CSPDoji: Doji Candlestick Pattern
In candlesticks: Candlestick Pattern Recognition

Description Usage Arguments Details Value Note Author(s) References Examples

Look for Doji Pattern in a OHLC price series

1	CSPDoji(TS, maxbodyCL=.1, maxshadowCL=.1)

`TS`	xts Time Series containing Open and Close Prices
`maxbodyCL`	maximum body to length ratio, default = .1
`maxshadowCL`	maximum tolerated upper (lower) shadow to identify a dragonfly (gravestone) doji

Number of candle lines: 1
A Doji is formed when the open and the close are the same or very close. By default settings, a Doji is identified when the body of the candle is smaller or equal 1/10 of its full lenght.
The bullish Dragonfly Doji pattern has got a long lower shadow, but no upper shadow. In opposition, the bearish Gravestone Doji has got a long upper shadow but no lower shadow. Dragonfly and Gravestone Doji can be reversal signs during down/uptrends.

A xts object containing the columns:

`Doji`	TRUE if Doji pattern detected
`DragonflyDoji`	TRUE if Dragonfly Doji pattern detected
`GravestoneDoji`	TRUE if Gravestone Doji pattern detected

The function filters candles that look like dojis, without considering the current trend direction. If only doji patterns in a uptrend should be filtered, a external trend detection function must be used. See examples.

Andreas Voellenklee

The following site(s) were used to code/document this candlestick pattern:
http://www.onlinetradingconcepts.com/TechnicalAnalysis/Candlesticks/Doji.html
http://www.candlesticker.com/Bullish.asp
http://www.candlesticker.com/Bearish.asp

## Not run: 
  getSymbols('YHOO',adjust=TRUE)
  
  CSPDoji(YHOO)
  
  # filter for doji patterns that have exactly equal 
  # open and close prices
  CSPDoji(YHOO, DojiBLRatio=0)
  
  # filter for gravestone doji patterns that occur in uptrends
  CSPDoji(YHOO)[,"GravestoneDoji"] & TrendDetectionChannel(YHOO)[,"UpTrend"]

## End(Not run)