knee_singlecoil content was inconsistent with the manifest

[Liuzheng0808]

Hello, I've been trying to use knee_singlecoil recently,but when I downloaded it, I found that the content was inconsistent with the manifest.Do you know what the reason is?The downloaded file contains only one file ’knee_singlecoil_train‘ after extraction.

[mmuckley]

Okay, this seems to confirm an issue with the single coil test data. I'll track down where the issue is.

[mmuckley]

Hello @Liuzheng0808, I thought you were talking about the test set.

Based on what I can see with current download links, the validation set should be pretty big and should definitely have more than one file. Perhaps there was a bug in your curl command for downloading?

[Liuzheng0808]

Sorry, I'm sure I'm downloading the training and validation sets. In the manifest, they have more than one file, such as file10001.h5,file10002.h5.......However, in the files I downloaded, they only had one file. In the train set，it called ‘knee_singlecoil_train.h5'; In the val set, it called 'knee_singlecoil_val.h5'. Moreover, the space they occupy has not changed，about 80G and 14G. When I read them separately, they show the following：
{
val
ismrmrd_header <HDF5 dataset "ismrmrd_header": shape (), type "|O">
kspace <HDF5 dataset "kspace": shape (36, 640, 368), type "<c8">
reconstruction_esc <HDF5 dataset "reconstruction_esc": shape (36, 320, 320), type "<f4">
reconstruction_rss <HDF5 dataset "reconstruction_rss": shape (36, 320, 320), type "<f4">

train
ismrmrd_header <HDF5 dataset "ismrmrd_header": shape (), type "|O">
kspace <HDF5 dataset "kspace": shape (33, 640, 368), type "<c8">
reconstruction_esc <HDF5 dataset "reconstruction_esc": shape (33, 320, 320), type "<f4">
reconstruction_rss <HDF5 dataset "reconstruction_rss": shape (33, 320, 320), type "<f4">
}
They look like the contents of one file（for example file10001.h5).
I don't know why this is the case, do you have a way to solve it？
Or there was a bug in my curl command for downloading？

Thank you again for your patience and help.

[Liuzheng0808]

@mmuckley

[mmuckley]

@Liuzheng0808

I just downloaded it myself and extracted the files to verify that they match the manifest for knee_singlecoil_val_tar.xz, so I think you've made an error.

You need to do the following:

1. Run the full curl command from your email. The last two items in the command should be --output knee_singlecoil_val.tar.xz.
2. Run tar -xvf knee_singlecoil_val.tar.xz on the downloaded file, which should be named knee_singlecoil_val.tar.xz.

I'm not sure why your .h5 files are the correct sizes. My initial guess is that you renamed the knee_single_coil_val.tar.xz file to knee_singlecoil_val.h5 and your HDF5 script has somehow found the first volume in the file, but to be honest I can't be sure. If that were the case then you could be able to rename knee_singlecoil_val.h5 to knee_single_coil_val.tar.xz and run tar -xvf on that.

[Liuzheng0808]

@mmuckley Thank you so much! I successfully extracted the files！Like you said, I rename knee_singlecoil_val.h5 to knee_singlecoil_val.tar.xz.
It worked! Thank you again for your help！I hope you have a good life！