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To export a mesh or mesh/field data prior to filters to a text file choose
from a mesh or field annotation's Browser node context menu.A brief synopsis of the format is listed below. More details can be found in
The Visualization Toolkit
(https://www.kitware.com/products/books/vtkbook.html).
The format of the files is as follows:
# vtk DataFile Version 3.0 vtk output ASCII DATASET UNSTRUCTURED_GRID #After this header information, the nodes on which the data is #output are defined. The first line of the node section lists #the number of nodes and the data type: POINTS 200 float #The nodes definitions follow, and are simply consecutive #triplets of real numbers that are broken up into lines of #reasonable length, e.g.: -6.98297e-015 -4.87618e-029 -1 1 6.98297e-015 -1.72582e-014 1.37668e-014 9.61329e-029 1 -1 -6.98297e-015 1.02753e-014 0.707107 4.9377e-015 -0.707107 0.707107 4.9377e-015 0.707107 -0.707107 -4.9377e-015 0.707107 -0.707107 -4.9377e-015 -0.707107 0.382683 2.67227e-015 -0.92388 0.92388 6.45142e-015 -0.382683 0.92388 6.45142e-015 0.382683 0.382683 2.67227e-015 0.92388 #The nodes are implicitly numbered from 0. The element #definitions follow the node listing. The first line lists the #number of elements and the total number of integers in the element list. CELLS 764 3820 #Each element definition consists of an integer indicating the #number of nodes that define the element, followed by the node #number of each node, and there will be a single element #definition per line in the output file, e.g., 4 134 129 133 132 4 134 128 130 129 4 132 129 128 134 4 134 128 132 131 #After the element definition list, there is a list indicating #the type of each element following the heading. #The integer again indicates the number of elements. For #tetrahedrons, the cell type will always be 10. CELL_TYPES 764 10 10 #Field data has a header of the form: POINT_DATA 200 VECTORS vectors float #Followed by consecutive triplets that are arranged into rows #of reasonable length (similar to the node definitions), e.g., 0.0262314 0.00602391 -0.0465782 0.831676 -0.0290625 -0.0095951 0.0287873 0.0170979 -0.0514312 0.804472 0.0708395 0.00498523 0.437863 0.0665478 -0.399423 0.394295 -0.00972207 0.395047 0.407604 0.0211681 -0.394472 0.369445 0.012277 0.323042 0.165642 0.0401793 -0.307615
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