Environment for creative processing of text and numerical data

Spiral

S.Mustonen (1976), Survo Users' Guide (1992), p. 332

Edit field:

   1 *
   2 *HEADER=  FRAME=3 SIZE=1164,1164 DEVICE=PS,SPIRAL.PS
   3 *XDIV=0,1,0 YDIV=0,1,0 SCALE=-23,23 T=300,600,0.01
   4 *PLOT X(T)=0.03*T*(exp(-1+sin(17*T)))*cos(T), 
   5 *     Y(T)=0.09*T*(exp(-1.9+cos(11*T)))*sin(T+0.5) 
   6 *

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