HOW TO SEE IF I CAN GET TO THE FILE IN RESOURCES

[Albertina Ripanu]

Hi! I am trying my best to understand how to work with XNAT and resources .

So basically, I have a project and a subject, and when I enter on the manage files, I have resources>NIFTI(3files). 

I do not have any experiment, so no scans neither. 

How can I call the files from my resources on python in order to see if the files exists?

Down you will see what it gets returned if i run the commands but I do not know how to work it out with resources.

If you have any advice of how to correctly store the NIFTI files , please let me know as I am trying to integrate in a software in order to be able to download from the xnat server, the NIFTI files . 

de=interface.select.project('proj').subjects('11').get()

        print(de)

>>>[]

de=interface.select.project('proj').get()

>>>[11]

[Albertina Ripanu]

 # Select the project

        project = interface.select.project(project_id)

        # Check if the project exists

        if project.exists():

            # Select the subject

            subject = project.subject(subject_id)

            # Check if the subject exists

            if subject.exists():

                # Select the resource

                resource = subject.resource(resource_name)

                # Check if the resource exists

                if resource is not None:

                    # Get the specific file from the resource

                    file = resource.file(file_name)

                    # Check if the file exists

                    if file.exists():

                        # Download the file using the get() method

                        file_path = file.get()

I did this but it downloads automatically to the file downloads on my own PC. How do I tell it the path where to be downloaded?

[Jordi Huguet]

Hi/Buna Albertina, 

I did this but it downloads automatically to the file downloads on my own PC. How do I tell it the path where to be downloaded?

 

It is specified in the `get()` function docstring:

In [1]: f.get?
Signature: f.get(dest=None)
Docstring:
Downloads the file.
Parameters
----------
dest: string | None

    - If dest is None, then the user's Downloads directory is used
        as the default download location.
    - Else the file is downloaded at the requested location.
        Path should include the file name.
        eg: /path/to/file.txt

Returns
-------
string : the file location.
File:      ~/envs/pyxnat/lib/python3.10/site-packages/pyxnat/core/resources.py
Type:      method

See below an example that fetches a random file (through project > experiment > resource) and retrieves it,

```

import pyxnat

cfg = '.xnat.cfg'
intf = pyxnat.Interface(config=cfg)

random_expID = intf.select.project('sandbox').experiments().get()[0]

e = p.experiment(random_expID)

random_file  = e.resource('MY_RESOURCE').files()[0]

random_file.get(dest='/enter/here/your/local/file_path.nii.gz')

```

Finally, you can find inspirational code fragments/examples at the pyxnat project repo (https://github.com/pyxnat/pyxnat) as well as at the docs page (https://pyxnat.github.io/pyxnat/). 

Hope it helps. 

Jordi

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