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

public void LoadLP(
	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
)

Parameters

probname

Type:  System.String
A string of up to MAXPROBNAMELENGTH characters containing a names for the problem.

ncols

Type:  System.Int32
Number of structural columns in the matrix.

nrows

Type:  System.Int32
Number of rows in the matrix (not including the objective). Objective coefficients must be supplied in the objcoef array, and the objective function should not be included in any of the other arrays.

rowtype

Type:  System.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

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

rng

Type:  System.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

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

start

Type:  System.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

Type:  System.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.

rowind

Type:  System.Int32
Integer array containing the row indices for the nonzero elements in each column. If the indices are input contiguously, with the columns in ascending order, the length of the rowind is start[ncols-1]+collen[ncols-1] or, if collen is null, start[ncols].

rowcoef

Type:  System.Double
Double array containing the nonzero element values; length as for rowind.

lb

Type:  System.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

Type:  System.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.

• LoadLP

Reference