Matthias, All HDF5 fortran programs require h5open_f call to initialize the Fortran interface before calling any HDF5 Fortran subroutines:
CALL h5open_f(error) Please see Fortran examples we provide at http://www.hdfgroup.org/HDF5/examples Elena ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Elena Pourmal The HDF Group http://hdfgroup.org 1800 So. Oak St., Suite 203, Champaign IL 61820 217.531.6112 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ On Oct 1, 2013, at 5:36 AM, Matthias Springer <[email protected]> wrote: > Dear Forum members, > > I am trying to read an integer attribute in an hdf5 file. H5aread_f shows > following error: > > HDF5-DIAG: Error detected in HDF5 (1.8.8) thread 0: > #000: ../../hdf5-1.8.8/src/H5A.c line 1079 in H5Aread(): not a datatype > major: Invalid arguments to routine > minor: Inappropriate type > > Source code is: > > c####################################################################### > subroutine read_hdf5(h5filename) > c####################################################################### > > use hdf5 > implicit none > > integer :: hdferror > integer(hid_t) :: file_id,attr_id,grp_id,atype_id > integer(hsize_t), dimension(1) :: adims > integer, dimension(1):: attr_data > character(len=*) :: h5filename > > c--- open hdf5 - file > call h5fopen_f(h5filename,H5F_ACC_RDWR_F,file_id, > & hdferror) > > call h5gopen_f(file_id,'/Mesh/Elements',grp_id,hdferror) > > call h5aopen_f(grp_id,'Num2DElems',attr_id,hdferror) > > adims(1) = 1 > call h5aread_f(attr_id,H5T_NATIVE_INTEGER,attr_data, > & adims,hdferror) > > write(*,*) 'Num2DElems: ', attr_data(1) > > call h5aclose_f(attr_id,hdferror) > > call h5gclose_f(grp_id,hdferror) > > call h5fclose_f(file_id,hdferror) > > > end subroutine read_hdf5 > > It seems to be an easy error, sorry. I hope anyone can help. I am stuck with > this problem ... > > Best regards, > Matthias > > -- > Dipl.-Ing. Matthias Springer > Fluid System Dynamics and Aeroacoustics > Institute of Process Machinery and Systems Engineering > University of Erlangen-Nuremberg > Cauerstrasse 4 > 91058 Erlangen, Germany > Tel.: +49 9131 85-29596 > Fax.: +49 9131 85-29449 > E-Mail: [email protected] > > > _______________________________________________ > Hdf-forum is for HDF software users discussion. > [email protected] > http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
