org.das2.qds.util

Class LttbDownsampler

java.lang.Object

org.das2.qds.util.LttbDownsampler

public final class LttbDownsampler
extends java.lang.Object

LTTB (Largest Triangle Three Buckets) downsampling for Autoplot QDataSet. Assumes: - yData is rank-1 - xData is taken from DEPEND_0 if present; otherwise x = 0,1,2,... Returns a rank-1 DDataSet with DEPEND_0 set to a rank-1 x dataset.

Method Summary

Modifier and Type	Method and Description
static QDataSet	lttb(QDataSet yData, int threshold) Downsample a 1D QDataSet with LTTB.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

lttb

public static QDataSet lttb(QDataSet yData,
                            int threshold)

Downsample a 1D QDataSet with LTTB.

Parameters:

yData - rank-1 QDataSet of y-values

threshold - desired number of points (including first and last)

Returns:

downsampled QDataSet (rank-1) with DEPEND_0 set