[Paraview] Help with unstructured grid

[Gerrit Laube]

Hi,

I am not really familiar with vtk DataFiles but from a first look, I 
would say you are missing a "write(113,*) 'POINTS' nx*ny*nz float" line 
after the Dimensions.

On page 3 of:
http://www.vtk.org/VTK/img/file-formats.pdf

it says:
DATASET STRUCTURED_GRID
DIMENSIONS nx ny nz
POINTS n dataType
p0x p0y p0z
p1x p1y p1z
...
p(n-1)x p(n-1)y p(n-1)z

And I think the number of Point_Data-sets should be nx*ny*nz instead of 
nx, although you did not tell us too much about your problem. If this 
does not work you should post the output file, of lets say a 4 point 
grid from your code, instead of the source.

Good luck!

Am 08.08.2013 04:09, schrieb George Howitt:
> Hi
>
> I have a fortran code that I'm trying to get streamlines from. The code
> generates a spherical grid of points and a velocity on each of those
> points.
>
> I have been using a structured grid but paraview doesn't seem to read
> the vectors, instead it thinks they are more grid points and plots them
> as such. From what I've read it looks like I need to use an unstructured
> grid but I don't know how to set up the cell commands for that.
>
> Here are the lines of my code that write the .vts files:
>
>
>          write(113,*) '# vtk DataFile Version 3.0'
>          write(113,*) 'This is the cartesian velocity field'
>          write(113,*) 'ASCII'
>          write(113,*) 'DATASET STRUCTURED_GRID'
>          write(113,*) 'DIMENSIONS',nx,ny,nz
>
>          do k = 1, nphi + 1
>          do j = 1, nth  + 2
>          do i = 1, nr
>          write(113,*) xc(i,j,k), yc(i,j,k), zc(i,j,k)
>          enddo
>          enddo
>          enddo
>
> write(113,*) 'POINT_DATA',nx
> write(113,*) 'VECTORS velocityfield float'
> write(113,*) 'LOOKUP_TABLE default'
>
>          do k = 1, nphi + 1
>          do j = 1, nth  + 2
>          do i = 1, nr
>          write(113,*) ux(i,j,k), uy(i,j,k), uz(i,j,k)
>          enddo
>          enddo
>          enddo
>
> Could anyone let me know how I should modify this for an unstructured grid?
>
> Thanks
> George
>
>
>
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