Latest revision as of 04:44, 30 November 2011

Summary

NDARRAY is a data type, which is designed to transfer N-dimensional numerical array.

Data	Type	Description
TYPE	UINT8	Scalar type (2:int8 3:uint8 4:int16 5:uint16 6:int32 7:uint32 10:float32 11:float64 13:complex float 64*)
DIM	UINT8	Dimension of array
SIZE	UINT16[DIM]	Size of array
DATA	TYPE[SIZE[0]][SIZE[1]]....[[SIZE[DIM-1]]]	Array data. (Must be in network byte order.)

2/16/2011: Complex number support is added.

Complex is a 128-bit variable consisting of a real part in the first 64-bit and an imaginal part in the last 64-bit.

Like multi-dimensional array in C/C++, DATA field is laid out in sequentially in a byte stream. For example, if the value of DATA is defined by:

char data[3][3] = {{1, 2, 3},
                 {4, 5, 6},
                 {7, 8, 9}
                };

the layout in the byte stream can be visualized as follows:

  +-+-+-+-+-+-+-+-+-+
  |1|2|3|4|5|6|7|8|9|
  +-+-+-+-+-+-+-+-+-+

Data

Type

Description

N/A

N/A

N / A

The NDARRAY message type is implemented in the following source code.

Junichi Tokuda, Yuichiro Hayashi

@@ Line 1: / Line 1: @@
-[[OpenIGTLink/ProtocolV2/Draft | &lt;&lt; Version 2 Draft Page]]
+[[OpenIGTLink/ProtocolV2/Index | &lt;&lt; Version 2 Index Page]]
 =Summary=
@@ Line 16: / Line 16: @@
 | align="left" | TYPE
 | align="left" | UINT8
-| align="left" | Scalar type (2:int8 3:uint8 4:int16 5:uint16 6:int32 7:uint32 10:float32 11:float64 13:complex float 64)
+| align="left" | Scalar type (2:int8 3:uint8 4:int16 5:uint16 6:int32 7:uint32 10:float32 11:float64 13:complex float 64*)
 |-
 | align="left" | DIM
@@ Line 31: / Line 31: @@
 |-
 |}
+<font color=red>2/16/2011: Complex number support is added.</font>
+*Complex is a 128-bit variable consisting of a real part in the first 64-bit and an imaginal part in the last 64-bit.
 ===Memory layout of DATA field===