Answers for "pd.resample"

Python

resample pandas

df.resample("W").agg(['min','max','mean','std'])

#  resample("3T") ==> 3 minutes
#  resample("30S") ==> 30 seconds
#  resample("1H") ==> 1 hour
#  resample("D") ==> day
#  resample("W") ==> week
#  resample("M") ==> month
#  resample("Y") ==> year  
#  resample("Q") ==> quarter
#  Ex. 2018-01-01 ==> 2018-03-01 , 2018-06-01 , 2018-09-01 , 2018-12-01 
#####################################
#  .mean() 
#  .max()
#  .min() 
#  .sum()
......
#  .agg(['min','max',...]) specified functions are applied for every column

Posted by: Guest on September-25-2021

resample ohlc pandas

In [101]: df.resample('1H').agg({'openbid': 'first', 
                                 'highbid': 'max', 
                                 'lowbid': 'min', 
                                 'closebid': 'last'})
Out[101]: 
                      lowbid  highbid  closebid  openbid
ctime                                                   
2015-09-30 23:00:00  1.11687  1.11712   1.11708    1.117

Posted by: Guest on May-16-2021

Source

how i resamplae a datetime column in python

>>> d = dict({'price': [10, 11, 9, 13, 14, 18, 17, 19],
...           'volume': [50, 60, 40, 100, 50, 100, 40, 50]})
>>> df = pd.DataFrame(d)
>>> df['week_starting'] = pd.date_range('01/01/2018',
...                                     periods=8,
...                                     freq='W')
>>> df
   price  volume week_starting
0     10      50    2018-01-07
1     11      60    2018-01-14
2      9      40    2018-01-21
3     13     100    2018-01-28
4     14      50    2018-02-04
5     18     100    2018-02-11
6     17      40    2018-02-18
7     19      50    2018-02-25
# try below code when you want resample on datetime column to other all columns in dataframe
>>> df.resample('M', on='week_starting').mean() 
               price  volume
week_starting
2018-01-31     10.75    62.5
2018-02-28     17.00    60.0

Posted by: Guest on October-25-2020

Source

resample ohlc pandas

data_ask_bid=pd.concat([data_ask, data_bid], axis=1, keys=['Ask', 'Bid'])

Posted by: Guest on June-13-2020

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