carbon_footprint | Carbon Footprint Calculator made with Reactjs | Frontend Framework library
kandi X-RAY | carbon_footprint Summary
kandi X-RAY | carbon_footprint Summary
This project is an open-source about an online calculator that quantify the amount of carbon foorptint a person or small organization generate through the year. The intention of this open-source is to be coding friendly for newbies so everyone can easily contribute.
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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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