HESSI Data Object Parameters:  MEM VIS Algorithm Parameters


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


Name Main Object Control / Info* Description Default Units Range Type** User Level*** Class
vis_btot Image Info Final value of btot, the total brightness -- N/A -- float N/A hsi_memvis
vis_chi2 Image Info Final value of chi^2 -- N/A -- float N/A hsi_memvis
vis_chi_limit Image Control Chi-squared value at which image reconstruction will stop 1.1 N/A -- float Advanced hsi_memvis
vis_delta Image Info Final value of delta -- N/A -- float N/A hsi_memvis
vis_delta_max Image Control Max value of delta for a switch to new lambda .001 N/A -- float Advanced hsi_memvis
vis_init_btot Image Control If set, initialize the value of btot 0 N/A 0 - 1 int Advanced hsi_memvis
vis_iter Image Info Final value of iterations at last lambda -- N/A -- int N/A hsi_memvis
vis_iter_max Image Control Max number of iterations for a given lambda 150 N/A -- int Advanced hsi_memvis
vis_itgain Image Control Initial value of the iteration gain .3 N/A -- float Advanced hsi_memvis
vis_lambda Image Info Final value of lambda -- N/A -- int N/A hsi_memvis
vis_lambda_max Image Control Max value of lambda allowed 20 N/A -- int Advanced hsi_memvis
vis_lnorm Image Control Initial strength of the entropy constraint 1.e-5 N/A -- float Advanced hsi_memvis
vis_no_chi2 Image Control If set, mem_vis iterates to vis_lambda_max, and ignores vis_chi_limit 0 N/A 0 - 1 byte Advanced hsi_memvis
vis_progress_bar Image Control If set, display progress bar with cancel option 1 N/A 0 - 1 int Standard hsi_memvis
vis_show_image Image Control If set, show intermediate images 1 N/A 0 - 1 byte Standard hsi_memvis
vis_sys_err Image Control Systematic error term .01 N/A -- float Advanced hsi_memvis

* 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 16-May-2005 by Kim Tolbert , 301-286-3965