cache Container.
* @param marker data marker to use for cache Evaluation
* @param ctNumRef parent number reference
* @return numeric cache instance
*/
internal static XSSFNumberCache BuildCache(DataMarker marker, CT_NumRef ctNumRef)
{
CellRangeAddress range = marker.Range;
int numOfPoints = range.NumberOfCells;
if (numOfPoints == 0)
{
// Nothing to do.
return null;
}
XSSFNumberCache cache = new XSSFNumberCache(ctNumRef.AddNewNumCache());
cache.SetPointCount(numOfPoints);
IWorkbook wb = marker.Sheet.Workbook;
IFormulaEvaluator Evaluator = wb.GetCreationHelper().CreateFormulaEvaluator();
CellWalk cellWalk = new CellWalk(marker);
NumCacheCellHandler numCacheHandler = new NumCacheCellHandler(Evaluator, cache.ctNumData);
cellWalk.Traverse(numCacheHandler);
return cache;
}
public CellWalk(DataMarker dm)
: this(dm.Sheet, dm.Range)
{
}