为.vtu文件添加属性的格式

huangapple
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英文:

Format for Adding an attribute to .vtu file

问题

我尝试向vtu文件添加一个属性，该属性是一个网格度量，对于网格中的每个三角形都是一个单一值，vtu文件包含以下标头的网格信息：

  1. <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
  2. 	<UnstructuredGrid>
  3. 		<Piece NumberOfPoints="468" NumberOfCells="862">
  4.     <Points>
  5.     <DataArray NumberOfComponents="3" type="Float64"  Format="binary">
  6.     *插入节点坐标*
  7.     </DataArray>
  8.     </Points>
  9.     <Cells>
  10.     <DataArray type="Int32" Name="connectivity" Format="binary">
  11.     *插入连接信息*
  12.     </DataArray>
  13.     <DataArray type="Int32" Name="offsets" Format="binary">
  14.     *插入偏移数据*
  15.     </DataArray>
  16.     <DataArray type="Int32" Name="types" Format="binary">
  17.     </DataArray>
  18.      ****这是我插入我的数组的地方
  19.     <DataArray type="Float64" Name="meshmetric" Format="binary">
  20.     *插入网格度量值*
  21.     </DataArray>
  22.     </Cells>
  23. 		</Piece>
  24. 	</UnstructuredGrid>
  25. </VTKFile>

我在后面添加了我的网格度量数组，但当我在Paraview中加载文件时它不会出现，可能是因为我没有正确放置数组，也可能是因为我不知道如何在Paraview中查看它，或者我需要更改/添加数组中的网格信息<offset>或<type>。

我没有使用Python。

英文:

I am trying to add an attribute to a vtu file, the attribute being a mesh metric which is a single value for each triangle in my mesh, the vtu file containing mesh information with the following headers:

  1. &lt;VTKFile type=&quot;UnstructuredGrid&quot; version=&quot;0.1&quot; byte_order=&quot;LittleEndian&quot;&gt;
  2. 	&lt;UnstructuredGrid&gt;
  3. 		&lt;Piece NumberOfPoints=&quot;468&quot; NumberOfCells=&quot;862&quot;&gt;
  4.     &lt;Points&gt;
  5.     &lt;DataArray NumberOfComponents=&quot;3&quot; type=&quot;Float64&quot;  Format=&quot;binary&quot;&gt;
  6.     *insert nodes coordinates*
  7.     &lt;/DataArray&gt;
  8.     &lt;/Points&gt;
  9.     &lt;Cells&gt;
  10.     &lt;DataArray type=&quot;Int32&quot; Name=&quot;connectivity&quot; Format=&quot;binary&quot;&gt;
  11.     *insert connectivity info*
  12.     &lt;/DataArray&gt;
  13.     &lt;DataArray type=&quot;Int32&quot; Name=&quot;offsets&quot; Format=&quot;binary&quot;&gt;
  14.     * insert offset data*
  15.     &lt;/DataArray&gt;
  16.     &lt;DataArray type=&quot;Int32&quot; Name=&quot;types&quot; Format=&quot;binary&quot;&gt;
  17.     &lt;/DataArray&gt;
  18.      ****This is where I inserted my array
  19.     &lt;DataArray type=&quot;Float64&quot; Name=&quot;meshmetric&quot; Format=&quot;binary&quot;&gt;
  20.     *insert mesh metric values*
  21.     &lt;/DataArray&gt;
  22.     &lt;/Cells&gt;
  23. 		&lt;/Piece&gt;
  24. 	&lt;/UnstructuredGrid&gt;
  25. &lt;/VTKFile&gt;

I added my mesh metric array after <types> but it doesn't appear when I load the file to paraview, it could be I didn't place the array correctly b) I didn't know how to view it on paraview. c) I need to change/ add an information to the mesh information in the array &lt;offset&gt; or &lt;type&gt;
I am not using python

答案1

得分: 1

Your meshmetric <DataArray> tag is not inside the correct tag.

<Cells> is here to define the cells themselves. The associated data should be under a <CellData> tag, itself being a sibling of <Cells>. So

  1. <Cells> ... </Cells>
  2. <CellData>
  3.     <DataArray name='meshmetric'>
  4.      ...
  5.     </DataArray>
  6. </CellData>

Some doc is here

英文:

Your meshmetric &lt;DataArray&gt; tag is not inside the correct tag.

&lt;Cells&gt; is here to define the cells themselves. The associated data should be under a &lt;CellData&gt; tag, itself being a sibling of &lt;Cells&gt;. So

  1. &lt;Cells&gt; ... &lt;/Cells&gt;
  2. &lt;CellData&gt;
  3.     &lt;DataArray name=&#39;meshmetric&#39;&gt;
  4.      ...
  5.     &lt;/DataArray&gt;
  6. &lt;/CellData&gt;

Some doc is here

huangapple
  • 本文由 发表于 2023年2月19日 15:09:01
  • 转载请务必保留本文链接：https://go.coder-hub.com/75498530.html
  • mesh
  • paraview
  • vtk
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