Joel2: Created page with "=Example Input Files & VisTrails Pipelines= This is an example of an input data file that we have successfully used to generate a useful interactive rendering within VisTrails. The file illustrates the POLYDATA dataset format in the context of VTK's ''XML File Format.'' To aid in implementation, we present the full ascii dataset, two resulting rendered images, and a screen shot of the VisTrails pipeline that was used to generate..."

2024-07-09T23:17:48Z

Created page with "=Example Input Files & VisTrails Pipelines=  This is an example of an input data file that we have successfully used to generate a useful interactive rendering within VisTrails. The file illustrates the POLYDATA dataset format in the context of VTK's ''XML File Format.'' To aid in implementation, we present the full ascii dataset, two resulting rendered images, and a screen shot of the VisTrails pipeline that was used to generate..."

New page

=Example Input Files & VisTrails Pipelines=


This is an example of an input data file that we have successfully used to generate a useful interactive rendering within VisTrails. The file illustrates the POLYDATA dataset format in the context of VTK's ''XML File Format.'' To aid in implementation, we present the full ascii dataset, two resulting rendered images, and a screen shot of the VisTrails pipeline that was used to generate the image. Note that the image captioned "Point Data" was generated, by default, while the image captioned "Cell Data" was generated after activating the ''SetScalarModeToUseCellData'' method within the '''vtkPolyDataMapper''' module. Note, further, that the vertical "warping" of the configuration can be excluded — with the result being the rendering of a flat plane — by either:
* Removing the '''vtkWarpScalar''' module from the VisTrails pipeline and connecting the '''vtkXMLPolyDataReader''' module directly to the '''vtkPolyDataMapper''' module; or
* Changing the floating-point value associated with the ''SetScaleFactor'' method inside the '''vtkWarpScalar''' method from 2.0 to 0.0.

The lessons that we learned as we initially constructed this "Warped Quilt" example are detailed in the [[vtk/SimpleCubeTutorial#WarpScala|"WarpScalar" subsection of our accompanying tutorial]]. A list of other example input data files [[vtk/SimpleCubeTutorial#Other_Example_Input_Files_and_VisTrails_Pipelines|is provided near the end]] of the same tutorial.

==XML (PolyData) Warped Quilt Example==

<div align="left">
<pre>
<?xml version="1.0"?>
<VTKFile type="PolyData" version="0.1" byte_order="LittleEndian">
<PolyData>
<Piece NumberOfPoints="36" NumberOfPolys="25">
<CellData Scalars="cell_scalars" Normals="cell_normals">
<DataArray type="Float32" Name="cell_scalars" format="ascii">
0.2 0.2 0.2 0.2 0.2
0.2 0.4 0.6 0.4 0.2
0.2 0.6 0.8 0.6 0.2
0.2 0.4 0.6 0.4 0.2
0.2 0.2 0.2 0.2 0.2
</DataArray>
<DataArray type="Float32" Name="cell_normals" NumberOfComponents="3" format="ascii">
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
</DataArray>
</CellData>
<PointData Scalars="colorful" Normals="magnify">
<DataArray type="Float32" Name="colorful" format="ascii">
0.2 0.2 0.2 0.2 0.2 0.2
0.2 0.4 0.6 0.6 0.4 0.2
0.2 0.6 0.8 0.8 0.6 0.2
0.2 0.6 0.8 0.8 0.6 0.2
0.2 0.4 0.6 0.6 0.4 0.2
0.2 0.2 0.2 0.2 0.2 0.2
</DataArray>
<DataArray type="Float32" Name="magnify" NumberOfComponents="3" format="ascii">
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1
</DataArray>
</PointData>
<Points>
<DataArray type="Float32" NumberOfComponents="3" format="ascii">
0 0 0 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0
0 1 0 1 1 0 2 1 0 3 1 0 4 1 0 5 1 0
0 2 0 1 2 0 2 2 0 3 2 0 4 2 0 5 2 0
0 3 0 1 3 0 2 3 0 3 3 0 4 3 0 5 3 0
0 4 0 1 4 0 2 4 0 3 4 0 4 4 0 5 4 0
0 5 0 1 5 0 2 5 0 3 5 0 4 5 0 5 5 0
</DataArray>
</Points>
<Polys>
<DataArray type="Int32" Name="connectivity" format="ascii">
0 1 7 6 1 2 8 7 2 3 9 8 3 4 10 9 4 5 11 10
6 7 13 12 7 8 14 13 8 9 15 14 9 10 16 15 10 11 17 16
12 13 19 18 13 14 20 19 14 15 21 20 15 16 22 21 16 17 23 22
18 19 25 24 19 20 26 25 20 21 27 26 21 22 28 27 22 23 29 28
24 25 31 30 25 26 32 31 26 27 33 32 27 28 34 33 28 29 35 34
</DataArray>
<DataArray type="Int32" Name="offsets" format="ascii">
4 8 12 16 20 24 28 32 36 40
44 48 52 56 60 64 68 72 76 80
84 88 92 96 100
</DataArray>
</Polys>
</Piece>
</PolyData>
</VTKFile>
</pre>
</div>

<div align="center">
<table border="2" align="center">
<tr>
<td align="center" rowspan="2">
[[Image:WarpScalarPipeline.png|right|thumb|500px|Pipeline03]]
</td>
<td align="center">
[[Image:WarpScalarImage.png|right|thumb|200px|Warp (Point Data) Image]]
</td>
</tr>
<tr>
<td align="center">
[[Image:WarpScalarCellDataImage.png|right|thumb|200px|Warp (Cell Data) Image]]
</td>
</tr>
</table>
</div>

=Related Discussions=
* [[vtk/SimpleCubeTutorial#Other_Example_Input_Files_and_VisTrails_Pipelines|Other examples]] of properly formatted input data files
* [[vtk/SimpleCubeTutorial#Simple_Cube_Tutorial|Simple Cube Tutorial]]
** [[vtk/SimpleCubeTutorial/CubeDetails#Cube_Definition_Details|Specifying Points (Vertices) and Polygons]] of a cube
** [[vtk/ColorLookupTablea#Color_Lookup_Tables|Defining Color Lookup Tables]]

Vtk/Examples/XMLwarpedQuilt - Revision history