Return subsets of data from each year, which is in given
time interval between startDate and endDate.
seasonFilter(data, startDate, endDate)A data.frame with inputted data and additional
column 'BATCH' indicates which subset of inputted data is located
within given time interval. In column 'BATCH', different integers
stands for different segments and 0 stands for outside given time
interval.
The data be filtered, which has the same format
as the output from transfData.
Start point and end point of time interval during a year, which has the format "MM-DD".
Chaoran Hu