Get details of HDF5 data types

Source: R/H5T.R

Get details of HDF5 data types

H5Tget_class(dtype_id)

H5Tget_nmembers(dtype_id)

Arguments

dtype_id

ID of HDF5 datatype to work with. Normally created with a function like H5Tcopy or H5Tenum_create.

Value

  • H5Tget_class() returns an character vector of length 1 giving the class of the data type.

  • H5Tget_nmembers() returns the number of members in the given datatype. Will fail with an error if the supplied datatype is not of type H5T_COMPUND or H5T_ENUM.

Examples

## create an enum datatype with two entries
tid <- H5Tenum_create(dtype_id = "H5T_NATIVE_UCHAR")
H5Tenum_insert(tid, name = "TRUE", value = 1L)
H5Tenum_insert(tid, name = "FALSE", value = 0L)

H5Tget_class(tid)
#> [1] "H5T_ENUM"
H5Tget_nmembers(tid)
#> [1] 2