HESSI Data Object Parameters:  VIS_FWDFIT Algorithm Parameters

 

Links to other parameter tables:
     All      Spectrum (Standard, Info, All)      Lightcurve (Standard, Info, All)     
     Image:     General (Standard, Info, All),   Clean,   Pixon,   Forward Fit,   MEM_NJIT,   VIS_FWDFIT,   UV_SMOOTH  
Spectral Response Matrix          Observing Summary          Simulation

 

Name Main Object Control / Info* Description Default Units Range Type** User Level*** Class
vf_absolute Image Control If set, generate fit by minimizing the sum of ABS(input visibility - model visibility) 0 -- 0 - 1 byte Expert hsi_vis_fwdfit
vf_circle Image Control If set, forces sources to be circular 0 -- 0 - 1 byte Standard hsi_vis_fwdfit
vf_loop Image Control If set, fit to a loop 0 -- 0 - 1 int Standard hsi_vis_fwdfit
vf_maxiter Image Control Maximum number of iterations per stage 2000 -- -- long Standard hsi_vis_fwdfit
vf_multi Image Control If set, fit to a double source 0 -- 0 - 1 int Standard hsi_vis_fwdfit
vf_nfree Image Info Number of free parameters in fit -- -- -- int N/A hsi_vis_fwdfit
vf_niter Image Info Number of iterations done in fit -- -- -- int N/A hsi_vis_fwdfit
vf_noerr Image Control If set, forces fit to ignore input statistical errors 0 -- 0 - 1 byte Expert hsi_vis_fwdfit
vf_nophase Image Control If set, forces all input phases to zero 0 -- 0 - 1 byte Expert hsi_vis_fwdfit
vf_noplotfit Image Control If set, suppress plotfit display 0 -- 0 - 1 int Standard hsi_vis_fwdfit
vf_profile_coeff Image Info Consant, slope, correlation of fit of predicted to observed profile -- -- -- float(3,9) N/A hsi_image_alg
vf_profile_cstat Image Info Goodness of fit of image for each detector from comparison of predicted and observed profiles -- -- -- float(9) N/A hsi_image_alg
vf_profile_mc_cstat Image Info Monte Carlo C-statistic for each detector -- -- -- float(9) N/A hsi_image_alg
vf_profile_mc_fwhm Image Info Monte Carlo FWHM for each detector -- -- -- float(9) N/A hsi_image_alg
vf_profile_mc_tot_cstat Image Info Monte Carlo C-statistic for all detectors -- -- -- float N/A hsi_image_alg
vf_profile_mc_tot_fwhm Image Info Monte Carlo FWHM for all detectors -- -- -- float N/A hsi_image_alg
vf_profile_tot_cstat Image Info Overall goodness of fit of image from comparison of predicted and observed profiles' -- -- -- float N/A hsi_image_alg
vf_qflag Image Info Quality flag. Bits indicate the type of problem found. 0 means good fit -- -- -- int N/A hsi_vis_fwdfit
vf_redchi2 Image Info Reduced chi-square of fit -- -- -- float N/A hsi_vis_fwdfit
vf_sigma Image Info Structure(s) containing sigmas on fitted source parameters -- -- -- pointer N/A hsi_vis_fwdfit
vf_srcin Image Control Optional input source structure array to serve as a starting point -- -- -- pointer Standard hsi_vis_fwdfit
vf_srcout Image Info Structure(s) containing fitted source parameters -- -- -- pointer N/A hsi_vis_fwdfit
vf_vis_window Image Info Window ID for visibility fit plot -- -- -- int N/A hsi_vis_fwdfit

* Control Parameters are set by the user to control the software; Info parameters are informational output parameters.

** Note that for parameters whose type is 'pointer', you can set the parameter without making it a pointer first - the object will take care of that.  And when you retrieve a parameter that is a pointer, unless you use the /NO_DEREFERENCE keyword on the call to GET, the contents of the pointer will be returned, not the pointer.

*** User Levels are:
   Standard - parameters that most users will want to set
   Advanced - parameters that require a high level of familiarity with the software
   Expert - parameters that should never be set by users

Last updated 1-Nov-2010 by Kim Tolbert , 301-286-3965