Initializing help system before first use

loadqcqp

Purpose
Used to load a quadratic problem with quadratic side constraints into the Optimizer data structure.
Such a problem may have quadratic terms in its objective function as well as in its constraints.
Synopsis
loadqcqp(
prob,
probname,
rowtype,
rhs,
rng,
objcoef,
start,
collen,
rowind,
rowcoef,
lb,
ub,
objqcol1,
objqcol2,
objqcoef,
qrowind,
nrowqcoef,
rowqcol1,
rowqcol2,
rowqcoef,
ncols = x_max_vec_length(objcoef, lb, ub),
nrows = x_max_vec_length(rowtype, rhs, rng),
nobjqcoefs = x_max_vec_length(objqcol1, objqcol2, objqcoef),
nqrows = x_max_vec_length(qrowind, nrowqcoef)
)
Arguments
prob 
The current problem.
probname 
A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.
rowtype 
Character array of length nrows containing the row types:
L
indicates a <= constraint (use this one for quadratic constraints as well);
E
indicates an = constraint;
G
indicates a >= constraint;
R
indicates a range constraint;
N
indicates a nonbinding constraint.
rhs 
Double array of length nrows containing the right hand side coefficients of the rows.
rng 
Double array of length nrows containing the range values for range rows.
objcoef 
Double array of length ncols containing the objective function coefficients.
start 
Integer array containing the offsets in the rowind and rowcoef arrays of the start of the elements for each column.
collen 
Integer array of length ncols containing the number of nonzero elements in each column.
rowind 
Integer array containing the row indices for the nonzero elements in each column.
rowcoef 
Double array containing the nonzero element values; length as for rowind.
lb 
Double array of length ncols containing the lower bounds on the columns.
ub 
Double array of length ncols containing the upper bounds on the columns.
objqcol1 
Integer array of size nobjqcoefs containing the column index of the first variable in each quadratic term.
objqcol2 
Integer array of size nobjqcoefs containing the column index of the second variable in each quadratic term.
objqcoef 
Double array of size nobjqcoefs containing the quadratic coefficients.
qrowind 
Integer array of size nqrows, containing the indices of rows with quadratic matrices in them.
nrowqcoef 
Integer array of size nqrows, containing the number of nonzeros in each quadratic constraint matrix.
rowqcol1 
Integer array of size nqcelem, where nqcelem equals the sum of the elements in nrowqcoef (i.e. the total number of quadratic matrix elements in all the constraints).
rowqcol2 
Integer array of size nqcelem, containing the second index for the quadratic constraint matrices.
rowqcoef 
Integer array of size nqcelem, containing the coefficients for the quadratic constraint matrices.
ncols 
Number of structural columns in the matrix.
nrows 
Number of rows in the matrix (not including the objective row).
nobjqcoefs 
Number of quadratic terms.
nqrows 
Number of rows containing quadratic matrices.
Return value
The input argument prob.
Further information
Please refer to the C documentation for more details.

Parent Topic R interface reference manual

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