16 lines
520 B
Gnuplot
16 lines
520 B
Gnuplot
## plotpoly.gp 1/10/17 aev
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## Plotting a polyspiral and writing to the png-file.
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## Note: assign variables: rng, d, clr, filename and ttl (before using load command).
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## Direction d (-1 clockwise / 1 counter-clockwise)
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reset
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set terminal png font arial 12 size 640,640
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ofn=filename.".png"
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set output ofn
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unset border; unset xtics; unset ytics; unset key;
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set title ttl font "Arial:Bold,12"
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set parametric
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c=rng*pi; set xrange[-c:c]; set yrange[-c:c];
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set dummy t
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plot [0:c] t*cos(d*t), t*sin(d*t) lt rgb @clr
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set output
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