Based on File:Rose-rhodonea-curve-7x7-chart.svg, which was in turn inflenced by File:Rhodonea_curve.png (but with the rows reversed in the layout of the chart).

This graphic converted from the following PostScript vector source code (a slight modification of that used to produce File:Rose-rhodonea-curve-7x7-chart.svg):

%!
1 0 0 setrgbcolor 0 0 moveto 600 0 rlineto 0 760 rlineto -600 0 rlineto
closepath stroke 0 setgray -4 681 translate/Times-Roman 28 selectfont 10
36 moveto(d)show 30 60 moveto(n)show 22.5 49 moveto(\\)show/Times-Roman
42 selectfont 1 1 9{/d exch def 12 -18 moveto d 1 string cvs show 1 1
7{/n exch def gsave n 80 mul 0 translate d 1 eq{-10 44 moveto n 1 string
cvs show}if 36 dup scale .01 setlinewidth 1 .92 1 setrgbcolor 0 0 1 0
360 arc closepath fill 0 setgray n d gt{/res n def}{/res d def}ifelse/w{
d mul res div/th exch def th n mul d div/x exch def x sin th cos mul x
sin th sin mul}def 0 w moveto 1 1 360 res mul{w lineto}for stroke
grestore}for 0 -80 translate}for showpage
%EOF