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49 lines
1.6 KiB
ReStructuredText
49 lines
1.6 KiB
ReStructuredText
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.. _hdf5_tut_ex2:
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Example 2 : A Green function
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----------------------------------------------
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What about more complex objects ?
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The good news is that **hdf-compliant** objects can be stored easily as well.
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We can store a Green function in an hdf5 file :download:`[file] <./tut_ex2.py>`:
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.. literalinclude:: tut_ex2.py
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Of course, we can retrieve G as easily :download:`[file] <./tut_ex2b.py>`:
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.. literalinclude:: tut_ex2b.py
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The structure of the HDF file is this time ::
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MAC:~>h5ls -r myfile.h5
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/ Group
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/g1 Group
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/g1/Data Dataset {2, 2, 1000}
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/g1/Indices Dataset {2}
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/g1/Mesh Group
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/g1/Mesh/Beta Dataset {SCALAR}
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/g1/Mesh/Statistic Dataset {SCALAR}
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/g1/Mesh/TypeGF Dataset {SCALAR}
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/g1/Mesh/array Dataset {1000}
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/g1/Name Dataset {SCALAR}
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/g1/Note Dataset {SCALAR}
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/g1/Tail Group
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/g1/Tail/Indices Dataset {2}
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/g1/Tail/OrderMax Dataset {SCALAR}
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/g1/Tail/OrderMaxMAX Dataset {SCALAR}
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/g1/Tail/OrderMinMIN Dataset {SCALAR}
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/g1/Tail/array Dataset {13, 2, 2}
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/mu Dataset {SCALAR}
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.. hint:: How does this work ?
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The Green function implements (as detailed in :ref:`HDF_Protocol`)
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* a method :func:`__reduce_to_dict__` that reduces to the Green function to a dictionary containing a mesh (Mesh), a tail (Tail), the data (Data), the indices (Indices) and so on.
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* a classmethod :func:`__factory_from_dict__` that reconstructs the Green function from this dictionary.
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