.. index:: 
   single: Parameters; 1D Right Diff

1D Right Diff
=====================

Linear distance from the central axis as defined by the array or imaging modality to the point on the right side of the displayed profile where the profile slope is minimum. Also known as the point of maximum gradient. The minimum slope is found by calculating the first derivative and finding the minimum value. No interpolation is performed so this method is inaccurate for low resolution detectors such as 2D arrays.

**Protocol invocation name**: 1D Right Diff

|Note| Noisy data can lead to a reduced field edge value being reported.

.. |Note| image:: _static/Note.png