Interactive Contour Plots

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@interact

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def _(cmap=['cool','prism','jet','flag',

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            'gnuplot','tab10','tab20']):

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    var('x,y'); f(x,y)=(x^2-y)*sin(x*y); t=3

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    ld={-t:'f=-%d'%t,0:'f=0',t:'f=%d'%t}

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    cp=contour_plot(f,(x,-t,t),(y,-t,t),

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                    contours=[-t,0,t],fill=False,

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                    cmap=cmap,labels=True,label_inline=True,

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                    label_fmt=ld,label_colors='black')

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    cp.show(figsize=(5,5))

Language: Sage Gap GP HTML Macaulay2 Maxima Octave Python R Singular

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