Excel VBA with Solver Solutions

Orbit

New Member
Joined
May 18, 2014
Messages
24
So here is my issue. I am trying to write a loop that performs a function using solver. Basically it starts in one cell, runs solver, moves the target and constraint cells to the right one, solves, moves target and contraint cells to the right 14, solves, right one, solves, right 14 solves, until it finds a blank.
Here is the first few lines of code to show you what I am doing in the long version, but I would like to write it in a loop so that if I need to make edits, it does not take as long. My main issue is how to get the cells to move properly.
<code style="margin: 0px; padding: 0px; border: 0px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; white-space: inherit;">Range("RI6").Select
SolverOk SetCell
:="$RI$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$RG$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$RI$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$RI$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("RJ16").Select
SolverOk SetCell
:="$RJ$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$RJ$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$RJ$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$RJ$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("RX16").Select
SolverOk SetCell
:="$RX$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$RX$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$RX$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$RX$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("RY16").Select
SolverOk SetCell
:="$RY$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$RY$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$RY$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$RY$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("SM16").Select
SolverOk SetCell
:="$SM$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$SM$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$SM$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$SM$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("SN16").Select
SolverOk SetCell
:="$SN$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$SN$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$SN$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$SN$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("TB16").Select
SolverOk SetCell
:="$TB$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$TB$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$TB$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$TB$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("TC16").Select
SolverOk SetCell
:="$TC$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$TC$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$TC$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$TC$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("TQ16").Select
SolverOk SetCell
:="$TQ$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$TQ$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$TQ$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$TQ$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("TR16").Select
SolverOk SetCell
:="$TR$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$TR$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$TR$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$TR$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("UF16").Select
SolverOk SetCell
:="$UF$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$UF$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$UF$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$UF$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)
Range
("UG16").Select
SolverOk SetCell
:="$UG$16", MaxMinVal:=3, ValueOf:=0.15, ByChange:="$UG$1", _
Engine
:=1, EngineDesc:="GRG Nonlinear"
SolverAdd CellRef
:="$UG$1", Relation:=3, FormulaText:="74"
SolverAdd CellRef
:="$UG$1", Relation:=1, FormulaText:="87"
SolverSolve
(True)

</code>Thank you in advance for any help / advice.
 
Last edited:

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Eric W

MrExcel MVP
Joined
Aug 18, 2015
Messages
10,603
This is not tested on your code, but I've done similar things in the past. It should at least show you how to change the ranges. I also recommend using the SolverReset function, otherwise every succeeding Solve will try to use previously defined constraints.

Code:
MyCol = 477   ' Column RI

While Cells(16, MyCol) <> ""
    SolverReset
    SolverOk SetCell:=Cells(16, MyCol), MaxMinVal:=3, ValueOf:=0.15, ByChange:=Cells(16, MyCol), _
        Engine:=1, EngineDesc:="GRG Nonlinear"
    SolverAdd CellRef:=Cells(MyCol, 1), Relation:=3, FormulaText:="74"
    SolverAdd CellRef:=Cells(MyCol, 1), Relation:=1, FormulaText:="87"
    SolverSolve (True)

    SolverReset
    SolverOk SetCell:=Cells(16, MyCol + 1), MaxMinVal:=3, ValueOf:=0.15, ByChange:=Cells(16, MyCol + 1), _
        Engine:=1, EngineDesc:="GRG Nonlinear"
    SolverAdd CellRef:=Cells(1, MyCol + 1), Relation:=3, FormulaText:="74"
    SolverAdd CellRef:=Cells(1, MyCol + 1), Relation:=1, FormulaText:="87"
    SolverSolve (True)

    MyCol = MyCol + 14
Wend
 

Orbit

New Member
Joined
May 18, 2014
Messages
24
Thank you. I only had to make a minor adjustment to the code in order to get it to work with my sheet.

I really appreciate the help.
 

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