ProcessRegionalOutput: Purpose of this function is to take Output of Regional...
In djaiswal/BioCroRegional: Tools to perform Regional Simulations of BioCro

Purpose of this function is to take Output of Regional Simulations of Brazil and produce a simple fle containing mean and sd of output variables.

1 2	ProcessRegionalOutput(ResultDirectory, OutputColumnID, OutputColumnVarName, firstyear, lastyear)

`ResultDirectory`	contains all the result in .RData format
`OutputColumnID`	contains all the non-repeating output column ID in result dataframe such as soil lat, lon, ID
`OutputColumnVarName`	contains all the variables (repeating over multueple years) in the result data frame, such as stem, leaf, deadleaf
`firstyear`	is first year of simulation
`lastyear`	is lastyear of simulations