filename: Readme.txt

A software package for the computation of magnetic fields in the corona and
heliosphere on the basis of observed photospheric magnetic fields


Xuepu Zhao
Solar Observatories Group
Stanford University
W. W. Hansen Experimental Physics Laboratory
455 Via Palou, Stanford, CA 94305-4085

phone:  1-650-725-0474
fax  :  1-650-725-2333
email:  xpzhao@solar.stanford.edu

Readme.txt		this file
credit.txt		credit to be given to the routines
pzgrid.pro		grid spacing
pdpi.pro                the Legendre function for a specified \theta and N
pdp.pro                 the Legendre function for all \theta
csmphj                  Calculate Cos(MPHiJ) & Sin(MPHiJ)
csmph.pro               Calculate Cos(MPHiJ) & Sin(MPHiJ) for ALL Phis
gfnj.pro                Calculate Cos(GMPHiJ) & Sin(HMPHiJ)
gfn.pro                 run gfnj.pro for j=0,J-1
brtp.pro                the model-independent formula for calculating three
                        components of the magnetic field
pgh_wbrsc.pro           calculate spherical harmonic coefficients using 
                        the global distribution of the photospheric field
                        observed by WSO 
preadwsosc.pro          read WSO file for synoptic magnetogram maps
pgh_mbrsc.pro           calculate spherical harmonic coefficients using 
                        the global distribution of the photospheric field
                        observed by MDI or KPNO
hchf.pro                the r-dependent function valid below Rcp
psb_hc.pro              calculate the three components of magnetic field 
                        over the spheric surface of r < Rcp using the 
                        horizontal current field model
ghv_csss.pro            calculate spherical coefficients on the basis of 
                        the global distribution of coronal field calculated
                        at the cusp surface
cssshf.pro              the r-dependent function valid beyond Rcp
pb0_csss.pro            calculate the no-sign vector field at a point 
                        between Rcp and Rss
ppb_csss.pro            calculate the sign of the vector field at a point 
                        between Rcp and Rss 
psb_csss.pro            calculate Br,Bt,Bp at a spherical surface of r
                        between Rcp and Rss

runsample.pro           test above routines using one of the following
                        data files
WSO.1968.asci           data file for testing above routines
KPK.1968.fits
MDI.1968.fits