get_proj

get_proj();
get_proj_results();
get_proj_opt( [name] );

Description

get_proj

The get_proj command returns the current projection estimation method object.The function accepts no arguments. The returned information includes:

• sigma - to get 1, 2, or 3-sigma limits
• eps - precision of resulting limits
• maxiters- maximum number of tries to bracket desired limits, before returning
• remin - if during search, a new fit statistic is found that is smaller than original best fit, the difference between new and original statistics must be greater than this value

get_proj_results

The get_proj_results command accesses results from the last time projection was run. The function accepts no arguments. The results include the following attributes:

• datasets - Data sets in fit
• methodname - Estimation method name
• fitname - Fitting method name
• statname - Statistic name
• sigma - Change in statistic
• parnames - Model parameter names
• parvals - Model parameter fit values
• parmins - Model parameter minimum values
• parmaxes - Model parameter maximum values
• warnings - Warning messages

get_proj_opt

The get_proj_opt command returns a projection option by name. If the name isn't specified, it returns a dictionary of all options that govern how projection is run.

• eps - precision of resulting limits, default=0.01
• fast - the method is automatically switched to a faster option to reduce the time per fit, default=True
• max_rstat - maximum possible value of the reduced statistic, default=3
• maxfits - maximum number of tries to fit the parameter space, default=5
• maxiters- maximum number of tries to bracket desired limits, before returning, default=200
• remin - if during search, a new fit statistic is found that is smaller than original best fit, the difference between new and original statistics must be greater than this value, default=0.01
• sigma - to get 1, 2, or 3-sigma limits, default=0.01
• soft_limits - a switch which allows the search to go all the way out to the hard parameter limits; if switched on, the search will be restricted to occur within the soft limits, which can be changed by the user, default=False
• tol - tolerance for the fit, default=0.20000000000000001

sherpa> get_proj();

name        = projection
max_rstat   = 3
maxiters    = 200
soft_limits = False
eps         = 0.01
fast        = True
maxfits     = 5
remin       = 0.01
tol         = 0.2
sigma       = 1

sherpa> get_proj_results();

sherpa> get_proj_opt("sigma");
1