overriding end date in time series plot
I plotted a time series plot with chemistry data spanning WY1979-2015, the xaxis.range hard coded as 1978-10-01 to 2015-10-01, major label was coded as "water year". The default tick span was plotting ever year and the tick labels were overlapping. I manually set tick span to 2, which caused the date axis (x-axis) to span from the start of WY1979 to the beginning of WY2015 (2014-10-10), which cut off all 2015 data points. I hardcoded the xaxis.range to then end at 2016-10-01. This caused the date axis to span from the start of WY1979 to the beginning of WY2017 (2016-10-01), which includes the 2015 data but extends the graphic longer then needed.