[Gmsh] Mesh element size for geography

[Rudin, Andrew]

So I'm trying to create a 2D mesh of triangles for a geographic study
area. The study area is about 200km by 200km in size.  I want a mesh
covering that area with average triangle areas of 10km.  After trying
some sample meshes I cannot see how the 'element size' property of my
polygon's points correlates to real world areas of lengths of edges.  Is
there some sort of formula for translating the 'element size' on points
to the average area of output triangles, or average length of sides of
output triangles?
 
Thank you
 
Andrew Rudin
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20111213/698af5cf/attachment.html>