GLE Library: contour.gle
! Subroutines to draw contour plots
sub contour_labels file$ fmt$
! draws the labels on a contour plot
!
! file$ = filename of file with label data
! fmt$ = format string used to format labels
set just cc hei 0.25 color blue
fopen file$ f1 read
until feof(f1)
fread f1 x y i v
amove xg(x) yg(y)
s$ = format$(v, fmt$)
begin box add 0.05 fill white
write s$
end box
write s$
next
fclose f1
end sub
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