Added optionality for x,y,z, filtering and impedance (#506)

Co-authored-by: Ryan Ly <[email protected]>

Author: h-mayorquin

core/nwb.file.yaml

@@ -278,18 +278,22 @@ groups:
           neurodata_type_inc: VectorData
           dtype: float32
           doc: x coordinate of the channel location in the brain (+x is posterior).
+          quantity: '?'
         - name: y
           neurodata_type_inc: VectorData
           dtype: float32
           doc: y coordinate of the channel location in the brain (+y is inferior).
+          quantity: '?'
         - name: z
           neurodata_type_inc: VectorData
           dtype: float32
           doc: z coordinate of the channel location in the brain (+z is right).
+          quantity: '?'
         - name: imp
           neurodata_type_inc: VectorData
           dtype: float32
           doc: Impedance of the channel, in ohms.
+          quantity: '?'
         - name: location
           neurodata_type_inc: VectorData
           dtype: text
@@ -300,6 +304,7 @@ groups:
           neurodata_type_inc: VectorData
           dtype: text
           doc: Description of hardware filtering, including the filter name and frequency cutoffs.
+          quantity: '?'
         - name: group
           neurodata_type_inc: VectorData
           dtype:

docs/format/source/format_release_notes.rst

@@ -12,6 +12,7 @@ Major changes
 
 Minor changes
 ^^^^^^^^^^^^^
+- The elements `x`, `y`, `z`, `imp` and `filtering` are now optional instead of required.
 - Added an ``offset`` attribute to all ``TimeSeries`` objects to allow enhanced translation to scientific units.
 - Allowed ``NWBFile/stimulus/templates`` to contain ``Images`` objects. (#459)
 - Added new optional "order_of_images" dataset to ``Images`` that contains an ordered list of object references to