Mercurial > repos > public > sbplib_julia

view plotDerivative.jl @ 667:f3a0d1f7d842 feature/laplace_opset

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Make Laplace a type storing relevant operators used when writing a scheme, e.g. quadratures, normal derivatives etc.
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Sun, 31 Jan 2021 21:04:02 +0100
parents 8d505e9bc715
children
line wrap: on
line source

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)