Exponenta Banner

hasdata

Возвращает true если больше данных доступно в blockedImageDatastore

свернуть все на странице

    Синтаксис

    tf = hasdata(bimds)

    Описание

    пример

    tf = hasdata(bimds) возвращает логический скаляр, true или false, указание на доступность данных в blockedImageDatastore bimds. Используйте hasdata в сочетании с read функционируйте, чтобы считать все данные в datastore. Вызовите hasdata прежде, чем вызвать read.

    Примеры

    свернуть все

    Скрипт Open Live Script

    Создайте блокированное изображение из демонстрационного изображения.

    bim = blockedImage('tumor_091R.tif');

    Создайте blockedImageDatastore объект от блокированного изображения, bim. 

    bimds = blockedImageDatastore(bim);

    Считайте блоки из blockedImageDatastore до больше нет данных, чтобы читать, то есть, до hasdata возвращает false.

    while hasdata(bimds)
    [data, info] = read(bimds);
    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]

       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]

    Входные параметры

    свернуть все

    Блокированный datastore изображений в виде blockedImageDatastore объект.

    Выходные аргументы

    свернуть все

    Доступность данных, возвращенная как логический скаляр, true или false.

    Смотрите также

    Введенный в R2021a

    Документация Image Processing Toolbox

    Поддержка