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| Lína 32: |
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| |} | | |} |
| <center>Við höfum í augnablikinu {{NUMBEROFARTICLES}} greinar.</center> | | <center>Við höfum í augnablikinu {{NUMBEROFARTICLES}} greinar.</center> |
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| <math>\frac{\sin\left(\sqrt{x^2+y^2}\right)}{\sqrt{x^2+y^2}}:</math>
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| <plot>set border 4095 lt -1 lw 1.000
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| set view 130, 10, 1, 1
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| set samples 50, 50
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| set isosamples 50, 50
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| unset surface
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| set pm3d at s
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| set pm3d scansbackward flush begin noftriangles nohidden3d implicit corners2color mean
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| splot sin(sqrt(x**2+y**2))/sqrt(x**2+y**2)</plot>
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| Julia set:
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| <plot>set pm3d at s solid
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| set palette rgb -6,-15,-7
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| unset colorbox
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| set ticslevel 0
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| unset ztics
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| unset surface
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| set samples 70
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| set isosamples 70,70
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| complex(x,y)=x*{1,0}+y*{0,1}
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| mandel(x,y,z,n) = (abs(z)>2.0 || n>=1000)? log(n): mandel(x,y,z*z+complex(x,y),n+1)
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| a=-0.38
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| b=-0.612
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| set multiplot
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| set origin 0,0
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| set size 0.55,0.77
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| splot [-0.5:0.5][-0.5:0.5] mandel(a,b,complex(x,y),0)
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| set origin 0.35,-0.15
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| set size 0.7,0.96
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| set view 0,0,,,
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| splot [-0.5:0.5][-0.5:0.5] mandel(a,b,complex(x,y),0)</plot>
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| Figure-8 Klein bottle:
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| <plot>x(u,v)= cos(u)*(cos(u/2)*cos(v)+sin(u/2)*sin(2*v)+3.0)
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| y(u,v)= -sin(u)*(cos(u/2)*cos(v)+sin(u/2)*sin(2*v)+3.0)
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| z(u,v)= -sin(u/2)*cos(v)+cos(u/2)*sin(2*v)
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| set pm3d explicit
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| set palette rgb 3,7,9
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| unset colorbox
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| set parametric
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| set hidden3d
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| set ticslevel 0
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| unset key
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| set isosamples 40,40
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| set view 65,70,1,1
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| set urange[-0.5*pi:1.5*pi]
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| set vrange[-pi:pi]
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| set zrange[-2:2]
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| set multiplot
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| splot x(u,v),y(u,v),z(u,v) w pm3d
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| splot x(u,v),y(u,v),z(u,v) lt 6</plot>
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