Initializing help system before first use

# GetMIPEntities(Int32, Int32, Char[], Int32[], Double[], Char[], Int32[], Int32[], Double[]) Method

Retrieves integr and entity information about a problem. It must be called before mipOptimize if the presolve option is used.
Namespace: Optimizer
Assembly: xprsdn (in xprsdn.dll) Version: 46.01.02+e8d9493ad804415424ae931ce2abaeb6c55a6d5a
Syntax
C#

    public void GetMIPEntities(
    	out int p_nentities,
    	out int p_nsets,
    	char[] coltype,
    	int[] colind,
    	double[] limit,
    	char[] settype,
    	int[] start,
    	int[] setcols,
    	double[] refval
    )

#### Parameters

p_nentities Int32
  Pointer to the integer where the number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities will be returned. This is equal to the problem attribute MIPENTS. May be null.
p_nsets Int32
  Pointer to the integer where the number of SOS1 and SOS2 sets will be returned. It can be retrieved from the problem attribute SETS. May be null.
coltype Char
  Character array of length MIPENTS where the entity types will be returned. The types will be one of:
  - B: binary variables;
  - I: integer variables;
  - P: partial integer variables;
  - S: semi-continuous variables;
  - R: semi-continuous integer variables.
  May be null if not required.
colind Int32
  Integer array of length MIPENTS where the column indices of the MIP entities will be returned. May be null if not required.
limit Double
  Double array of length MIPENTS where the limits for the partial integer variables and lower bounds for the semi-continuous and semi-continuous integer variables will be returned (any entries in the positions corresponding to binary and integer variables will be meaningless). May be null if not required.
settype Char
  Character array of length SETS where the set types will be returned. The set types will be one of:
  - 1: SOS1 type sets;
  - 2: SOS2 type sets.
  May be null if not required.
start Int32
  Integer array where the offsets into the setcols and refval arrays indicating the start of each set will be returned. This array must be of length SETS+1, the last element will contain the offset where set SETS+1 would start, and equals the length of the setcols and refval arrays, SETMEMBERS.
setcols Int32
  Integer array of length SETMEMBERS where the columns in each set will be returned.
refval Double
  Double array of length SETMEMBERS where the reference row entries for each member of the sets will be returned. These define the order for SOS2 constraints and may be used in branching for both types.

Remarks
Examples using GetMIPEntities:

- FixBV.cs

See Also

#### Reference

XPRSprob Class
GetMIPEntities Overload
Optimizer Namespace
Parent Topic GetMIPEntities Method

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