Dear All:
I have a data frame with 3 columns: "Regime", "Industry", and "Cost".
I want to sum the value of "Cost" for each industry and "Regime".
Example:
The data frame is:
Regime, Industry, Cost
10, 01, 370
11, 01, 400
10, 02, 200
10, 01, 500
11, 02, 60
10, 02, 30
I want the following output:
I have row data in a text file, where each row consists of 22 numerical
characters. Each row consists of three different column but there is no
separator. Specifically, the first two characters of the raw represent the
first column of data, the subsequent 8 characters represent the second
column
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