Python _update_bounds_attributes示例

示例#1

文件： test_coding_times.py 项目： ectof/xarray

def test_decode_cf_time_bounds():

    da = DataArray(np.arange(6, dtype='int64').reshape((3, 2)),
                   coords={'time': [1, 2, 3]},
                   dims=('time', 'nbnd'), name='time_bnds')

    attrs = {'units': 'days since 2001-01',
             'calendar': 'standard',
             'bounds': 'time_bnds'}

    ds = da.to_dataset()
    ds['time'].attrs.update(attrs)
    _update_bounds_attributes(ds.variables)
    assert ds.variables['time_bnds'].attrs == {'units': 'days since 2001-01',
                                               'calendar': 'standard'}
    dsc = decode_cf(ds)
    assert dsc.time_bnds.dtype == np.dtype('M8[ns]')
    dsc = decode_cf(ds, decode_times=False)
    assert dsc.time_bnds.dtype == np.dtype('int64')

    # Do not overwrite existing attrs
    ds = da.to_dataset()
    ds['time'].attrs.update(attrs)
    bnd_attr = {'units': 'hours since 2001-01', 'calendar': 'noleap'}
    ds['time_bnds'].attrs.update(bnd_attr)
    _update_bounds_attributes(ds.variables)
    assert ds.variables['time_bnds'].attrs == bnd_attr

    # If bounds variable not available do not complain
    ds = da.to_dataset()
    ds['time'].attrs.update(attrs)
    ds['time'].attrs['bounds'] = 'fake_var'
    _update_bounds_attributes(ds.variables)

示例#2

文件： test_coding_times.py 项目： benbovy/xarray

def test_decode_cf_time_bounds():

    da = DataArray(np.arange(6, dtype='int64').reshape((3, 2)),
                   coords={'time': [1, 2, 3]},
                   dims=('time', 'nbnd'), name='time_bnds')

    attrs = {'units': 'days since 2001-01',
             'calendar': 'standard',
             'bounds': 'time_bnds'}

    ds = da.to_dataset()
    ds['time'].attrs.update(attrs)
    _update_bounds_attributes(ds.variables)
    assert ds.variables['time_bnds'].attrs == {'units': 'days since 2001-01',
                                               'calendar': 'standard'}
    dsc = decode_cf(ds)
    assert dsc.time_bnds.dtype == np.dtype('M8[ns]')
    dsc = decode_cf(ds, decode_times=False)
    assert dsc.time_bnds.dtype == np.dtype('int64')

    # Do not overwrite existing attrs
    ds = da.to_dataset()
    ds['time'].attrs.update(attrs)
    bnd_attr = {'units': 'hours since 2001-01', 'calendar': 'noleap'}
    ds['time_bnds'].attrs.update(bnd_attr)
    _update_bounds_attributes(ds.variables)
    assert ds.variables['time_bnds'].attrs == bnd_attr

    # If bounds variable not available do not complain
    ds = da.to_dataset()
    ds['time'].attrs.update(attrs)
    ds['time'].attrs['bounds'] = 'fake_var'
    _update_bounds_attributes(ds.variables)

示例#3

文件： test_coding_times.py 项目： zmoon/xarray

def test_decode_cf_time_bounds():

    da = DataArray(
        np.arange(6, dtype="int64").reshape((3, 2)),
        coords={"time": [1, 2, 3]},
        dims=("time", "nbnd"),
        name="time_bnds",
    )

    attrs = {
        "units": "days since 2001-01",
        "calendar": "standard",
        "bounds": "time_bnds",
    }

    ds = da.to_dataset()
    ds["time"].attrs.update(attrs)
    _update_bounds_attributes(ds.variables)
    assert ds.variables["time_bnds"].attrs == {
        "units": "days since 2001-01",
        "calendar": "standard",
    }
    dsc = decode_cf(ds)
    assert dsc.time_bnds.dtype == np.dtype("M8[ns]")
    dsc = decode_cf(ds, decode_times=False)
    assert dsc.time_bnds.dtype == np.dtype("int64")

    # Do not overwrite existing attrs
    ds = da.to_dataset()
    ds["time"].attrs.update(attrs)
    bnd_attr = {"units": "hours since 2001-01", "calendar": "noleap"}
    ds["time_bnds"].attrs.update(bnd_attr)
    _update_bounds_attributes(ds.variables)
    assert ds.variables["time_bnds"].attrs == bnd_attr

    # If bounds variable not available do not complain
    ds = da.to_dataset()
    ds["time"].attrs.update(attrs)
    ds["time"].attrs["bounds"] = "fake_var"
    _update_bounds_attributes(ds.variables)