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view plotDerivative2d.jl @ 90:2882e1318cc3 patch_based_test

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Add TODO:s on how to remove allocations in apply! for Laplace2d
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 25 Jan 2019 16:49:09 +0100
parents 81d9510cb2d0
children 8d505e9bc715
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g = sbp.Grid.EquidistantGrid((100,75), (0.0, 0.0), (2pi, 3/2*pi))
op = sbp.readOperator("d2_4th.txt","h_4th.txt")
Laplace = sbp.Laplace(g, 1.0, 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)