How to do some calculation between Columns in spark Dataframe?

Question

For example, I want to plus the la and lon column and output result in another column.

+------+------------------+------------------+
|userid|               la |         


        

Answer 1

If you just need to sum two columns together, it's pretty straightforward :

df.withColumn("x", $"la" + $"lon")

x is the name of the new column.

To elevate the column into the power of 2 :

df.withColumn("x", pow($"la" + $"lon", 2))