Serving Local Nifti files Question

Hi - My goal is to view a local nifti file (.nii) on the neuroglancer demo appspot. So, I made a directory and placed the file in it, then ran cors_webserver.py to serve that directory. However, when I entered the corresponding url into neuroglancer: nifti://<my local hrtp url> I got a Failed to parse NIFTI header. error. I thought this might be the .nii file format so I tried again with separate hdr and img files but stll got an error.

My .nii file is from the nitrc website, so I don’t think it is a case of a corrupted file. I wanted to ask if there is something obvious that I am doing wrong? Do I need to change the name of the nifti file or something?

Thanks in advance.

[xgui3783]

I believe the nifti:// protocol expects a single nifti file, rather than the root directory (unlike precomputed:// for example)

[xgui3783]

I’m not the maintainer of neuroglancer, just passer by 😅

with the neuroglancer hosted on appspot, there is an additional obstacle: it is hosted on https, and by default, browser will restrict HTTP calls made from https origin to http origin (not the otherway around).

A less risky way, perhaps, is to leverage the drag and drop of nifti, and use URL.createObjectURL on the dropped file, and point to it with the nifti:// (shameless self plug, we do that with our fork of the neuroglancer)