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view plotDerivative.jl @ 54:4300a3fbd818

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switch grid to Grid in diffOp
author Ylva Rydin <ylva.rydin@telia.com>
date Mon, 14 Jan 2019 16:30:52 +0100
parents 614b56a017b9
children 27a8d3021a1c 81d9510cb2d0
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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) = sin(x)
v = sbp.Grid.evalOn(g,init)
u = zeros(length(v))

sbp.apply!(Laplace,u,v)

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