petsc-3.12.4 2020-02-04
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# PetscViewerHDF5ReadObjectAttribute

Read an attribute from the dataset matching the given PetscObject by name

### Synopsis

    #include "petscviewerhdf5.h"
    PetscErrorCode PetscViewerHDF5ReadObjectAttribute(PetscViewer viewer, PetscObject obj, const char name[], PetscDataType datatype, void *value)

### Input Parameters

| viewer | - The HDF5 viewer
| obj | - The object whose name is used to lookup the parent dataset, relative to the current group.
| name | - The attribute name
| datatype | - The attribute type

### Output Parameter

value -The attribute value

### Notes

This fails if current_group/object_name doesn't resolve to a dataset (the path doesn't exist or is not a dataset). You might want to check first if it does using PetscViewerHDF5HasObject().

### See Also

PetscViewerHDF5Open(), PetscViewerHDF5ReadAttribute() PetscViewerHDF5WriteObjectAttribute(), PetscViewerHDF5HasObjectAttribute(), PetscViewerHDF5PushGroup(),PetscViewerHDF5PopGroup(),PetscViewerHDF5GetGroup()

### Level

advanced

### Location

src/sys/classes/viewer/impls/hdf5/hdf5v.c
Index of all Viewer routines
Table of Contents for all manual pages
Index of all manual pages