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view plotDerivative.jl @ 479:95f3b9036801 feature/compose_identity_mappings

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Specialize composition operator for composing a tensormapping with an identitymapping.
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Wed, 04 Nov 2020 20:03:37 +0100
parents 8d505e9bc715
children
line wrap: on
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g = sbp.Grid.EquidistantGrid((200,), (0.0,), (2pi,))
op =sbp.readOperator("d2_4th.txt","h_4th.txt")
Laplace = sbp.Laplace(g,1.0,op)

init(x) = cos(x)
v = sbp.Grid.evalOn(g,init)
u = zeros(length(v))

sbp.apply!(Laplace,u,v)

@show u
sbp.Grid.plotgridfunction(g,u)