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view plotDerivative2d.jl @ 391:5b09c16d669d default_perf_test

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author Jonatan Werpers <jonatan@werpers.com>
date Thu, 01 Oct 2020 08:28:28 +0200
parents 4300a3fbd818
children 27a8d3021a1c 81d9510cb2d0
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g = sbp.Grid.EquidistantGrid((100,75),((0, 0), (2pi, 3/2*pi)))
op = sbp.readOperator("d2_4th.txt","h_4th.txt")
Laplace = sbp.Laplace2D(g,1,op)

init(x,y) = sin(x) + cos(y)
v = sbp.Grid.evalOn(g,init)

u = zeros(length(v))

sbp.apply!(Laplace,u,v)

@show u
@show u'*u

sbp.Grid.plotgridfunction(g,u)