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lpdemo.drw
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Text File
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1991-02-26
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1KB
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37 lines
!This file is a demonstration of the graphical prosentation of
!the following linear programming problem
!Load it using command ld demo.drw
!The exclamation marks (!) can be used for commenting
!Max 600x1 + 200x2
!subject to
! x1 < 6
! x2 < 10
! 10x1 + 20x2 < 160
! 300x1 + 200x2 < 2400
! x1, x2 > 0
nw !New, clear and reset
ik r !Ink, red
li 600,200, 0 !Line, Objective function slope
li 600,200, 800
li 600,200,4200 !Line, Optimal value
ik y !Ink, yellow;
li 1, 0, 6 !Line, First constraint
li 0, 1, 10 !Line, Second constraint
li 10, 20, 160 !Line, Third constraint
li 300,200,2400 !Line, Fourth constraint
ax !Redraw axes (must be pacthed lest fill leaks)
fi 1,1 !Fill the area around 1,1 bordered by yellow
po 6,3 !Point at the optimal solution
lb 9, 4, 10x1+20x2<160 !Labels
lb 6.2, 6, x1<6
lb 2, 10.7, x2<10
lb 3, 8, 300x1+200x2<2400
!LPDEMO.DRW ready