调用talib函数时出错

Question

File "SCTR.py", line 53, in ppoHist=ta.PPO(StockData['Last'],12,26) TypeError: Argument 'real' has incorrect type (expected numpy.ndarray, got Series)

请检查这段代码，我上面提到的错误是编译后反映出来的，我现在完全不知道。在

from nsepy import get_history
from datetime import date
import pandas as pd
import requests
from io import BytesIO 
import certifi
from dateutil.relativedelta import relativedelta
#import numpy as np
#import matplotlib.pyplot as plt
import datetime
import numpy as np
import matplotlib.colors as colors
import matplotlib.finance as finance
import matplotlib.dates as mdates
import matplotlib.ticker as mticker
import matplotlib.mlab as mlab
import matplotlib.pyplot as plt
import matplotlib.font_manager as font_manager
import talib as ta
from talib import MA_Type

url1 = 'https://www1.nseindia.com/content/indices/ind_nifty_Alpha_Index.csv'
def datainpy(url):

    headers = { 'Accept' : '*/*',
                'User-Agent' : 'Mozilla/5.0',
                'Refers' : 'http://www.nseindia.com',
                'Connection' : 'keep-alive'
              }

    getContents = requests.get(url,headers=headers).content
    symbol_list=pd.read_csv(BytesIO(getContents))

    print(symbol_list.head())

    for eachSymbol in symbol_list['Symbol'][1:8]:
        stock = get_history(symbol = eachSymbol,
                            start = date(2016,3,20),
                            end = date(2016,3,30))
        stock.drop_duplicates(inplace=True)
        stock.drop(stock.columns[[0,1,2,7,8,10,11,12,13]], axis = 1, inplace = True)
        print (stock.head())
        print(stock.head())
        stock.index=pd.to_datetime(stock.index)
        #stock.to_csv('./HistoricalData//' + eachSymbol + '.csv' , date_format='%Y%m%d')
            return stock;



StockData=datainpy(url=url1)   
print(StockData.head())
type(StockData)
ppoHist=ta.PPO(StockData['Last'],12,26)
print(ppoHist.head())

我想基本上生成SCTR（股票图表技术排名）即PPO，DMA（200），RSI等在一个csv中为“每个符号”。在

Answer 1

from nsepy import get_history
from datetime import date
import pandas as pd
import requests
from io import BytesIO 
import certifi
from dateutil.relativedelta import relativedelta
#import numpy as np
#import matplotlib.pyplot as plt
import datetime
import numpy as np
import matplotlib.colors as colors
import matplotlib.finance as finance
import matplotlib.dates as mdates
import matplotlib.ticker as mticker
import matplotlib.mlab as mlab
import matplotlib.pyplot as plt
import matplotlib.font_manager as font_manager
import talib as ta
from talib import MA_Type

#Long-Term Indicators (weighting)

#  * Percent above/below 200-day EMA (30%)
#  * 125-Day Rate-of-Change (30%)

#Medium-Term Indicators (weighting)

#  * Percent above/below 50-day EMA (15%)
#  * 20-day Rate-of-Change (15%)

# Short-Term Indicators (weighting)

#  * 3-day slope of PPO-Histogram (5%)
#  * 14-day RSI (5%)

url1 = 'https://www1.nseindia.com/content/indices/ind_nifty_Alpha_Index.csv'
def datainpy(url):

    headers = { 'Accept' : '*/*',
                'User-Agent' : 'Mozilla/5.0',
                'Refers' : 'http://www.nseindia.com',
                'Connection' : 'keep-alive'
              }

    getContents = requests.get(url,headers=headers).content
    symbol_list=pd.read_csv(BytesIO(getContents))

    print(symbol_list.head())

    for eachSymbol in symbol_list['Symbol']:
        stock = get_history(symbol = eachSymbol,
                            start = date(2000,3,20),
                            end = date(2016,3,30))
        stock.drop_duplicates(inplace=True)
        stock.drop(stock.columns[[0,1,2,7,8,10,11,12,13]], axis = 1, inplace = True)
        print (stock.head())
        print(stock.head())
        stock.index=pd.to_datetime(stock.index)
        #stock.to_csv('./HistoricalData//' + eachSymbol + '.csv' , date_format='%Y%m%d')
            return stock;



StockData=datainpy(url=url1)   
print(StockData.head())
type(StockData)
np.set_printoptions(precision=3)

ppoHist=ta.PPO(StockData['Last'].values,12,26)

RSI14=ta.RSI(StockData['Last'].values,14)

DMA200=ta.SMA(StockData['Last'].values,200)

EMA50=ta.EMA(StockData['Last'].values,14)

ROC125=ta.ROC(StockData['Last'].values,125)

ROC20=ta.ROC(StockData['Last'].values,14)

weightPctDiffOfEMA50=(((StockData['Last'].values-EMA50)*100)/StockData['Last'].values)*15

weightPctDiffOfDMA200=(((StockData['Last'].values-DMA200)*100)/StockData['Last'].values)*30

weightROC125=ROC125*30

weightROC20=ROC20*15

weightRSI14=RSI14*5

weightppoHist=ppoHist*5
print(weightppoHist)
SCTR=(weightPctDiffOfDMA200+weightPctDiffOfEMA50+weightROC125+weightROC20+weightppoHist+weightRSI14)/100

print(SCTR)

我对输出有点困惑，但这是这里要提到的。SCTR(Stock Chart Technical)。如果有，请提供更好的解决方案。在

Answer 2

看起来您正在将pandasSeries对象传递给ta.PPO，但它需要一个numpy数组。试试看

ppoHist = ta.PPO(StockData['Last'].values, 12, 26)

（免责声明：我自己没试过。我没有安装talib，我无法回答任何有关它的问题。）