#
# demo for the use of "set object circle" and "plot ... with circles"
#
# Ethan A Merritt, Ralf Juengling - 2007,2008
set size ratio -1
set style fill solid 1.0 border -1
set obj 10 circle arc [ 0 : 20] fc rgb "red"
set obj 11 circle arc [ 20 : 50] fc rgb "orange"
set obj 12 circle arc [ 50 : 90] fc rgb "yellow"
set obj 13 circle arc [ 90 : 120] fc rgb "forest-green"
set obj 14 circle arc [120 : 190] fc rgb "dark-turquoise"
set obj 15 circle arc [190 : 360] fc rgb "dark-magenta"
set obj 10 circle at screen .18,.32 size screen .10 front
set obj 11 circle at screen .18,.32 size screen .10 front
set obj 12 circle at screen .18,.32 size screen .10 front
set obj 13 circle at screen .1767,.342 size screen .10 front
set obj 14 circle at screen .18,.32 size screen .10 front
set obj 15 circle at screen .18,.32 size screen .10 front
set obj 20 rect from graph 0,0 to graph 1,1 behind fc rgb "cyan" fs solid 0.2
# plot world map and correspondent locations as a circle
set title ""
set xlabel "Note that overlapping transparent circles produce a darker area"
unset key
unset xtics
unset ytics
set border
set yrange [-70:*]
plot 'world.dat' with filledcurves lc rgb "light-green" , \
'world.cor' using 1:2:(7.*rand(0)) with circles lt 3 \
fs transparent solid 0.5 noborder
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# by Peter Juhasz - 2010
reset
set style fill solid 1.0 border -1
set size ratio -1
# Plot pie charts on top of the map of the world.
# The pie segments are read from a data file.
# Each segment has to be specified with a start and end angle.
set title "Sources of energy production, plotted for each continent"
unset key
unset xtics
unset ytics
set border
set yrange [-70:*]
set palette model HSV func gray*0.75, 0.5, 0.99
unset colorbox
r = 0.01
types = 6
keyx = -137.
keyy = -15.
keyr = 25.
set obj 20 rect from graph 0,0 to graph 1,1 behind fc rgb "cyan" fs solid 0.2
set angle degree
plot 'world.dat' with filledcurves lc rgb "light-green" notit, \
'energy_circles.dat' using 2:1:(sqrt($9)*r):6:($6+$7):5 \
with circles lc pal fs solid 1.0 border rgb "gray",\
for [i=0:types-1] '' using (keyx):(keyy):(keyr-5):(-(i+1)*360./types):(-(i)*360./types):5 \
every ::i::i with circles lc pal fs solid 1.0 border rgb "gray",\
for [i=0:types-1] '' using \
(keyx+keyr*cos(-(i+0.5)*360./types)):(keyy+keyr*sin(-(i+0.5)*360./types)):4 \
every ::i::i with labels
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# by Ralf Juengling - 2008
reset
set title "Trace of unconstrained optimization with trust-region method"
unset key
set size ratio -1
set xrange [-2.5:1.5]
set yrange [-1:2.5]
plot 'optimize.dat' with circles lc rgb "blue" fs transparent solid 0.15 noborder,\
'optimize.dat' u 1:2 with linespoints lw 2 lc rgb "black"
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reset
set size ratio -1
set title "Lena's key points"
unset xtics
unset ytics
unset key
unset border
set yrange [] reverse
plot 'lena.rgb' binary array=(128,128) dx=4 dy=4 format='%uchar' with rgbimage, \
'lena-keypoints.bin' binary format='%double' with circles lc rgb "yellow"
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reset
set size ratio -1
set title "Delaunay triangulation of Hemisphere points, some empty circles in red"
unset key
plot 'empty-circles.dat' with circles lw 2 lc rgb "red", \
'delaunay-edges.dat' with lines lc rgb "forest-green", \
'hemisphr.dat' u (100*$1):(100*$2) with points pt 7 lc rgb "black"
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