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view plotDerivative2d.jl @ 109:b3fbef345810 cell_based_test

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Introduce apply! for given indices
author Jonatan Werpers <jonatan@werpers.com>
date Fri, 08 Feb 2019 13:08:07 +0100
parents 8d505e9bc715
children d61bfc8cf6a5
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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)