H5T: HDF5 Datatype Interface

In rhdf5: R Interface to HDF5

Description

These functions create and manipulate the datatype which describes elements of a dataset.

Usage

H5Tcopy      (dtype_id = h5default(type = "H5T"))
H5Tset_size  (dtype_id = h5default(type = "H5T"), size)
H5Tget_size  (dtype_id)
H5Tset_strpad(dtype_id, strpad = "NULLPAD")
H5Tget_strpad(dtype_id)

Arguments

dtype_id	A character name of a datatype. See h5const("H5T") for possible datatypes. Can also be an integer representing an HDF5 datatype.
size	The total size in bytes.
strpad	Character string repsenting the type of padding to be used. Valid options are 'NULLTERM', 'NULLPAD', 'SPACEPAD'

Details

Interface to the HDF5 C-library libhdf5. See https://portal.hdfgroup.org/display/HDF5/Datatypes for further details.

Value

The functions return the standard return value from their respective C-functions.

Author(s)

Bernd Fischer

References

https://portal.hdfgroup.org/display/HDF5

See Also

rhdf5

Examples

# create character datatype with string length 10
tid <- H5Tcopy("H5T_C_S1")
H5Tset_size(tid, 10L)

# List all predefined types implemented in the R-interface
h5const("H5T")

# List all available type classes (not all of them are implemented)
h5const("H5T_CLASS")

Example output

 [1] "H5T_IEEE_F32BE"          "H5T_IEEE_F32LE"         
 [3] "H5T_IEEE_F64BE"          "H5T_IEEE_F64LE"         
 [5] "H5T_STD_I8BE"            "H5T_STD_I8LE"           
 [7] "H5T_STD_I16BE"           "H5T_STD_I16LE"          
 [9] "H5T_STD_I32BE"           "H5T_STD_I32LE"          
[11] "H5T_STD_I64BE"           "H5T_STD_I64LE"          
[13] "H5T_STD_U8BE"            "H5T_STD_U8LE"           
[15] "H5T_STD_U16BE"           "H5T_STD_U16LE"          
[17] "H5T_STD_U32BE"           "H5T_STD_U32LE"          
[19] "H5T_STD_U64BE"           "H5T_STD_U64LE"          
[21] "H5T_STD_B8BE"            "H5T_STD_B8LE"           
[23] "H5T_STD_B16BE"           "H5T_STD_B16LE"          
[25] "H5T_STD_B32BE"           "H5T_STD_B32LE"          
[27] "H5T_STD_B64BE"           "H5T_STD_B64LE"          
[29] "H5T_NATIVE_CHAR"         "H5T_NATIVE_SCHAR"       
[31] "H5T_NATIVE_UCHAR"        "H5T_NATIVE_SHORT"       
[33] "H5T_NATIVE_USHORT"       "H5T_NATIVE_INT"         
[35] "H5T_NATIVE_UINT"         "H5T_NATIVE_LONG"        
[37] "H5T_NATIVE_ULONG"        "H5T_NATIVE_LLONG"       
[39] "H5T_NATIVE_ULLONG"       "H5T_NATIVE_FLOAT"       
[41] "H5T_NATIVE_DOUBLE"       "H5T_NATIVE_LDOUBLE"     
[43] "H5T_NATIVE_B8"           "H5T_NATIVE_B16"         
[45] "H5T_NATIVE_B32"          "H5T_NATIVE_B64"         
[47] "H5T_NATIVE_OPAQUE"       "H5T_NATIVE_HADDR"       
[49] "H5T_NATIVE_HSIZE"        "H5T_NATIVE_HSSIZE"      
[51] "H5T_NATIVE_HERR"         "H5T_NATIVE_HBOOL"       
[53] "H5T_NATIVE_INT8"         "H5T_NATIVE_UINT8"       
[55] "H5T_NATIVE_INT_LEAST8"   "H5T_NATIVE_UINT_LEAST8" 
[57] "H5T_NATIVE_INT_FAST8"    "H5T_NATIVE_UINT_FAST8"  
[59] "H5T_NATIVE_INT16"        "H5T_NATIVE_UINT16"      
[61] "H5T_NATIVE_INT_LEAST16"  "H5T_NATIVE_UINT_LEAST16"
[63] "H5T_NATIVE_INT_FAST16"   "H5T_NATIVE_UINT_FAST16" 
[65] "H5T_NATIVE_INT32"        "H5T_NATIVE_UINT32"      
[67] "H5T_NATIVE_INT_LEAST32"  "H5T_NATIVE_UINT_LEAST32"
[69] "H5T_NATIVE_INT_FAST32"   "H5T_NATIVE_UINT_FAST32" 
[71] "H5T_NATIVE_INT64"        "H5T_NATIVE_UINT64"      
[73] "H5T_NATIVE_INT_LEAST64"  "H5T_NATIVE_UINT_LEAST64"
[75] "H5T_NATIVE_INT_FAST64"   "H5T_NATIVE_UINT_FAST64" 
[77] "H5T_NATIVE_DOUBLE"       "H5T_C_S1"               
[79] "H5T_FORTRAN_S1"         
 [1] "H5T_INTEGER"   "H5T_FLOAT"     "H5T_TIME"      "H5T_STRING"   
 [5] "H5T_BITFIELD"  "H5T_OPAQUE"    "H5T_COMPOUND"  "H5T_REFERENCE"
 [9] "H5T_ENUM"      "H5T_VLEN"      "H5T_ARRAY"    

rhdf5 documentation built on Nov. 8, 2020, 6:56 p.m.