show_all

Context: info

Synopsis

Reports the current state of the Sherpa session

Syntax

show_all([id, outfile=None, clobber=False])

Description

The show_all() command returns information about the current Sherpa session. This includes source and background data and response files that have been loaded, the current statistic and optimization method, and models that have been defined. The current parameter values for the models are included, as well as information on the most recent fit. Model values and fit statistics are updated each time a new fit is run.

id - the id of the dataset to use; default is to show information for all available datasets.
outfile - name of the file in which to store the information
clobber - a Boolean switch which indicates whether or not the 'outfile' should be overwritten, if the file already exists; default=False

The behavior of the screen output is determined by the user's $PAGER environment variable setting, which is usually a variant of "more." To disable paging within show_all() - i.e. print the entire contents, even if it scrolls offscreen - change this setting to "cat" before starting Sherpa:

unix% setenv PAGER cat

unix% sherpa

Examples

Example 1

sherpa> show_all()

Print the current state of the Sherpa session. This session has spectral data with ARF and RMF loaded. The model parameter values reflect the most recent fit.

Data Set: 1
Filter: 0.0080-14.9431 Energy (keV)
Noticed Channels: 1-1024
name           = source.pi
channel        = Float64[1024]
counts         = Float64[1024]
staterror      = None
syserror       = None
bin_lo         = None
bin_hi         = None
grouping       = None
quality        = None
exposure       = 49429.2334679
backscal       = 1.87253514146e-05
areascal       = 1.0
grouped        = False
subtracted     = False
units          = energy
rate           = True
plot_fac       = 0
response_ids   = [1]
background_ids = [1]

RMF Data Set: 1:1
name     = source.rmf
detchans = 1024
energ_lo = Float64[1090]
energ_hi = Float64[1090]
n_grp    = UInt64[1090]
f_chan   = UInt32[1090]
n_chan   = UInt32[1090]
matrix   = Float64[572598]
offset   = 1
e_min    = Float64[1024]
e_max    = Float64[1024]

ARF Data Set: 1:1
name     = source.arf
energ_lo = Float64[1090]
energ_hi = Float64[1090]
specresp = Float64[1090]
bin_lo   = None
bin_hi   = None
exposure = 49470.9477594

Background Data Set: 1:1
Filter: 1-1024 Channel
Noticed Channels: 1-1024
name           = back.pi
channel        = Float64[1024]
counts         = Float64[1024]
staterror      = None
syserror       = None
bin_lo         = None
bin_hi         = None
grouping       = None
quality        = None
exposure       = 49429.2334679
backscal       = 2.69645060371e-05
areascal       = 1.0
grouped        = False
subtracted     = False
units          = channel
rate           = True
plot_fac       = 0
response_ids   = []
background_ids = []

Model: 1
apply_rmf(apply_arf((49429.2334679 * (powlaw1d.p1 * xswabs.abs1))))
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   p1.gamma     thawed      1.12513          -10           10           
   p1.ref       frozen            1 -3.40282e+38  3.40282e+38           
   p1.ampl      thawed  0.000237949            0  3.40282e+38           
   abs1.nH      thawed     0.215526            0       100000 10^22 atoms / cm^2

Optimization Method: LevMar
name    = levmar
ftol    = 1.19209289551e-07
xtol    = 1.19209289551e-07
gtol    = 1.19209289551e-07
maxfev  = None
epsfcn  = 1.19209289551e-07
factor  = 100.0
verbose = 0

Statistic: Chi2Gehrels
Chi Squared with Gehrels variance

Fit:Dataset               = 1
Method                = levmar
Statistic             = chi2gehrels
Initial fit statistic = 5.63992e+10
Final fit statistic   = 1327.28 at function evaluation 66
Data points           = 1024
Degrees of freedom    = 1021
Probability [Q-value] = 2.60145e-10
Reduced statistic     = 1.29998
Change in statistic   = 5.63992e+10
   p1.gamma       1.12513     
   p1.ampl        0.000237949 
   abs1.nH        0.215526

Example 2

sherpa> show_all(2, "sherpa.all", True)

Write the information for dataset id=2 to the file "sherpa.all", clobbering any existing file with the same name.

Bugs

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.