SHOW Statement

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The NETFLOW Procedure

SHOW Statement

SHOW options / qualifiers ;

The options available with the SHOW statement of PROC NETFLOW are summarized by purpose in Table 4.22.

Table 4.22: Functional Summary, SHOW statement: PROC NETFLOW

Description	Statement	Option
SHOW statement options
show problem, optimization status	SHOW	STATUS
show network model parameters	SHOW	NETSTMT
show data sets that have, will be created	SHOW	DATA SETS
show options that pause optimization	SHOW	PAUSE
show Simplex algorithm options	SHOW	SIMPLEX
show pricing strategy options	SHOW	PRICING
show miscellaneous options	SHOW	MISC

SHOW statement qualifiers
only if relevant	SHOW	RELEVANT
only stage 1 options when doing stage 1. only stage 2 options when doing stage 2	SHOW	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.

The following options can appear in the SHOW statement.

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

DATA SETS

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 DATA SETS)
      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:

information on noncurrent data sets
the options that control the reasons why stage 1 optimization should be halted and the options that control the Simplex algorithm during stage 1 optimization, if the unconstrained optimum has been reached or constrained optimization has been performed
if P1SCAN=BEST or P1SCAN=FIRST, the P1NPARTIAL option is irrelevant
if PRICETYPE1=BLAND or PRICETYPE1=NOQ, the options QSIZE1=, Q1FILLSCAN=, REFRESHQ1=, and REDUCEQSIZE1= are irrelevant
if Q1FILLSCAN=BEST or Q1FILLSCAN=FIRST, the Q1FILLNPARTIAL= option is irrelevant
the options that control the reasons stage 2 optimization should be halted, the options that control the Simplex algorithm during stage 2 optimization, if the constrained optimum has been reached
If P2SCAN=BEST or P2SCAN=FIRST, the P2NPARTIAL= option is irrelevant
if PRICETYPE2=BLAND or PRICETYPE2=NOQ, the options QSIZE2=, Q2FILLSCAN=, REFRESHQ2=, and REDUCEQSIZE2= are irrelevant.
If Q2FILLSCAN=BEST or Q2FILLSCAN=FIRST, the Q2FILLNPARTIAL= option is irrelevant.

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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