Initializing help system before first use

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

Enables the user to pass a matrix directly to the Optimizer, rather than reading the matrix from a file.
Namespace: Optimizer
Assembly: xprsdn (in xprsdn.dll) Version: 46.01.02+e8d9493ad804415424ae931ce2abaeb6c55a6d5a
Syntax
C#

    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 String
  A string of up to MAXPROBNAMELENGTH characters containing a name for the problem. If probname is null, the problem name will be an empty string.
ncols Int32
  Number of structural columns in the matrix.
nrows 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 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.
  May be null if the problem contains no rows.
rhs 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. May be null if the problem contains no rows.
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 contains one entry for each column, plus one more if collen is null. If collen is null, the last entry of start contains the position in the rowind and rowcoef arrays at which an extra column would start, if it were present. This value is also the length of the rowind and rowcoef arrays. May be null if the problem contains no coefficients.
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 contiguous, and the start array has an additional entry as described above.
rowind Int32
  Integer array containing the row indices for the nonzero elements in each column. May be null if the problem contains no coefficients. If the indices are input contiguously, with the columns in ascending order, the length of the rowind array is found by adding the start entry for the last column to the collen entry for the last column, or if collen is null, by the additional entry at the end of start.
rowcoef Double
  Double array containing the nonzero element values; length as for rowind. May be null if the problem contains no coefficients.
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. If this is null then all upper bounds are infinite.

Remarks
Examples using LoadLP:

- LoadLP.cs

See Also

#### Reference

XPRSprob Class
LoadLP Overload
Optimizer Namespace
Parent Topic LoadLP Method

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