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Anonymous's avatar
Anonymous
Not applicable
6 years ago
Solved

Python script to DAX

Hi, I am trying to convert the below python script to DAX Calculated column:           import numpy as np dataset["OBV"] = np.where(dataset['close'] > dataset['close'].shift(1), dataset['volum...
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  • v-lili6-msft's avatar
    v-lili6-msft
    6 years ago

    hi Anonymous 

    for your requirement, you need to create two column to get your requirement:

    judgecolumn = var _yesterdaydate=CALCULATE(MAX('Table'[As of Date]),FILTER('Table','Table'[As of Date]<EARLIER('Table'[As of Date])))
var _yesterdayclose=CALCULATE(SUM('Table'[Close]),FILTER('Table','Table'[As of Date] = _yesterdaydate))
return

DIVIDE('Table'[Close]-_yesterdayclose,ABS('Table'[Close]-_yesterdayclose)) *'Table'[Volume]
    OBV = 

SUMX(FILTER('Table','Table'[As of Date]<=EARLIER('Table'[As of Date])),[judgecolumn])

     

    Result:

    For first date of your sample data, there is no yesterday OBV, so I have give a fixed value

    OBV = 

SUMX(FILTER('Table','Table'[As of Date]<=EARLIER('Table'[As of Date])),[judgecolumn])+287025018164

     

    here is sample pbix file, please try it.

     

     

    Regards,

    Lin

Anonymous's avatar
Anonymous
Not applicable
6 years ago

 Hello amitchandak 
Thanks for your response. 

 

Sample Data: Sample Data 

Input Columns: As of Date, Close, Volume

Output Column: OBV


Business Logic:

If today's close is greater than yesterday's close then:
         OBV = Yesterday’s OBV + Today’s Volume

If today’s close is less than yesterday’s close then:
         OBV = Yesterday’s OBV – Today’s Volume 

If today’s close is equal to yesterday’s close then:
         OBV = Yesterday’s OBV

 

 

Execution using Python:

 

 

 

 

 

 

 

import numpy as np
dataset["OBV"] = np.where(dataset['close'] > dataset['close'].shift(1), dataset['volume']  ,
np.where(dataset['close'] < dataset['close'].shift(1), -dataset['volume'], 0)).cumsum()

 

 

 

 

 

 

 

 

I am trying to execute the same using DAX. 

 

Let me know if you have questions!

 

Thanks,

SV

 

v-lili6-msft's avatar
v-lili6-msft
Icon for Community Support rankCommunity Support
6 years ago

hi Anonymous 

for your requirement, you need to create two column to get your requirement:

judgecolumn = var _yesterdaydate=CALCULATE(MAX('Table'[As of Date]),FILTER('Table','Table'[As of Date]<EARLIER('Table'[As of Date])))
var _yesterdayclose=CALCULATE(SUM('Table'[Close]),FILTER('Table','Table'[As of Date] = _yesterdaydate))
return

DIVIDE('Table'[Close]-_yesterdayclose,ABS('Table'[Close]-_yesterdayclose)) *'Table'[Volume]
OBV = 

SUMX(FILTER('Table','Table'[As of Date]<=EARLIER('Table'[As of Date])),[judgecolumn])

 

Result:

For first date of your sample data, there is no yesterday OBV, so I have give a fixed value

OBV = 

SUMX(FILTER('Table','Table'[As of Date]<=EARLIER('Table'[As of Date])),[judgecolumn])+287025018164

 

here is sample pbix file, please try it.

 

 

Regards,

Lin

  • Anonymous's avatar
    Anonymous
    Not applicable
    4 years ago

    Hi i need to convert this python script into dax any idea?