TA-Lib是一个被广泛应用于交易软件、金融市场数据进行技术分析的工具，它提供了C/C++, Java, Perl, Python 以及.NET等语言的支持接口。
然而API函数明显地充斥着C语言的风格，对于Java等面向对象语言开发者不太友好，因此在本人对TA-Lib进行了二次封装，以符合Java语言的规范。其次，对官网的一些函数进行了分类介绍以方便没有相关行业背景的开发者进行使用。
TA-Lib官网 ：http://ta-lib.org/
相关文档：http://ta-lib.org/d_api/d_api.html
Maven用户：
<dependency>
<groupId>org.clojars.edbond</groupId>
<artifactId>talib</artifactId>
<version>0.5.0</version>
</dependency>Gradle用户：
compile group: 'org.clojars.edbond', name: 'talib', version: '0.5.0'一般用户：jar包地址
数组求和sum:
import com.tictactec.ta.lib.Core;
import com.tictactec.ta.lib.MInteger;
import com.tictactec.ta.lib.RetCode;
/**
* @Description
* @author Aven Liu
* @version 0.01
*/
public class HelloWorld {
public static void main(String[] args) {
double[] inReal = { 1, 2, 3, 4, 5, 6, 7 };
int beginIdx = 0, endIdx = inReal.length, slidingWindow = inReal.length;
MInteger outBegIdx = new MInteger();
MInteger outNBElement = new MInteger();
int retSize = endIdx - beginIdx - slidingWindow + 1;
double[] outReal = new double[retSize];
Core core = new Core();
RetCode retCode = core.sum(beginIdx, endIdx - 1, inReal, slidingWindow, outBegIdx, outNBElement, outReal);
if (retCode.equals(RetCode.Success)) {
System.out.println(outReal[0]);
}
}
}TA-Lib的API看起来是相当繁琐的，其中Core为TA-Lib的核心类库，其中定义的所有的方法都封装在这个类中，共计501个，方法调用的一般格式如下：
public RetCode sum(int startIdx,
int endIdx,
double inReal[],
int optInTimePeriod,
MInteger outBegIdx,
MInteger outNBElement,
double outReal[])- startIdx与endIdx为需要进行计算的数组inReal的范围，值得注意的是与Java一般习惯不同的是Ta-Lib包括了endIdx在内。
- inReal 输入计算数组
- optInTimePeriod：可以理解为滑动窗口的大小
- outBegIdx 输出结果outReal的开始下标
- outNBElement 输出结果outReal的数目
- outReal 为输出结果数组
MInteger为Ta-Lib自定义的 Integer的一个包装类，以方便修改Integer的值，其定义如下：
public class MInteger{
public int value;
}返回值 RetCode 为枚举类，其定义如下：
public enum RetCode{
Success,
BadParam,
OutOfRangeStartIndex,
OutOfRangeEndIndex,
AllocErr,
InternalError
};TA-Lib常用的指标及函数可以参考官网： http://ta-lib.org/function.html
Core中的函数共计501个，这些函数分为以下9大类：
---------三角函数---------
SIN 正弦
COS 余弦
TAN 正切
ASIN 反正弦
ACOS 反余弦
ATAN 反正切值
SINH 双曲正弦
COSH 双曲正弦
TANH 双曲正切
----指数、对数、取整、根号----
EXP 指数曲线
LN 自然对数
LOG10 以10为低的对数
SQRT 非负实数的平方根
CEIL 向上取整数
FLOOR 向下取整数
-----向量(一维数组)运算-----
ADD 向量加法
SUB 向量减法
MULT 向量乘法
DIV 向量除法
SUM 求和
MAX 最大值
MIN 最小值
MAXINDEX 最大值的索引
MININDEX 最小值的索引
MINMAX 最小值和最大值
MINMAXINDEX 最小值和最大值索引
VAR 方差（Variance）
STDDEV 标准偏差（Standard Deviation）
BETA β系数，贝塔系数（Beta）
CORREL 皮尔逊相关系数（Pearson's Correlation Coefficient）
LINEARREG 线性回归（Linear Regression）
LINEARREG_ANGLE 线性回归的角度（Linear Regression Angle）
LINEARREG_INTERCEPT 线性回归截距 （Linear Regression Intercept）
LINEARREG_SLOPE 线性回归斜率指标（Linear Regression Slope）
TSF 时间序列预测（Time Series Forecast）
BBANDS Bollinger Bands
DEMA Double Exponential Moving Average
EMA Exponential Moving Average
HT_TRENDLINE Hilbert Transform - Instantaneous Trendline
KAMA Kaufman Adaptive Moving Average
MA Moving average
MAMA MESA Adaptive Moving Average
MAVP Moving average with variable period
MIDPOINT MidPoint over period
MIDPRICE Midpoint Price over period
SAR Parabolic SAR
SAREXT Parabolic SAR - Extended
SMA Simple Moving Average
T3 Triple Exponential Moving Average (T3)
TEMA Triple Exponential Moving Average
TRIMA Triangular Moving Average
WMA Weighted Moving Average
ADX Average Directional Movement Index
ADXR Average Directional Movement Index Rating
APO Absolute Price Oscillator
AROON Aroon
AROONOSC Aroon Oscillator
BOP Balance Of Power
CCI Commodity Channel Index
CMO Chande Momentum Oscillator
DX Directional Movement Index
MACD Moving Average Convergence/Divergence
MACDEXT MACD with controllable MA type
MACDFIX Moving Average Convergence/Divergence Fix 12/26
MFI Money Flow Index
MINUS_DI Minus Directional Indicator
MINUS_DM Minus Directional Movement
MOM Momentum
PLUS_DI Plus Directional Indicator
PLUS_DM Plus Directional Movement
PPO Percentage Price Oscillator
ROC Rate of change : ((price/prevPrice)-1)*100
ROCP Rate of change Percentage: (price-prevPrice)/prevPrice
ROCR Rate of change ratio: (price/prevPrice)
ROCR100 Rate of change ratio 100 scale: (price/prevPrice)*100
RSI Relative Strength Index
STOCH Stochastic
STOCHF Stochastic Fast
STOCHRSI Stochastic Relative Strength Index
TRIX 1-day Rate-Of-Change (ROC) of a Triple Smooth EMA
ULTOSC Ultimate Oscillator
WILLR Williams' %R
AD Chaikin A/D Line
ADOSC Chaikin A/D Oscillator
OBV On Balance Volume
ATR Average True Range
NATR Normalized Average True Range
TRANGE True Range
AVGPRICE Average Price
MEDPRICE Median Price
TYPPRICE Typical Price
WCLPRICE Weighted Close Price
HT_DCPERIOD Hilbert Transform - Dominant Cycle Period
HT_DCPHASE Hilbert Transform - Dominant Cycle Phase
HT_PHASOR Hilbert Transform - Phasor Components
HT_SINE Hilbert Transform - SineWave
HT_TRENDMODE Hilbert Transform - Trend vs Cycle Mode
CDL2CROWS Two Crows
CDL3BLACKCROWS Three Black Crows
CDL3INSIDE Three Inside Up/Down
CDL3LINESTRIKE Three-Line Strike
CDL3OUTSIDE Three Outside Up/Down
CDL3STARSINSOUTH Three Stars In The South
CDL3WHITESOLDIERS Three Advancing White Soldiers
CDLABANDONEDBABY Abandoned Baby
CDLADVANCEBLOCK Advance Block
CDLBELTHOLD Belt-hold
CDLBREAKAWAY Breakaway
CDLCLOSINGMARUBOZU Closing Marubozu
CDLCONCEALBABYSWALL Concealing Baby Swallow
CDLCOUNTERATTACK Counterattack
CDLDARKCLOUDCOVER Dark Cloud Cover
CDLDOJI Doji
CDLDOJISTAR Doji Star
CDLDRAGONFLYDOJI Dragonfly Doji
CDLENGULFING Engulfing Pattern
CDLEVENINGDOJISTAR Evening Doji Star
CDLEVENINGSTAR Evening Star
CDLGAPSIDESIDEWHITE Up/Down-gap side-by-side white lines
CDLGRAVESTONEDOJI Gravestone Doji
CDLHAMMER Hammer
CDLHANGINGMAN Hanging Man
CDLHARAMI Harami Pattern
CDLHARAMICROSS Harami Cross Pattern
CDLHIGHWAVE High-Wave Candle
CDLHIKKAKE Hikkake Pattern
CDLHIKKAKEMOD Modified Hikkake Pattern
CDLHOMINGPIGEON Homing Pigeon
CDLIDENTICAL3CROWS Identical Three Crows
CDLINNECK In-Neck Pattern
CDLINVERTEDHAMMER Inverted Hammer
CDLKICKING Kicking
CDLKICKINGBYLENGTH Kicking - bull/bear determined by the longer marubozu
CDLLADDERBOTTOM Ladder Bottom
CDLLONGLEGGEDDOJI Long Legged Doji
CDLLONGLINE Long Line Candle
CDLMARUBOZU Marubozu
CDLMATCHINGLOW Matching Low
CDLMATHOLD Mat Hold
CDLMORNINGDOJISTAR Morning Doji Star
CDLMORNINGSTAR Morning Star
CDLONNECK On-Neck Pattern
CDLPIERCING Piercing Pattern
CDLRICKSHAWMAN Rickshaw Man
CDLRISEFALL3METHODS Rising/Falling Three Methods
CDLSEPARATINGLINES Separating Lines
CDLSHOOTINGSTAR Shooting Star
CDLSHORTLINE Short Line Candle
CDLSPINNINGTOP Spinning Top
CDLSTALLEDPATTERN Stalled Pattern
CDLSTICKSANDWICH Stick Sandwich
CDLTAKURI Takuri (Dragonfly Doji with very long lower shadow)
CDLTASUKIGAP Tasuki Gap
CDLTHRUSTING Thrusting Pattern
CDLTRISTAR Tristar Pattern
CDLUNIQUE3RIVER Unique 3 River
CDLUPSIDEGAP2CROWS Upside Gap Two Crows
CDLXSIDEGAP3METHODS Upside/Downside Gap Three Methods
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