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CrossUnderBar: Indicator Documentation


DataSeries CrossUnderBar( DataSeries ds1, DataSeries ds2 );

Parameter Description

ds1 First data series
ds2 Second data series


CrossUnderBar(DataSeries1, DataSeries2) returns the most recent bar where DataSeries1 crossed under DataSeries2. No check is made about a possible subsequent CrossOver.


This example illustrates how to plot and call the CrossUnderBar series. The entry is made when Close has crossed under the Upper Bollinger Band within last 3 bars, and it is currently under the same band:

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using WealthLab.Indicators;
using Community.Indicators;

namespace WealthLab.Strategies { public class XUBStrategy : WealthScript { protected override void Execute() { BBandUpper bbU = BBandUpper.Series( Close, 20, 2 ); CrossUnderBar xub = CrossUnderBar.Series( Close, bbU ); SetBarColors( Color.Silver, Color.Silver ); for (int bar = xub.FirstValidValue; bar < Bars.Count; bar++) { if( xub[bar] == bar ) SetBarColor( bar, Color.Blue ); if (IsLastPositionActive) { SellAtStop( bar+1, LastPosition, Lowest.Series( Low, 20 )[bar] ); } else { if( ( Close[bar] < bbU[bar] ) & ( xub[bar] > bar - 3 ) ) BuyAtMarket( bar+1 ); } } ChartPane xPane = CreatePane( 20, true, true ); PlotSeries( xPane, xub, Color.Blue, WealthLab.LineStyle.Dashed, 2 ); PlotSeries( PricePane, bbU, Color.Blue, WealthLab.LineStyle.Solid, 1 ); } } }

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