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#!N
#!CSeaGreen #!N #!Rarrays Arrays #!N #!EC #!N #!N Array
Objects hold the actual data, positions, connections, and so on. An
Array consists of some number of #!F-adobe-times-medium-i-normal--18* items #!EF numbered consecutively
starting at 0. Each item has a #!F-adobe-times-medium-i-normal--18* type, category, rank
#!EF and #!F-adobe-times-medium-i-normal--18* shape, #!EF defined as follows: #!N #!I0 #!N
#!N #!I0 #!N #!F-adobe-times-bold-r-normal--18* Type #!EF #!I50 #!N Types include #!F-adobe-times-bold-r-normal--18*
double #!EF , #!F-adobe-times-bold-r-normal--18* float #!EF , #!F-adobe-times-bold-r-normal--18* int #!EF ,
#!F-adobe-times-bold-r-normal--18* uint #!EF , #!F-adobe-times-bold-r-normal--18* short #!EF , #!F-adobe-times-bold-r-normal--18* ushort #!EF
, #!F-adobe-times-bold-r-normal--18* byte #!EF , #!F-adobe-times-bold-r-normal--18* ubyte #!EF , and #!F-adobe-times-bold-r-normal--18*
string #!EF . (For example, #!F-adobe-times-bold-r-normal--18* byte #!EF is signed byte
and #!F-adobe-times-bold-r-normal--18* ubyte #!EF is unsigned byte.) #!N #!I0 #!N #!F-adobe-times-bold-r-normal--18*
Category #!EF #!I50 #!N A category can be #!F-adobe-times-bold-r-normal--18* real #!EF
or #!F-adobe-times-bold-r-normal--18* complex #!EF . #!N #!I0 #!N #!F-adobe-times-bold-r-normal--18* Rank #!EF
#!I50 #!N Rank 0 corresponds to scalars, rank 1 to vectors,
rank 2 to matrices or rank-2 tensors; higher ranks correspond to
higher-order tensors. #!N #!I0 #!N #!F-adobe-times-bold-r-normal--18* Shape #!EF #!I50 #!N The
shape is defined as the list of dimensions of the structure.
For rank-0 items (scalars), there is no shape. For rank-1 structures
(vectors), the shape is a single number corresponding to the number
of dimensions. For rank-2 structures, shape is two numbers, and so
on. #!I0 #!N #!N The following are examples of these classifications:
#!N #!I0 #!N #!F-adobe-times-medium-r-normal--18* #!N #!N #!I30 #!N o Three-dimensional points
have type #!F-adobe-times-bold-r-normal--18* float #!EF or #!F-adobe-times-bold-r-normal--18* double #!EF , category
#!F-adobe-times-bold-r-normal--18* real #!EF , rank 1, and shape 3. #!N #!I30
#!N o Two-vectors typically have type #!F-adobe-times-bold-r-normal--18* float #!EF . They
are category #!F-adobe-times-bold-r-normal--18* real #!EF , rank 1, and shape 2.
Three-vectors are shape 3. #!N #!I30 #!N o Tetrahedra have type
#!F-adobe-times-bold-r-normal--18* int #!EF , category #!F-adobe-times-bold-r-normal--18* real #!EF , rank 1,
and shape 4. #!N #!I30 #!N o Scalar values typically have
type #!F-adobe-times-bold-r-normal--18* int #!EF or #!F-adobe-times-bold-r-normal--18* float #!EF . They are
category #!F-adobe-times-bold-r-normal--18* real #!EF and rank 0, with no shape. #!N
#!I30 #!N o Strain tensors typically have type #!F-adobe-times-bold-r-normal--18* float #!EF
or #!F-adobe-times-bold-r-normal--18* double #!EF . They are category #!F-adobe-times-bold-r-normal--18* real #!EF
, rank 2, and shape #!F-adobe-times-medium-i-normal--18* 3*3 #!EF . #!N #!I0
#!N #!EF #!N Data Explorer uses six types of Array: #!F-adobe-times-medium-i-normal--18*
Irregular Arrays #!EF and five types of compact Array: #!F-adobe-times-medium-i-normal--18* Regular
#!EF , #!F-adobe-times-medium-i-normal--18* Product #!EF , #!F-adobe-times-medium-i-normal--18* Path #!EF , #!F-adobe-times-medium-i-normal--18*
Mesh #!EF , and #!F-adobe-times-medium-i-normal--18* Constant #!EF . #!N #!N The
Array types are discussed in the following sections. #!N #!N #!N
#!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Lall252,dxall253 h Irregular Arrays #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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