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#
# Use of "set ttics" to place angular labels around polar grid
#
set title "Angle labels (ttics) for polar plots" offset 0,1
set polar
set ttics 0,30 format "%g".GPVAL_DEGREE_SIGN font ":Italic"
set mttics 3
set grid r polar 60
unset xtics
unset ytics
set border 0
set size square
unset key
set rrange [0:6.1]
if (GPVAL_ENCODING eq "utf8") {
set ttics add ("π" 180, "π/2" 90, "3π/2" 270)
} else {
set ttics add ("pi" 180, "pi/2" 90, "3pi/2" 270)
}
plot t lt 3 lw 2, -t lt 4 lw 2
#
pause -1 "<cr> to continue"
set title "Polar plot with border and rotated labels for ttics"
set ttics rotate
set rrange [0:6.5]
set border polar
replot
pause -1 "<cr> to continue"
set title "Theta origin at top, increasing clockwise"
set ttics norotate offset 1
set theta clockwise top
replot
pause -1 "<cr> to continue"
reset
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