[Gmsh] Characteristic Length

[Jehanzeb Hameed]

Hi,

I cant understand how "Characteristic Length" works in gmsh. I specify 4
points (which are corner of a square, bottom left = (-1,-1) , top right =
(1,1)  ). The points have characteristic length 0.5  . I mesh this domain. I
cant figure out what the relationship between radius of the circumscribed
circle and characteristic length is. The documentation says this:

"The size of the mesh elements will then be computed by linearly
interpolating these characteristic lengths on the initial mesh".

I cant understand between what values is the size of the mesh elements being
interpolated. How can I find this out?

Thanks,
-Jehanzeb
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