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Fix stock CDL headers for unlimited time dimension. #4827

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Jun 23, 2022
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Fix stock CDL headers for unlimited time dimension. #4827

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80d5837
Fix CDL headers for tests.stock.netcdf.
trexfeathers Jun 23, 2022
e84d7fb
Whats new entry.
trexfeathers Jun 23, 2022
7cd154c
Improved unlimited dimension check in stock NetCDF generation.
trexfeathers Jun 23, 2022
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5 changes: 5 additions & 0 deletions docs/src/whatsnew/latest.rst
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Expand Up @@ -226,6 +226,11 @@ This document explains the changes made to Iris for this release
bin in the system PATH.
(:pull:`4794`)

#. `@trexfeathers`_ and `@pp-mo`_ fixed the CDL headers for
:mod:`iris.tests.stock.netcdf` to allow generation of NetCDF-4 files with an
unlimited time dimension.
(:pull:`4827`)


.. comment
Whatsnew author names (@github name) in alphabetical order. Note that,
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4 changes: 4 additions & 0 deletions lib/iris/tests/stock/file_headers/xios_2D_face_half_levels.cdl
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Expand Up @@ -55,4 +55,8 @@ variables:
:name = "${DATASET_NAME}" ;
// original name = "lfric_ngvat_2D_1t_face_half_levels_main_conv_rain"
:Conventions = "UGRID" ;

// data
data:
time_instant = 0 ;
}
4 changes: 4 additions & 0 deletions lib/iris/tests/stock/file_headers/xios_3D_face_full_levels.cdl
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Expand Up @@ -58,4 +58,8 @@ variables:
:name = "${DATASET_NAME}" ;
// original name = "lfric_ngvat_3D_1t_full_level_face_grid_main_u3"
:Conventions = "UGRID" ;

// data
data:
time_instant = 0 ;
}
4 changes: 4 additions & 0 deletions lib/iris/tests/stock/file_headers/xios_3D_face_half_levels.cdl
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Expand Up @@ -58,4 +58,8 @@ variables:
:name = "${DATASET_NAME}" ;
// original name = "lfric_ngvat_3D_1t_half_level_face_grid_derived_theta_in_w3"
:Conventions = "UGRID" ;

// data
data:
time_instant = 0 ;
}
2 changes: 1 addition & 1 deletion lib/iris/tests/stock/netcdf.py
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Expand Up @@ -103,7 +103,7 @@ def _add_standard_data(nc_path, unlimited_dim_size=0):
ds = netCDF4.Dataset(nc_path, "r+")

unlimited_dim_names = [
dim for dim in ds.dimensions if ds.dimensions[dim].size == 0
dim for dim in ds.dimensions if ds.dimensions[dim].isunlimited()
]
# Data addition dependent on this assumption:
assert len(unlimited_dim_names) < 2
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