The NETFLOW Procedure

SHOW Statement

SHOW options / qualifiers ;

The options available with the SHOW statement of PROC NETFLOW are summarized by purpose in the following table.

Table 5.5: Functional Summary, SHOW Statement

Description Statement Option
SHOW Statement Options: 
show problem, optimization statusSHOWSTATUS
show network model parametersSHOWNETSTMT
show data sets that have been or will be createdSHOWDATASETS
show options that pause optimizationSHOWPAUSE
show simplex algorithm optionsSHOWSIMPLEX
show pricing strategy optionsSHOWPRICING
show miscellaneous optionsSHOWMISC
   
SHOW Statement Qualifiers: 
display information only on relevant optionsSHOW/ RELEVANT
display options for current stage onlySHOW/ STAGE
   


The SHOW statement enables you to examine the status of the problem and values of the RESET statement options. All output of the SHOW statement appears on the SAS log. The amount of information displayed when a SHOW statement is processed can be limited if some of the options of the SHOW statement are specified. These options indicate whether the problem status or a specific category of the RESET options is of interest. If no options are specified, the problem status and information on all RESET statement options in every category is displayed. The amount of displayed information can be limited further by following any SHOW statement options with a slash (/) and one or both qualifiers, RELEVANT and STAGE.

STATUS
produces one of the following optimization status reports, whichever is applicable. The warning messages are issued only if the network or entire problem is infeasible.
  
   NOTE: Optimization Status. 
         Optimization has not started yet. 
  
   NOTE: Optimization Status. 
         Optimizing network (ignoring any side constraints). 
         Number of iterations=17 
         Of these, 3 were degenerate 
   WARNING: This optimization has detected that the network is 
            infeasible. 
  
   NOTE: Optimization Status. 
         Found network optimum (ignoring side constraints) 
         Number of iterations=23 
         Of these, 8 were degenerate 
  
   NOTE: Optimization Status. 
         Optimizing side constrained network. 
         Number of iterations=27 
         Of these, 9 were degenerate 
   WARNING: This optimization has detected that the problem is 
            infeasible. 
  
   NOTE: Optimization Status. 
         Found side constrained network optimum 
         Number of iterations=6 
         Of these, 0 were degenerate
 


DATASETS
produces a report on output data sets.
  
   NOTE: Current output SAS data sets 
         No output data sets have been specified 
  
   NOTE: Current output SAS data sets 
         ARCOUT=libname.memname 
         NODEOUT=libname.memname 
         CONOUT=libname.memname 
         DUALOUT=libname.memname
 


  
   NOTE: Other SAS data sets specified in previous ARCOUT=, NODEOUT=, 
         CONOUT=, or DUALOUT=. 
         libname.memname 
                 . 
                 . 
                 . 
  
   NOTE: Current output SAS data sets (SHOW DATASETS) 
         libname.memname 
                 . 
                 . 
                 . 
   NOTE: SAS data sets specified as ARCOUT= NODEOUT= CONOUT= or 
         DUALOUT= data sets in previous PROC NETFLOW, SET, RESET 
         and SAVE statements. 
         The number following the data set specification was the 
         iteration number when observations were placed into the 
         data set. 
         libname.memname      iteration_number 
                 .                   . 
                 .                   . 
                 .                   .
 


PAUSE
produces a report on the current settings of options used to make optimization pause.
  
   NOTE: Options and parameters that stop optimization for reasons 
         other than infeasibility or optimality (SHOW PAUSE) 
         FEASIBLEPAUSE1=FALSE 
         ENDPAUSE1=FALSE 
         PAUSE1=999999 
         MAXIT1=1000 
         FEASIBLEPAUSE2=FALSE 
         PAUSE2=999999 
         MAXIT2=999999
 


SIMPLEX
produces the following:
  
   NOTE: Options and parameters that control the primal simplex 
         network algorithm (excluding those that affect the 
         pricing strategies) (SHOW SIMPLEX) 
         LRATIO1=FALSE 
         BIGM1=NOTWOPHASE1=TRUE, TWOPHASE1=NOBIGM1=FALSE 
         CYCLEMULT1=0.15 
         PERTURB1=FALSE 
         MINBLOCK1=2 
         INTFIRST=TRUE 
         LRATIO2=FALSE 
         BIGM2=NOTWOPHASE2=TRUE, TWOPHASE2=NOBIGM2=FALSE 
         REFACTFREQ=50 
         U=0.1 
         MAXLUUPDATES=6 
         MAXL=40
 


PRICING
produces the following:
  
   NOTE: Options and parameters that control the primal simplex 
         network algorithm pricing strategies (SHOW PRICING) 
         PRICETYPE1=Q 
         P1SCAN=FIRST 
         P1NPARTIAL=10 
         Q1FILLSCAN=FIRST 
         QSIZE1=24 
         REFRESHQ1=0.75 
         REDUCEQSIZE1=1 
         Q1FILLNPARTIAL=10 
         PRICETYPE2=Q 
         P2SCAN=FIRST 
         P2NPARTIAL=10 
         DUALFREQ=4 
         Q2FILLSCAN=FIRST 
         QSIZE2=24 
         REFRESHQ2=0.75 
         REDUCEQSIZE2=1 
         Q2FILLNPARTIAL=10
 


MISC
produces the following:
  
   NOTE: Miscellaneous options and parameters (SHOW MISC) 
         VERBOSE=12 
         ZTOL1=TRUE 
         ZERO1=1E-6 
         FUTURE1=FALSE 
         ZTOL2=TRUE 
         ZERO2=1E-6 
         FUTURE2=FALSE
 


Following a slash (/), the qualifiers below can appear in any SHOW statement.

RELEVANT
indicates that you want information only on relevant options of the RESET statement. The following will not be displayed if / RELEVANT is specified:

STAGE
indicates that you want to examine only the options that affect the optimization that is performed if a RUN statement is executed next. Before any optimization has been done, only stage 2 options are displayed if the problem has side constraints and the SCRATCH option is used, or if the CONOPT statement is specified. Otherwise, stage 1 options are displayed. If still optimizing neglecting constraints, only stage 1 options will be displayed. If the unconstrained optimum has been reached and optimization that considers constraints has not been performed, stage 1 options are displayed. If the problem has constraints, stage 2 options are displayed. If any optimization that considers constraints has been performed, only stage 2 options are displayed.

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