public result Simplex(int cols, int rows, OptimisationDirection direction, bound[] rowbounds, bound[] colbounds, int[] ia, int[] ja, double[] ar, double[] coeff)
{
LPProblem p = new LPProblem();
p.ObjectiveDirection = direction;
p.AddCols(cols);
p.AddRows(rows);
for (int i = 0; i < rowbounds.Length; i++)
{
p.SetRowBounds(i + 1, rowbounds[i].BoundType, rowbounds[i].lower, rowbounds[i].upper);
}
for (int i = 0; i < colbounds.Length; i++)
{
p.SetColBounds(i + 1, colbounds[i].BoundType, colbounds[i].lower, colbounds[i].upper);
}
p.LoadMatrix(ia, ja, ar);
//p.SetMatRow(1, new int[] {0, 1, 2 }, new double[] {0, 1, 1 });
for (int i = 0; i < coeff.Length; i++)
{
p.SetObjCoef(i+1, coeff[i]);
}
p.SolveSimplex();
Console.WriteLine("result = {0}, x1 = {1}, x2 = {2}", p.GetObjectiveValue(), p.GetColPrimal(1), p.GetColPrimal(2));
//Console.In.ReadLine();
result r = new result();
r.ObjResult = p.GetObjectiveValue();
r.Columns = new double[cols];
for (int i = 0; i < cols; i++)
{
r.Columns[i] = p.GetColPrimal(i + 1);
}
return r;
}
public result Simplex(int cols, int rows, OptimisationDirection direction, bound[] rowbounds, bound[] colbounds, int[] ia, int[] ja, double[] ar, double[] coeff)
{
LPProblem p = new LPProblem();
p.ObjectiveDirection = direction;
p.AddCols(cols);
p.AddRows(rows);
for (int i = 0; i < rowbounds.Length; i++)
{
p.SetRowBounds(i + 1, rowbounds[i].BoundType, rowbounds[i].lower, rowbounds[i].upper);
}
for (int i = 0; i < colbounds.Length; i++)
{
p.SetColBounds(i + 1, colbounds[i].BoundType, colbounds[i].lower, colbounds[i].upper);
}
p.LoadMatrix(ia, ja, ar);
//p.SetMatRow(1, new int[] {0, 1, 2 }, new double[] {0, 1, 1 });
for (int i = 0; i < coeff.Length; i++)
{
p.SetObjCoef(i + 1, coeff[i]);
}
p.SolveSimplex();
Console.WriteLine("result = {0}, x1 = {1}, x2 = {2}", p.GetObjectiveValue(), p.GetColPrimal(1), p.GetColPrimal(2));
//Console.In.ReadLine();
result r = new result();
r.ObjResult = p.GetObjectiveValue();
r.Columns = new double[cols];
for (int i = 0; i < cols; i++)
{
r.Columns[i] = p.GetColPrimal(i + 1);
}
return(r);
}
private static void TestDavide()
{
LPProblem p = new LPProblem();
p.ObjectiveDirection = OptimisationDirection.MAXIMISE;
p.AddCols(3);
p.AddRows(3);
p.SetRowBounds(1, BOUNDSTYPE.Upper, 0, 100);
p.SetRowBounds(2, BOUNDSTYPE.Upper, 0, 600);
p.SetRowBounds(3, BOUNDSTYPE.Upper, 0, 300);
p.SetColBounds(1, BOUNDSTYPE.Lower, 0, 0);
p.SetColBounds(2, BOUNDSTYPE.Lower, 0, 0);
p.SetColBounds(3, BOUNDSTYPE.Lower, 0, 0);
int[] ia = new int[] { 0, 1, 1, 1, 2, 2, 2, 3, 3, 3 };
int[] ja = new int[] { 0, 1, 2, 3, 1, 2, 3, 1, 2, 3 };
double[] ar = new double[] { 0, 1, 1, 1, 10, 4, 5, 2, 2, 6 };
p.LoadMatrix(ia, ja, ar);
//p.SetMatRow(1, new int[] {0, 1, 2 }, new double[] {0, 1, 1 });
p.SetObjCoef(1, 10);
p.SetObjCoef(2, 6);
p.SetObjCoef(3, 4);
p.SolveSimplex();
Console.WriteLine("result = {0}, x1 = {1}, x2 = {2}", p.GetObjectiveValue(), p.GetColPrimal(1), p.GetColPrimal(2));
Console.In.ReadLine();
}
private static void TestDavide()
{
LPProblem p = new LPProblem();
p.ObjectiveDirection = OptimisationDirection.MAXIMISE;
p.AddCols(3);
p.AddRows(3);
p.SetRowBounds(1, BOUNDSTYPE.Upper, 0, 100);
p.SetRowBounds(2, BOUNDSTYPE.Upper, 0, 600);
p.SetRowBounds(3, BOUNDSTYPE.Upper, 0, 300);
p.SetColBounds(1, BOUNDSTYPE.Lower, 0, 0);
p.SetColBounds(2, BOUNDSTYPE.Lower, 0, 0);
p.SetColBounds(3, BOUNDSTYPE.Lower, 0, 0);
int[] ia = new int[] { 0, 1, 1, 1, 2, 2, 2, 3, 3, 3};
int[] ja = new int[] { 0, 1, 2, 3, 1, 2, 3, 1, 2, 3};
double[] ar = new double[] { 0, 1, 1, 1, 10, 4, 5, 2, 2, 6 };
p.LoadMatrix(ia, ja, ar);
//p.SetMatRow(1, new int[] {0, 1, 2 }, new double[] {0, 1, 1 });
p.SetObjCoef(1, 10);
p.SetObjCoef(2, 6);
p.SetObjCoef(3, 4);
p.SolveSimplex();
Console.WriteLine("result = {0}, x1 = {1}, x2 = {2}", p.GetObjectiveValue(), p.GetColPrimal(1), p.GetColPrimal(2));
Console.In.ReadLine();
}
