MetaData["Number of Regions"] is inconsistent

[shnizzedy]

Contribution Criteria § File 2: Atlas Information says

Number of Regions: The number of regions defined by the atlas, not including empty space. Will be calculated if not provided

and that is accurate in the Atlas Info Summary table in all of the atlases I've inspected, but in the JSON files, many do include empty space in the count, so the number in the MetaData["Number of Regions"] field in the JSON is one more than the number in the # Regions column in the README.

Relatedly,

neuroparc/scripts/json_generation.py

Lines 165 to 175 in 5a5e746

	js_contents['rois'][str(0)] = {"label": "empty", "center":None}
	for (k, v) in csv_dict.items():
	k=int(k)
	try:
	js_contents['rois'][str(k)] = {"label": v, "center": parcel_centers[k], "size":int(size[k])}
	roi_sum=roi_sum+size[k]
	count=count+1
	except KeyError:
	js_contents['rois'][str(k)] = {"label": v, "center": None, "size": None}
	except TypeError:
	js_contents['rois'][str(k)] = {"label": v, "center": None, "size": None}

will include the region with index 0 in the count if that index is included in the label CSV.