//@Name:Three Black Crows //@Description:Returns 1 if displaying a three black crows pattern //@Width:60 //@Env:Production //Modified by: Rebecca Farndale, ShareScope Support var lookBack = 1; var dataSource = 15; var dataList = ["1m","2m","2.5m","3m","4m","5m","6m","10m","15m","20m","30m","1h","2h","3h","4h","Daily","Weekly","Monthly"]; var useIntra = 1; function init(status) { if (status == Loading || status == Editing) { dataSource = storage.getAt(1); lookBack = storage.getAt(2); useIntra = storage.getAt(3); } if (status == Adding || status == Editing) { dlg = new Dialog("Select Data Type", 160, 60); dlg.addOkButton(-1,-1,-1,-1); dlg.addCancelButton(); dlg.addDropList("DL1",8,-1,80,-1,dataList,"","",15); dlg.addIntEdit("INT1",40,-1,-1,-1,"Look back","periods",1,1,1000); dlg.addTickBox("TB1",8,-1,150,-1,"Include latest intraday",useIntra); if (dlg.show()==Dialog.Cancel) return false; dataSource = dlg.getValue("DL1"); lookBack = dlg.getValue("INT1"); useIntra = dlg.getValue("TB1"); } setTitle("Three Black Crows"); } function getVal(share) { var data = getData(share,dataSource,useIntra,lookBack+5); if (data.length < (lookBack + 4)) return; //returns if not enough data for (i=data.length-1;i>data.length - (lookBack+1); i--) { candle0 = data[i-3]; candle1 = data[i-2]; candle2 = data[i-1]; candle3 = data[i]; if (candle0.close > candle0.open && isCorrectShape(candle1) ==1 && isCorrectShape(candle2) ==1 && isCorrectShape(candle3)==1)//3 white candles with closes near high { if(candle3.close< candle2.close && candle2.close= candle3.open && candle3.open >= candle2.close) //candle 3 opens within candle 2 body { if(candle1.open >= candle2.open && candle2.open >= candle1.close ) return 1; //candle 2 opens within candle 1 body } } } } return 0; } function isCorrectShape(candle) { lowPercent = (candle.close-candle.low)/(candle.open-candle.close) -1 highPercent = (candle.high-candle.open)/(candle.open-candle.close) -1 if (candle.open > candle.close && lowPercent<0.01 && highPercent<0.01) return 1; else return 0; } function getData(share,dataType,useIntra,arrayLength) { if (dataType<15) { switch (dataType) { case 0: var dataPeriod = 1; break; case 1: var dataPeriod = 2; break; case 2: var dataPeriod = 2.5; break; case 3: var dataPeriod = 3; break; case 4: var dataPeriod = 4; break; case 5: var dataPeriod = 5; break; case 6: var dataPeriod = 6; break; case 7: var dataPeriod = 10; break; case 8: var dataPeriod = 15; break; case 9: var dataPeriod = 20; break; case 10: var dataPeriod = 30; break; case 11: var dataPeriod = 60; break; case 12: var dataPeriod = 120; break; case 13: var dataPeriod = 180; break; case 14: var dataPeriod = 240; break; } if (arrayLength) var daysNeeded = Math.ceil(dataPeriod * arrayLength/ 510); else var daysNeeded = 1; var eodData = share.getPriceArray(); if (eodData.length=0;i--) { tempData = share.getIBarArray(i,dataPeriod*60); if (tempData==undefined || tempData.length<1) continue; data = data.concat(share.getIBarArray(i,dataPeriod*60)); } if (data==undefined || data[0]==undefined || data.length<2) return []; } else if (dataType==15 && useIntra==0) var data = share.getPriceArray(); else if (dataType==16 && useIntra==0) var data = share.getWeeklyBarArray(); else if (dataType==17 && useIntra==0) var data = share.getMonthlyBarArray(); //daily else if (dataType==15 && useIntra==1) { var data = share.getPriceArray(); if (data.length<2) return []; var idata = share.getIBarArray(0,86400); if (idata!=undefined && idata.length==1 && new Date().getDate()==idata[0].date.getDate() && new Date().getDate()!=data[data.length-1].date.getDate()) { data[data.length]={ open:share.getIOpen(), high:idata[0].high, low:idata[0].low, close:(share.getIClose()==null?share.getIMid():share.getIClose()), volume:idata[0].volume, dateNum:idata[0].dateNum, date:idata[0].date}; } } //weekly else if (dataType==16 && useIntra==1) { var data = share.getWeeklyBarArray(); if (data.length<2) return []; var idata = share.getIBarArray(0,86400); if (idata!=undefined && idata.length==1 && new Date().getDate()==idata[0].date.getDate() && new Date().getDate()!=data[data.length-1].date.getDate()) { if (idata[0].date.getDay()data[data.length-1].high?idata[0].high:data[data.length-1].high), low:(idata[0].lowdata[data.length-1].high?idata[0].high:data[data.length-1].high), low:(idata[0].lowtempData[tempData.length-1].high?idata[0].high:tempData[tempData.length-1].high), low:(idata[0].lowdata[data.length-1].high?tempData[i].high:data[data.length-1].high), low:(tempData[i].low