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view plotDerivative.jl @ 64:a88222fc01de cell_based_test

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Make EquidistantGrid more concrete
author Jonatan Werpers <jonatan@werpers.com>
date Thu, 17 Jan 2019 15:19:33 +0100
parents 27a8d3021a1c
children 8d505e9bc715
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g = sbp.Grid.EquidistantGrid(200,(0, 2pi))
op =sbp.readOperator("d2_4th.txt","h_4th.txt")
Laplace = sbp.Laplace1D(g,1,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)