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Update MyTT.py #26

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Update MyTT.py #26

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4 changes: 2 additions & 2 deletions MyTT.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
# V2.92 2021-11-30 新增 BARSSINCEN函数,现在可以 pip install MyTT 完成安装
# V3.0 2021-12-04 改进 DMA函数支持序列,新增XS2 薛斯通道II指标
# V3.1 2021-12-19 新增 TOPRANGE,LOWRANGE一级函数
# V3.2 2022-03-15 修正 DMA函数

#以下所有函数如无特别说明，输入参数S均为numpy序列或者列表list，N为整型int
#应用层1级函数完美兼容通达信或同花顺，具体使用方法请参考通达信
Expand Down Expand Up @@ -70,7 +70,7 @@ def WMA(S, N): #通达信S序列的N日加权移动平均 Yn = (1*X1+

def DMA(S, A): #求S的动态移动平均，A作平滑因子,必须 0<A<1 (此为核心函数，非指标）
if isinstance(A,(int,float)): return pd.Series(S).ewm(alpha=A,adjust=False).mean().values
A=np.array(A); A[np.isnan(A)]=1.0; Y= np.zeros(len(S)); Y[0]=S[0]
A=np.array(A); A[np.isnan(A)]=0.0; Y= np.zeros(len(S)); Y[0]=S[0] #A中的nan填充为0 by zl
for i in range(1,len(S)): Y[i]=A[i]*S[i]+(1-A[i])*Y[i-1] #A支持序列 by jqz1226
return Y

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