partition
Description
Examples
Partition blockedImageDatastore and Read Each Partition
Create a blocked image.
bim = blockedImage('tumor_091R.tif');
Create a blocked image datastore from the blocked image.
bimds = blockedImageDatastore(bim);
Partition the blocked image datastore into two partitions and create a new blockedImageDatastore
object of the data in the first partition.
bimdsp1 = partition(bimds, 2, 1);
Read data from the first partition.
disp('Partition 1');
Partition 1
while hasdata(bimdsp1) [data, info] = read(bimdsp1); disp(info); end
BlockSub: [1 1 1] Start: [1 1 1] End: [1024 1024 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [1 2 1] Start: [1 1025 1] End: [1024 2048 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [1 3 1] Start: [1 2049 1] End: [1024 3072 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [1 4 1] Start: [1 3073 1] End: [1024 4096 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [1 5 1] Start: [1 4097 1] End: [1024 5120 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [1 6 1] Start: [1 5121 1] End: [1024 6144 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [2 1 1] Start: [1025 1 1] End: [2048 1024 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [2 2 1] Start: [1025 1025 1] End: [2048 2048 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [2 3 1] Start: [1025 2049 1] End: [2048 3072 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [2 4 1] Start: [1025 3073 1] End: [2048 4096 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [2 5 1] Start: [1025 4097 1] End: [2048 5120 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [2 6 1] Start: [1025 5121 1] End: [2048 6144 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [3 1 1] Start: [2049 1 1] End: [3072 1024 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [3 2 1] Start: [2049 1025 1] End: [3072 2048 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [3 3 1] Start: [2049 2049 1] End: [3072 3072 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3]
Partition the blocked image datastore and create a new blockedImageDatastore
object of the data in the second partition.
bimdsp2 = partition(bimds, 2, 2);
Read data from the second partition.
disp('Partition 2');
Partition 2
while hasdata(bimdsp2) [data, info] = read(bimdsp2); disp(info); end
BlockSub: [3 4 1] Start: [2049 3073 1] End: [3072 4096 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [3 5 1] Start: [2049 4097 1] End: [3072 5120 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [3 6 1] Start: [2049 5121 1] End: [3072 6144 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [4 1 1] Start: [3073 1 1] End: [4096 1024 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [4 2 1] Start: [3073 1025 1] End: [4096 2048 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [4 3 1] Start: [3073 2049 1] End: [4096 3072 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [4 4 1] Start: [3073 3073 1] End: [4096 4096 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [4 5 1] Start: [3073 4097 1] End: [4096 5120 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [4 6 1] Start: [3073 5121 1] End: [4096 6144 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [5 1 1] Start: [4097 1 1] End: [5120 1024 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [5 2 1] Start: [4097 1025 1] End: [5120 2048 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [5 3 1] Start: [4097 2049 1] End: [5120 3072 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [5 4 1] Start: [4097 3073 1] End: [5120 4096 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [5 5 1] Start: [4097 4097 1] End: [5120 5120 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3] BlockSub: [5 6 1] Start: [4097 5121 1] End: [5120 6144 3] Level: 1 ImageNumber: 1 BorderSize: [0 0 0] BlockSize: [1024 1024 3]
Input Arguments
bimds
— Blocked image datastore
blockedImageDatastore
object
Blocked image datastore, specified as a blockedImageDatastore
object.
n
— Number of partitions
numeric scalar
Number of partitions, specified as a numeric scalar. To get an estimate for a
reasonable value for N
, use the numpartitions
function.
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
index
— Partition to read
numeric scalar
Partition to read, specified as a numeric scalar.
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
| logical
Output Arguments
subbimds
— Subset of datastore
blockedImageDatastore
object
Subset of datastore, returned as a blockedImageDatastore
object.
Version History
Introduced in R2021a
See Also
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