Write attribute
H5A.write(attr_id,type_id,buf)
H5A.write(attr_id,type_id,buf) writes the
data in buf into the attribute specified by attr_id. type_id specifies
the attribute's memory datatype. The memory datatype should be 'H5ML_DEFAULT',
which specifies that MATLAB® should determine the appropriate
memory datatype.
Note
The HDF5 library uses C-style ordering for multidimensional arrays, while MATLAB uses FORTRAN-style ordering. If the MATLAB array size is 5-by-4-by-3, then the HDF5 library should be reporting the attribute size as 3-by-4-by-5. Please consult "Using the MATLAB Low-Level HDF5 Functions" in the MATLAB documentation for more information.
Write a scalar double precision attribute.
acpl = H5P.create('H5P_ATTRIBUTE_CREATE'); type_id = H5T.copy('H5T_NATIVE_DOUBLE'); space_id = H5S.create('H5S_SCALAR'); fid = H5F.create('myfile.h5'); attr_id = H5A.create(fid,'my_attr',type_id,space_id,acpl); H5A.write(attr_id,'H5ML_DEFAULT',10.0) H5A.close(attr_id); H5F.close(fid); H5T.close(type_id);