program box
use dcl
integer,parameter :: n=30
double precision a, r
real,dimension(n+1) :: x
real,dimension(n) :: y
!---------------------------- data definition --------------------------
r = 0.2d0
a = 3.7d0
x = (/ (1./n*(i-1), i=1,n+1) /)
do i=1, n
r = a*r*(1.d0-r)
y(i) = r
end do
y(n/2) = 999.
call DclSetParm( 'GLOBAL:LMISS', .true.)
!----------------------------- graph -----------------------------------
call DclOpenGraphics()
call DclNewFrame
call DclSetWindow( xmin=0., xmax=1. )
call DclScalingPoint( y=y )
call DclFitScalingParm
call DclSetTransFunction
call DclDrawScaledAxis
call DclDrawYBoxLine( x, y )
call DclNewFrame
call DclSetWindow( ymin=0., ymax=1. )
call DclScalingPoint( x=y )
call DclFitScalingParm
call DclSetTransFunction
call DclDrawScaledAxis
call DclDrawXBoxLine( y, x )
call DclCloseGraphics
end program
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