faceEdges
Description
Examples
Find edges belonging to the top and bottom faces of a block.
Create a block geometry.
gm = multicuboid(3,2,1)
gm =
DiscreteGeometry with properties:
NumCells: 1
NumFaces: 6
NumEdges: 12
NumVertices: 8
Vertices: [8×3 double]
Plot the geometry with the face labels.
pdegplot(gm,"FaceLabels","on","FaceAlpha",0.2)
Find edges belonging to faces 1 and 2.
edgeIDs = faceEdges(gm,[1 2])
edgeIDs = 1×8
1 2 3 4 5 6 7 8
Plot the geometry with the edge labels.
figure pdegplot(gm,"EdgeLabels","on","FaceAlpha",0.2)
Find edges belonging to two faces of the L-shaped membrane.
Create a model and include this geometry. The geometry of the L-shaped membrane is described in the file lshapeg.
model = createpde(); gm = geometryFromEdges(model,@lshapeg)
gm =
AnalyticGeometry with properties:
NumCells: 0
NumFaces: 3
NumEdges: 10
NumVertices: 8
Vertices: [8×2 double]
Plot the geometry with the face labels.
pdegplot(gm,"FaceLabels","on")
Find edges belonging to faces 1 and 2.
edgeIDs = faceEdges(gm,[1 2])
edgeIDs = 1×8
1 2 3 6 7 8 9 10
Plot the geometry with the edge labels.
figure pdegplot(gm,"EdgeLabels","on")
Find edges belonging to the side face of the inner cuboid in a geometry consisting of two nested cuboids.
Create a geometry that consists of two nested cuboids of the same height.
gm = multicuboid([2 5],[4 10],3)
gm =
DiscreteGeometry with properties:
NumCells: 2
NumFaces: 12
NumEdges: 24
NumVertices: 16
Vertices: [16×3 double]
Plot the geometry with the face labels.
pdegplot(gm,"FaceLabels","on","FaceAlpha",0.2)
Find all edges belonging to the side face of the inner cuboid.
edgeIDs = faceEdges(gm,6)
edgeIDs = 1×4
1 5 10 12
From all edges belonging to that face, return the edges belonging to only the internal faces. Internal faces are faces shared between multiple cells.
edgeIDs = faceEdges(gm,6,"internal")edgeIDs = 1×2
10 12
From all edges belonging to that face, return the edges belonging to the external faces.
edgeIDs = faceEdges(gm,6,"external")edgeIDs = 1×2
1 5
Plot the geometry with the edge labels.
pdegplot(gm,"EdgeLabels","on","FaceAlpha",0.2)
