Documentation. (Unfinished)
Description:
Schrijver's R value quantifies the amount of unsigned magnetic flux around a strong magnetic polarity inversion line (MPILs) present in the photospheric normal-to-surface magnetic field of an active region. Original calculation of R was implemented for line-of-sight MDI magnetograms, therefore this implementation reduce the HMI magnetogram's resolution from 0.5'' to 2.0''. In this implementantion, R value can be calculated using the radial-component magnetogram provided by the CEA version of HMI data.
Input data:
HARP cutouts of CEA Blos and Br.
Parameters:
Value of magnetic flux threshold (th) in order to define the strong portion of MPILs. Different values of th are used for Blos or Br.
Output:
Log(R) value.
Property name in DB:
r_value_blos_logr, r_value_br_logr
Repository:
https://dev.flarecast.eu/stash/projects/FE/repos/rvalue-idl/browse