Array of zeros
Z = zeros(sz,arraytype)
Z = zeros(sz,datatype,arraytype)
Z = zeros(sz,'like',P)
Z = zeros(sz,datatype,'like',P)
C = zeros(sz,codist)
C
= zeros(sz,datatype,codist)
C = zeros(sz,___,codist,'noCommunication')
C = zeros(sz,___,codist,'like',P)
Z = zeros(sz, creates a
matrix with underlying class of double, with zeros in all elements.arraytype)
Z = zeros(sz,
creates a matrix with underlying class of datatype,arraytype)datatype, with
zeros in all elements.
The size and type of array are specified by the argument options according to the following table.
| Argument | Values | Descriptions |
|---|---|---|
sz | n | Specifies size as an n-by-n
matrix. |
m,n or [m n] | Specifies size as an m-by-n
matrix. | |
m,n,...,k or [m n ...
k] | Specifies size as an
m-by-n-by-...-by-k
array. | |
arraytype | 'distributed' | Specifies distributed array. |
'codistributed' | Specifies codistributed array, using the default distribution scheme. | |
'gpuArray' | Specifies gpuArray. | |
datatype | 'double' (default),
'single', 'int8',
'uint8', 'int16',
'uint16', 'int32',
'uint32', 'int64', or
'uint64' | Specifies underlying class of the array, i.e., the data type of its elements. |
Z = zeros(sz,'like',P) creates an array of zeros
with the same type and underlying class (data type) as array
P.
Z = zeros(sz,
creates an array of zeros with the specified underlying class
(datatype,'like',P)datatype), and the same type as array
P.
C = zeros(sz,codist) or
C
= zeros(sz,
creates a codistributed array of zeros with the specified size and underlying class
(the default datatype,codist)datatype is 'double').
The codistributor object codist specifies the distribution scheme
for creating the codistributed array. For information on constructing codistributor
objects, see the reference pages for codistributor1d and codistributor2dbc. To use the
default distribution scheme, you can specify a codistributor constructor without
arguments. For example:
spmd
C = zeros(8,codistributor1d());
endC = zeros(sz,___,codist,'noCommunication')
specifies that no interworker communication is to be performed when constructing a
codistributed array, skipping some error checking steps.
C = zeros(sz,___,codist,'like',P) creates a
codistributed array of zeros with the specified size, underlying class, and
distribution scheme. If either the class or codistributor argument is omitted, the
characteristic is acquired from the codistributed array P.
Create a 1000-by-1000 distributed array of zeros with underlying class double:
D = zeros(1000,'distributed');
Create a 1000-by-1000 codistributed double matrix of zeros, distributed by its second dimension (columns).
spmd(4) C = zeros(1000,'codistributed'); end
With four workers, each worker contains a 1000-by-250 local piece of
C.
Create a 1000-by-1000 codistributed uint16 matrix of zeros,
distributed by its columns.
spmd(4) codist = codistributor('1d',2,100*[1:numlabs]); C = zeros(1000,1000,'uint16',codist); end
Each worker contains a 100-by-labindex local piece of
C.
Create a 1000-by-1000 gpuArray of zeros with underlying class
uint32:
G = zeros(1000,'uint32','gpuArray');