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`***** ElmerGrid input file for structured grid generation *****`

Version = 210903

Coordinate System = Cartesian 2D

Subcell Divisions in 2D = 1 1

Subcell Limits 1 = 0 5

Subcell Limits 2 = 0 1

Material Structure in 2D

1

End

Materials Interval = 1 1

shape 1 below:

and the geometry mapping below maps it to 2:

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`Geometry Mappings`

! mode line limits(2) Np params(Np)

1 0 1.0 1.0 8 0.0 0.1 1.0 -0.1 3.0 0.1 5.0 -0.1

5 1 1.0 1.0 4 0.0 5.0 3.0 -0.3

End

I have read section "2.3 Mapping modes" of ElmerGrid manual several times but I can't get my head around it. I can't understand the anatomy of the syntax. what those columns "mode", "line", "limits(2)", "Np" "params(Np)" and numbers blow them mean? maybe there are more documentations with details explaining the the syntax?