Add temperatures to statepoints, Material.from_hdf5

Also include material attributes to summary format documentation

docs/source/io_formats/summary.rst

@@ -116,6 +116,13 @@ The current version of the summary file format is 6.0.
            - **sab_names** (*char[][]*) -- Names of
              S(:math:`\alpha,\beta`) tables assigned to the material.
 
+:Attributes: - **volume** (*double[]*) -- Volume of this material [cm^3]. Only
+               present if ``volume`` supplied
+             - **temperature** (*double[]*) -- Temperature of this material [K].
+               Only present in ``temperature`` supplied
+             - **depletable** (*int[]*) -- ``1`` if the material can be depleted,
+               ``0`` otherwise. Always present
+
 **/nuclides/**
 
 :Attributes: - **n_nuclides** (*int*) -- Number of nuclides in the problem.

openmc/material.py

@@ -287,6 +287,8 @@ class Material(IDManagerMixin):
         material.depletable = bool(group.attrs['depletable'])
         if 'volume' in group.attrs:
             material.volume = group.attrs['volume']
+        if "temperature" in group.attrs:
+            material.temperature = group.attrs["temperature"]
 
         # Read the names of the S(a,b) tables for this Material and add them
         if 'sab_names' in group:

src/material.cpp

@@ -898,6 +898,9 @@ void Material::to_hdf5(hid_t group) const
   if (volume_ > 0.0) {
     write_attribute(material_group, "volume", volume_);
   }
+  if (temperature_ > 0.0) {
+    write_attribute(material_group, "temperature", temperature_);
+  }
   write_dataset(material_group, "name", name_);
   write_dataset(material_group, "atom_density", density_);