In some cases a user may want to combine variables from a file into a single variable. Such as getting wind speed and wind direction from u and v winds as in #37, but would also be useful in calculating total precipitation from rain, snow and graupel and or resolved and parameterized components.
It would be good to have in read_forecast() a way of doing this, by passing the variables to be read and a function to combine them.
In some cases a user may want to combine variables from a file into a single variable. Such as getting wind speed and wind direction from u and v winds as in #37, but would also be useful in calculating total precipitation from rain, snow and graupel and or resolved and parameterized components.
It would be good to have in
read_forecast()a way of doing this, by passing the variables to be read and a function to combine them.