[Gmsh] Extruding Anisotropic Mesh

[Aaron St. George]

We are trying to vertically extrude a 2d anisotripic mesh created using a
backgroud view into a 3d mesh with 10 layers and a height of 1.

We are using a .geo file with the following comands

Merge "Tresh_0_to_80_1km_to_20km.msh";
Extrude {0,0,10000} {Surface{706}; Layers{10};}

When we run script we get hundreds of error messages like the following.

Error   : Could not find extruded vertex (2128061.885689847,
-1286760.196457537, 10000)
Info    : Linear search for (2129068.435938109, -1287560.695624833, 10000)

Though it doesn't seem to crash it also doesn't seem to workl. It may be
working - just really really slowly.

What are we doing wrong?

Thanks!

- files attatched
 extrude.geo<https://docs.google.com/file/d/0BynN8hFLEJZlT054ajE3el90VnM/edit?usp=drive_web>

 Thresh_0_to_80_1km_to_20km.msh<https://docs.google.com/file/d/0BynN8hFLEJZlV0FyUWcwV19jSVU/edit?usp=drive_web>

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