partition

The bigimageDatastore object and this function will be removed in a future release. Use the partition function of the blockedImageDatastore object instead.

To update your code, first create a blockedImage object to read your image data, then create a blockedImageDatastore to manage blocks of the data. In the call to the partition function, replace the first input argument with the blockedImage object. You do not need to change the other arguments.

bigIm = bigimage("tumor_091R.tif");
bigDS = bigimageDatastore(bigIm);
outds = partition(bigDS,3,1);

blockedIm = blockedImage("tumor_091R.tif");
blockedDS = blockedImageDatastore(blockedIm);
outds = partition(blockedDS,3,1);

Starting in R2021a, the bigimageDatastore object and its object functions, which operate on data from bigimage objects, are no longer recommended. Instead, use the blockedImageDatastore object and its object functions, which operate on data from blockedImage objects. The blockedImage object offers several advantages including extension to N-D processing, a simpler interface, and custom support for reading and writing nonstandard image formats.