Difficulties to using GrdiPatchDataset

[FerseinChris]

I have attached a picture showing my codes, I wish to create a gridpatchdataset. I've done it following the documentation here https://docs.monai.io/en/stable/data.html#gridpatchdataset , after creating the loader, I;m unable to even check the shape of the patches. Help check if the code is not correct and propose a solution to correctly building a gridpatchdataset for custom dataset and how to access data in the loader for further use.

[KumoLiu]

Hi @FerseinChris, here are some examples which include the usage of GridPatchDataset also include how to check the data shape after dataloader.
https://github.com/Project-MONAI/tutorials/blob/93c470587d98a6a10843824c23f9edb5658d15c6/modules/nifti_read_example.ipynb#L107
https://github.com/Project-MONAI/tutorials/blob/93c470587d98a6a10843824c23f9edb5658d15c6/modules/2d_slices_from_3d_training.ipynb#L22

Hope it helps, thanks!