Public Overloads Sub FilterTopN( _
   ByVal pointCount As Integer, _
   ByVal inputSeries As Series, _
   ByVal outputSeries As Series, _
   ByVal usingValue As String, _
   ByVal getTopValues As Boolean _
) 

Visual Basic (Usage)	Copy Code
Dim instance As DataManipulator Dim pointCount As Integer Dim inputSeries As Series Dim outputSeries As Series Dim usingValue As String Dim getTopValues As Boolean   instance.FilterTopN(pointCount, inputSeries, outputSeries, usingValue, getTopValues)

public void FilterTopN( 
   int pointCount,
   Series inputSeries,
   Series outputSeries,
   string usingValue,
   bool getTopValues
)

Parameters

pointCount

The number of data points that the filtering operation will not remove (or mark as empty).
Number of top/bottom points to return.

inputSeries

Series object that is filtered.
Input series.

outputSeries

Series object that stores the remaining data points. If it does not exist an exception will be thrown.
Output series.

usingValue

The data point value that is examined (e.g. "X", "Y", "Y2", etc.).
Defines which value of the point use in comparison (X, Y, Y2, ...).

getTopValues

Largest values are kept if true, otherwise smallest values are kept.
Indicate that N top values must be retrieved, otherwise N bottom values.

This method removes all data points from the input series except for the specified number of points that have the largest or smallest values (depends on the getTopValues parameter).

The data point value that is examined is determined by the usingValue parameter, and the remaining points are stored in the output series.

If the specified output series has not been created and added to the SeriesCollection when this function call is made an exception will be thrown.

Filtered points can be either removed from a series (default) or displayed as empty points, depending on the FilterSetEmptyPoints value.

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference