Inherits from class H5T.
Object of class H5T_COMPOUND.
new(labels, dtypes, size = NULL, offset = NULL, id = NULL)Create at compound type that is the HDF5 equivalent of a table
Parameters
The labels of the columns of the compound object
The datatypes of the columns of the object; this is usually a list of objects
of class H5T
The size of each datatype; if NULL, automatically inferred
The offset where each datatype starts; can be different from the sum of the individual sizes
so that datatypes are aligned with memory addresses. If NULL, inferred automatically
Internal use only
pack()This function implements the HDF5-API function H5Tpack. Please see the documentation at https://docs.hdfgroup.org/hdf5/v1_10/group___h5_t.html for details.
get_cpd_types()Return H5T objects that represent the datatypes of the columns of the
compound object. Returned as a list if more than 1
get_cpd_labels()Return the labels of the columns as a character vector
get_cpd_classes()Return the classes of the columns as an object of type factor_ext
get_cpd_offsets()Return the offsets of the datatypes
describe()Print a detailed description of the datatype; this is experimental
# create a H5T_COMPOUND corresponding to a data-frame
my_cpd <- H5T_COMPOUND$new(c("name", "age", "salary"),
dtypes=list(H5T_STRING$new(size=200), h5types$H5T_NATIVE_INT, h5types$H5T_NATIVE_DOUBLE))
my_cpd
#> Class: H5T_COMPOUND
#> Datatype: H5T_COMPOUND {
#> H5T_STRING {
#> STRSIZE 200;
#> STRPAD H5T_STR_NULLTERM;
#> CSET H5T_CSET_ASCII;
#> CTYPE H5T_C_S1;
#> } "name" : 0;
#> H5T_STD_I32LE "age" : 200;
#> H5T_IEEE_F64LE "salary" : 204;
#> }