[Gmsh] Different interpolation schemes

[Martin Vymazal]

Hello Marios,

 could you check that gmsh plots the values in vertices and not in 
barycenters?
You can verify this by clicking on Tools->Options, then select your 
postprocessing view, go to tab 'Aspect' and look at 'Glyph location'.

Best regards,

  Martin Vymazal

On Sunday 03 November 2013 19:03:56 Marios Papadopoulos wrote:
> Dear gmshers,
> 
> attached you will find two contour plots from a scalar field. The first one
> (contour1.png) was made with gmsh using $NodeData feature, without using
> any extra $InterpolationScheme rule info. The second one (contour2.png) was
> made using another post-processing software with the same nodal values.
> This second image is the right represantion of the contour for the scalar
> field.
> 
> As you notice, gmsh interpolate the nodal values with a "wrong" way.
> Ignoring the color mapping, how i can use the $InterpolationScheme feature
> in .msh format in order to get the right distribution inside the elements
> from the corresponding nodal values?
> 
> i.e.
> $InterpolationScheme
> "name"
> number-of-element-topologies
> elm-topology
> number-of-interpolation-matrices
> num-rows num-columns value
> ... ...
> $EndInterpolationScheme
> 
> Thank you in advance!