# # 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 " 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 " to continue" set title "Theta origin at top, increasing clockwise" set ttics norotate offset 1 set theta clockwise top replot pause -1 " to continue" reset