cdutil.ANNUALCYCLE.departures lopping off the final month

[chaosphere2112]

LWP_forCharles.nc.zip

@doutriaux1
There seems to be an issue with cdutil.ANNUALCYCLE.departures. It is lopping off the final month, like so:

In [1]: import cdms2 as cdms

In [2]: f=cdms.open('LWP_forCharles.nc')

In [5]: LWP_grd.shape
Out[5]: (252, 45, 180)

In [9]: anomLWP_grd = cdutil.ANNUALCYCLE.departures(LWP_grd)

In [10]: anomLWP_grd.shape
Out[10]: (251, 45, 180)

In [11]: LWP_grd.getTime()
Out[11]:
id: axis_229493
Designated a time axis.
units: months since 1988-01-01
Length: 252
First: 0.0
Last: 251.0
Other axis attributes:
calendar: gregorian
axis: T
realtopology: linear
Python id: 0x7fa604766890

In [12]: anomLWP_grd.getTime()
Out[12]:
id: time
Designated a time axis.
units: months since 1988-01-01
Length: 251
First: 0.0
Last: 250.0
Other axis attributes:
calendar: gregorian
axis: T
Python id: 0x7fa60431ee90

Note how the first dimension is shortened by 1.

Migrated from: CDAT/cdat#2014