fract_along_parent 

Connection location of this section's proximal point along the parent cable. 
    Normally this could be determined by the 3D points, but this option is needed as many reconstructed neurons have dendrites "floating in space", possibly due to drift
    of the slice. In this case the fract_along_parent determines electrical connectivity, and it is up to the loading application/its user to decide to ignore the discrepancy, 
    move the dendrite or fill in an extra section.
    NOTE: this attribute will be required in v2.0!! Don't use fractAlongParent anymore.
Changed for consistency with ChannelML and NetworkML naming conventions.

Attribute Information

Used By

Complex Type Cable

Source 

<xs:attribute name="fract_along_parent" type="meta:ZeroToOne" use="optional">
  <xs:annotation>
    <xs:documentation>Connection location of this section's proximal point along the parent cable. Normally this could be determined by the 3D points, but this option is needed as many reconstructed neurons have dendrites "floating in space", possibly due to drift of the slice. In this case the fract_along_parent determines electrical connectivity, and it is up to the loading application/its user to decide to ignore the discrepancy, move the dendrite or fill in an extra section. NOTE: this attribute will be required in v2.0!! Don't use fractAlongParent anymore. Changed for consistency with ChannelML and NetworkML naming conventions.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample