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27 lines
741 B
Gnuplot
27 lines
741 B
Gnuplot
# set terminal png transparent nocrop enhanced font arial 8 size 420,320
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# set output 'surface1.17.png'
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set dummy u,v
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set parametric
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set view 70, 20, 1, 1
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set samples 51, 51
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set isosamples 30, 33
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set hidden3d offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
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sinc(u,v) = sin(sqrt(u**2+v**2)) / sqrt(u**2+v**2)
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xx = 6.08888888888889
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dx = 1.11
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x0 = -5
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x1 = -3.89111111111111
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x2 = -2.78222222222222
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x3 = -1.67333333333333
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x4 = -0.564444444444444
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x5 = 0.544444444444445
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x6 = 1.65333333333333
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x7 = 2.76222222222222
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x8 = 3.87111111111111
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x9 = 4.98
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xmin = -4.99
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xmax = 5
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n = 10
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zbase = -1
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splot [u=.5:3*n-.5][v=-4.99:4.99] xmin+floor(u/3)*dx, v, ((floor(u)%3)==0) ? zbase : (((floor(u)%3)==1) ? sinc(xmin+u/3.*dx,v) : 1/0) notitle
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