carbon_footprint | Calculate your carbon footprint | Analytics library
kandi X-RAY | carbon_footprint Summary
kandi X-RAY | carbon_footprint Summary
Calculate your carbon footprint easily using a command line interface. Built by Protea, the world's leading social network community to reduce your effect on the climate.
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QUESTION
I have a dataframe of trips with a column of how the trip was made similar to column "a" below.
My goal is to add a new column of data to each row according to the value of column "a".
The function below works, but seems like an overly complicated way of accomplishing a fairly simple objective.
new_var <- 0
seems likely to cause a bug.
If I don't attach the dataframe and call the column that way the function does not work, which is obviously not great.
Is there an obviously better way to do this?
...ANSWER
Answered 2018-Dec-31 at 11:34With the named vector, we can match the column to get the values
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