| Author | Message | ||
     Kurt J. Rüegg (ewl) New member Username: ewl Post Number: 1 Registered: 03-2005 |
I'd like to export vector data with the VTK mechanism to VisIt. With the command "VTK (arg2[,arg2,...])" respective "VTK(vx,vy,vz)" only scalars are exported: first all vx, then all vy and so on. VisIt expects the vectors as VECTORS dataName dataType v0x v0y v0z v1x v1y v1z ... v(n-1)x v(n-1)y v(n-1)z | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 333 Registered: 06-2003 |
We are not experts in the use of VisIt, but the VisIt help implies that you can use curly braces {} to compose components into vectors. Also, it appears that although VisIt will read quadratic-basis files without complaint, none of the operators know how to handle them. We always use VTKLIN output from FlexPDE to reformat the output file as linear basis triangles/tetrahedra for VisIt processing. | ||
| Jesus Ubach (yurixd) New member Username: yurixd Post Number: 1 Registered: 10-2005 |
Hi! This is a short question....! I just want to get a pointer of a image .vtk (3D) using c++ ! I have no idea how to the a pointer with all the values of my image, to work with them in c++ ! And how it would be structured. My image use this format # vtk DataFile Version 3.0 vtk output BINARY DATASET STRUCTURED_POINTS DIMENSIONS 50 50 50 SPACING 4 4 4 ORIGIN 1 1 1 CELL_DATA 117649 POINT_DATA 125000 COLOR_SCALARS scalars i dont mind if i will got a .txt file with the values, or a pointer..but I need to access to all of them. Any idea how to do it ?? | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 466 Registered: 06-2003 |
FlexPDE can export VTK data to visualization packages, but it is not itself a VTK visualization system. Perhaps you should look at the VTK website http://public.kitware.com/VTK/ | ||
| Theo (theo) New member Username: theo Post Number: 1 Registered: 11-2005 |
I managed to export a vector by doing the following in the FlexPDE code : vtklin(XCOMP(elf),YCOMP(elf)) file ="electric_field_components.vtk" Then in VisIT you need to create an expression by choosing Controls>Expressions then select "Vector Mesh variable" and use {XCOMP_elf_,YCOMP_elf_} as your definition. I called mine "vectors". You should now be able to do a vector plot |