[FieldTrip] Project numerical values on a cortical mesh

[Robert Oostenveld]

Dear Fereshte

The mesh should be described with both vertices (points in 3-D space) and triangles (the specification how these points form a surface).

If your values are an Nx1 vector and your mesh is 
  mesh.pos = Nx3 % position of the vertices
  mesh.pos = Mx3 % indices into the vertices that together form M triangles
then you can do
  ft_plot_mesh(mesh, ‘vertexcolor’, val)
which uses one of the low level functions in the plotting module. 

If you organize your data as source structure (e.g. used for reconstructions of cortical activity) you could also use the high-level ft_sourceplot. See "help ft_datatype_source" for documentation on the source structure. 

best regards
Robert






> On 26 May 2018, at 03:09, Fereshte <fereshte.ramezani at gmail.com> wrote:
> 
> Dear Experts,
> I have assigned numerical values to 1000 vertices of a cortical mesh ( a matrix of 1000 rows and 4 columns;  which the first 3 columns show the position of each vertex and the last column shows the numerical value) .How can I project and show these numerical values on the cortical mesh?
> Thanks in advance!
> Regards
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