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Conditional Sum of Columns with repeated values
I’m trying to add columns on a time series based on if an ID has a value in a column and it is true or false. So, if an ID exists twice in the dataframe, then count the total for that ID.
ID X Y
28 12/1/2017 3
28 11/30/2017 3
28 12/1/2017 4
28 11/30/2017 7
28 12/1/2017 7
28 11/30/2017 8
28 12/1/2017 10
28 11/30/2017 11
28 12/1/2017 11
I would like the output to be something like the below. There may be multiple ID’s with the same X and Y value. For example, ID #28 has 11/30/2017, 12/1/2017, 11/30/2017 in one row but in another row there are more columns with the same data for ID 28.
ID X Y sum
28 12/1/2017 3 4
28 11/30/2017 3 7
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