Contents:
- Creating Datasets in Groups
- Programming Example
Creating Datasets in Groups
We have shown how to create groups, datasets, and attributes.
In this section, we show how to create datasets in groups.
Recall that H5Dcreate/h5dcreate_f
creates a dataset at the location specified by a location identifier and
a name. Similar to H5Gcreate/h5gcreate_f,
the location identifier can be a
file identifier or a group identifier and the name can be
relative or absolute. The location identifier and the name together determine
the location where the dataset is to be created. If the location identifier
and name refer to a group, then the dataset is created in that group.
Programming Example
Description
This example shows how to create a dataset in a particular group. It opens the file created in the previous example and creates two datasets.
-
[ C Example using HDF5 1.8 ] -
h5_crtgrpd18.c[ C Example using HDF5 1.6 ] -
h5_crtgrpd.c
[ FORTRAN Example ] -
grpdsetexample.f90For details on compiling an HDF5 application: [ Compile Information ]
File Contents
Fig. 10.1 The Contents of groups.h5
(groupsf.h5 for FORTRAN)
Fig. 10.2a
groups.h5 in DDL
HDF5 "groups.h5" {
GROUP "/" {
GROUP "MyGroup" {
GROUP "Group_A" {
DATASET "dset2" {
DATATYPE { H5T_STD_I32BE }
DATASPACE { SIMPLE ( 2, 10 ) / ( 2, 10 ) }
DATA {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
}
}
}
GROUP "Group_B" {
}
DATASET "dset1" {
DATATYPE { H5T_STD_I32BE }
DATASPACE { SIMPLE ( 3, 3 ) / ( 3, 3 ) }
DATA {
1, 2, 3,
1, 2, 3,
1, 2, 3
}
}
}
}
}
Fig. 10.2b groupsf.h5 in DDL
HDF5 "groupsf.h5" {
GROUP "/" {
GROUP "MyGroup" {
GROUP "Group_A" {
DATASET "dset2" {
DATATYPE { H5T_STD_I32BE }
DATASPACE { SIMPLE ( 10, 2 ) / ( 10, 2 ) }
DATA {
1, 1,
2, 2,
3, 3,
4, 4,
5, 5,
6, 6,
7, 7,
8, 8,
9, 9,
10, 10
}
}
}
GROUP "Group_B" {
}
DATASET "dset1" {
DATATYPE { H5T_STD_I32BE }
DATASPACE { SIMPLE ( 3, 3 ) / ( 3, 3 ) }
DATA {
1, 1, 1,
2, 2, 2,
3, 3, 3
}
}
}
}
}
- - Last modified:August 26th 2008