LoadMIP(String, Int32, Int32, Char[], Double[], Double[], Double[], Int64[], Int32[], Int32[], Double[], Double[], Double[], Int32, Int32, Char[], Int32[], Double[], Char[], Int64[], Int32[], Double[]) Method

public void LoadMIP(
	string probname,
	int ncols,
	int nrows,
	char[] rowtype,
	double[] rhs,
	double[] rng,
	double[] objcoef,
	long[] start,
	int[] collen,
	int[] rowind,
	double[] rowcoef,
	double[] lb,
	double[] ub,
	int nentities,
	int nsets,
	char[] coltype,
	int[] entind,
	double[] limit,
	char[] settype,
	long[] setstart,
	int[] setind,
	double[] refval
)

Parameters

probname   String

A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.

ncols   Int32

Number of structural columns in the matrix.

nrows   Int32

Number of rows in the matrix not (including the objective row). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.

rowtype   Char

Character array of length nrows containing the row types:

• L: indicates a <= constraint;
• E: indicates an = constraint;
• G: indicates a >= constraint;
• R: indicates a range constraint;
• N: indicates a nonbinding constraint.

rhs   Double

Double array of length nrows containing the right hand side coefficients. The right hand side value for a range row gives the upper bound on the row.

rng   Double

Double array of length nrows containing the range values for range rows. Values for all other rows will be ignored. May be null if not required. The lower bound on a range row is the right hand side value minus the range value. The sign of the range value is ignored - the absolute value is used in all cases.

objcoef   Double

Double array of length ncols containing the objective function coefficients. This can be null to set all objective coefficients to 0 (zero).

start   Int64

Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column. This array is of length ncols or, if collen is null, length ncols+1. If collen is null, the extra entry of start, start[ncols], contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. In C, this value is also the length of the rowind and rowcoef arrays.

collen   Int32

Integer array of length ncols containing the number of nonzero elements in each column. May be null if not required. This array is not required if the non-zero coefficients in the rowind and rowcoef arrays are continuous, and the start array has ncols+1 entries as described above. It may be null if not required.

rowind   Int32

Integer arrays containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, then the length of rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef   Double

Double array containing the nonzero element values length as for rowind.

lb   Double

Double array of length ncols containing the lower bounds on the columns. Use XPRS_MINUSINFINITY to represent a lower bound of minus infinity. If this is null then all lower bounds are 0 (zero).

ub   Double

Double array of length ncols containing the upper bounds on the columns. Use XPRS_PLUSINFINITY to represent an upper bound of plus infinity. It this is null then all upper bounds are infinite.

nentities   Int32

Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.

nsets   Int32

Number of SOS1 and SOS2 sets.

coltype   Char

Character array of length nentities containing the entity types:

• B: binary variables;
• I: integer variables;
• P: partial integer variables;
• S: semi-continuous variables;
• R: semi-continuous integer variables.

entind   Int32

Integer array of length nentities containing the column indices of the MIP entities.

limit   Double

Double array of length nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored). May be null if not required.

settype   Char

Character array of length nsets containing the set types:

• 1: SOS1 type sets;
• 2: SOS2 type sets.

May be null if not required.

setstart   Int64

Integer array containing the offsets in the setind and refval arrays indicating the start of the sets. This array is of length nsets+1, the last member containing the offset where set nsets+1 would start. May be null if not required.

setind   Int32

Integer array of length setstart[nsets]-1 containing the columns in each set. May be null if not required.

refval   Double

Double array of length setstart[nsets]-1 containing the reference row entries for each member of the sets. These define the order for SOS2 constraints and may be used in branching for both types. May be null if not required.

Reference