[Gmsh] Problem with cutgrid plugin

[Lachlan Mason]

Hi,

I am having problems when using the cutgrid plugin to make a line profile
though a scalar field. The sample ".msh" file containing the mesh is
attached with the ".opt" options file used for the cutgrid plugin.

When I make a two-dimensional plot of the scalar field value over a range of
x-coordinates the profile is identically zero (ie. 0) for particular regions
of x-coordinate points. This is shown in the ".png" file attached.

Can you please help me with this issue? I am using Gmsh 2.5.0.

Regards,

Lachlan Mason
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