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annotate plotDerivative2d.jl @ 50:2a7d0ed7ac10

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Add script for differentiation and plotting of 2d function
author Jonatan Werpers <jonatan@werpers.com>
date Fri, 11 Jan 2019 11:18:13 +0100
parents
children 4300a3fbd818
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2a7d0ed7ac10 Add script for differentiation and plotting of 2d function
Jonatan Werpers <jonatan@werpers.com>
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1 g = sbp.grid.EquidistantGrid((100,75),((0, 0), (2pi, 3/2*pi)))
2a7d0ed7ac10 Add script for differentiation and plotting of 2d function
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2 op = sbp.readOperator("d2_4th.txt","h_4th.txt")
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3 Laplace = sbp.Laplace2D(g,1,op)
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2a7d0ed7ac10 Add script for differentiation and plotting of 2d function
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5 init(x,y) = sin(x) + cos(y)
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6 v = sbp.grid.evalOn(g,init)
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2a7d0ed7ac10 Add script for differentiation and plotting of 2d function
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8 u = zeros(length(v))
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10 sbp.apply!(Laplace,u,v)
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12 @show u
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13 @show u'*u
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15 sbp.grid.plotgridfunction(g,u)
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