In [1]:

    

import iris
import time


    

In [2]:

    

iris.__version__


    

    
Out[2]:





'1.8.1'

In [3]:

    

%%timeit -r 3

url='http://geoport.whoi.edu/thredds/dodsC/coawst_4/use/fmrc/coawst_4_use_best.ncd'
var='sea_water_potential_temperature'

cube = iris.load_cube(url,var)


    

    




/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/cf.py:1040: UserWarning: Ignoring formula terms variable u'h' referenced by data variable u'v' via variable u's_rho': Dimensions (u'eta_rho', u'xi_rho') do not span (u'time', u's_rho', u'eta_v', u'xi_v')
  warnings.warn(msg)
/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/cf.py:1040: UserWarning: Ignoring formula terms variable u'zeta' referenced by data variable u'v' via variable u's_rho': Dimensions (u'time', u'eta_rho', u'xi_rho') do not span (u'time', u's_rho', u'eta_v', u'xi_v')
  warnings.warn(msg)
/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/cf.py:1040: UserWarning: Ignoring formula terms variable u'h' referenced by data variable u'u' via variable u's_rho': Dimensions (u'eta_rho', u'xi_rho') do not span (u'time', u's_rho', u'eta_u', u'xi_u')
  warnings.warn(msg)
/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/cf.py:1040: UserWarning: Ignoring formula terms variable u'zeta' referenced by data variable u'u' via variable u's_rho': Dimensions (u'time', u'eta_rho', u'xi_rho') do not span (u'time', u's_rho', u'eta_u', u'xi_u')
  warnings.warn(msg)
/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/_pyke_rules/compiled_krb/fc_rules_cf_fc.py:1395: UserWarning: Gracefully filling 'time' dimension coordinate masked points
  warnings.warn(msg.format(str(cf_coord_var.cf_name)))






    




1 loops, best of 3: 10.9 s per loop






    




/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/netcdf.py:441: UserWarning: Unable to find coordinate for variable u'zeta'
  '{!r}'.format(name))
/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/netcdf.py:441: UserWarning: Unable to find coordinate for variable u'h'
  '{!r}'.format(name))
/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/iris/fileformats/netcdf.py:558: UserWarning: Unable to construct Ocean s-coordinate, generic form 1 factory due to insufficient source coordinates.
  warnings.warn('{}'.format(e))

In [4]:

    

%%timeit -r 3
url='http://geoport.whoi.edu/thredds/dodsC/coawst_4/use/fmrc/coawst_4_use_best.ncd'
var='sea_water_potential_temperature'
cube = iris.load_raw(url,var)


    

    




---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-4-6b982560a57d> in <module>()
----> 1 get_ipython().run_cell_magic(u'timeit', u'-r 3', u'\ncube = iris.load_raw(url,var)')

/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in run_cell_magic(self, magic_name, line, cell)
   2160             magic_arg_s = self.var_expand(line, stack_depth)
   2161             with self.builtin_trap:
-> 2162                 result = fn(magic_arg_s, cell)
   2163             return result
   2164 

/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/IPython/core/magics/execution.pyc in timeit(self, line, cell)

/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/IPython/core/magic.pyc in <lambda>(f, *a, **k)
    191     # but it's overkill for just that one bit of state.
    192     def magic_deco(arg):
--> 193         call = lambda f, *a, **k: f(*a, **k)
    194 
    195         if callable(arg):

/home/usgs/miniconda/envs/ioos/lib/python2.7/site-packages/IPython/core/magics/execution.pyc in timeit(self, line, cell)
   1011             number = 1
   1012             for _ in range(1, 10):
-> 1013                 if timer.timeit(number) >= 0.2:
   1014                     break
   1015                 number *= 10

/home/usgs/miniconda/envs/ioos/lib/python2.7/timeit.pyc in timeit(self, number)
    199         gc.disable()
    200         try:
--> 201             timing = self.inner(it, self.timer)
    202         finally:
    203             if gcold:

<magic-timeit> in inner(_it, _timer)

NameError: global name 'url' is not defined

In [ ]:

    

import netCDF4


    

In [ ]:

    

%%timeit -r 3
url='http://geoport.whoi.edu/thredds/dodsC/coawst_4/use/fmrc/coawst_4_use_best.ncd'
nc = netCDF4.Dataset(url)
t = nc.variables['temp']
lon = nc.variables['lon_rho']
lat = nc.variables['lat_rho']
tvar = nc.variables['time']
z = nc.variables['s_rho']


    

In [ ]: