xml - XDMF - 使用 Hyperslab 从矢量场中提取分量

Question

我正在尝试加载存储在文件中的矢量场的单个组件uvw_000001.bin。

我正在使用下面的 XDMF 文件，它将字段值加载到变量中q就好了，即我可以在 Paraview 中查看它的组件。

u我尝试提取矢量场的第一个分量的第二个变量在 Paraview 中不可用。

我究竟做错了什么？

<?xml version="1.0" ?>
<!DOCTYPE Xdmf SYSTEM "Xdmf.dtd" []>

<Xdmf Version="3.0">

  <Domain>

    <Grid Name="staggered_east" GridType="Uniform">

      <Topology TopologyType="3DRectMesh" NumberOfElements="34 34 34"/>

      <Geometry GeometryType="VXVYVZ">
        <DataItem Dimensions="34" NumberType="Float" Precision="4" Format="XML">   
          0.0000000000000000 0.10000000000000001 0.20000000000000001 0.30000000000000004 0.40000000000000002 0.50000000000000000 0.60000000000000020 0.70000000000000007 0.80000000000000004 0.90000000000000002 1.0000000000000000 1.1000000000000001 1.2000000000000002 1.3000000000000000 1.4000000000000001 1.5000000000000000 1.6000000000000001 1.7000000000000002 1.8000000000000000 1.9000000000000001 2.0000000000000000 2.1000000000000001 2.2000000000000002 2.3000000000000003 2.4000000000000004       2.5000000000000000 2.6000000000000001 2.7000000000000002 2.8000000000000003 2.9000000000000004 3.0000000000000000 3.1000000000000001 3.2000000000000002 3.3000000000000003
        </DataItem>
        <DataItem Dimensions="34" NumberType="Float" Precision="4" Format="XML">   
          -5.0000000000000003E-002 5.0000000000000003E-002 0.15000000000000002 0.25000000000000000 0.35000000000000003 0.45000000000000001 0.55000000000000004 0.65000000000000013 0.75000000000000000 0.85000000000000009 0.94999999999999996 1.0500000000000000 1.1500000000000001 1.2500000000000000 1.3500000000000001 1.4500000000000002 1.5500000000000000 1.6500000000000001 1.7500000000000000 1.8500000000000001 1.9500000000000002 2.0499999999999998 2.1500000000000004 2.2500000000000000 2.3500000000000005      2.4500000000000002 2.5499999999999998 2.6500000000000004 2.7500000000000000 2.8500000000000005 2.9500000000000002 3.0499999999999998 3.1500000000000004 3.2500000000000000 
        </DataItem>
        <DataItem Dimensions="34" NumberType="Float" Precision="4" Format="XML">   
          -5.0000000000000003E-002 5.0000000000000003E-002 0.15000000000000002 0.25000000000000000 0.35000000000000003 0.45000000000000001 0.55000000000000004 0.65000000000000013 0.75000000000000000 0.85000000000000009 0.94999999999999996 1.0500000000000000 1.1500000000000001 1.2500000000000000 1.3500000000000001 1.4500000000000002 1.5500000000000000 1.6500000000000001 1.7500000000000000 1.8500000000000001 1.9500000000000002 2.0499999999999998 2.1500000000000004 2.2500000000000000 2.3500000000000005      2.4500000000000002 2.5499999999999998 2.6500000000000004 2.7500000000000000 2.8500000000000005 2.9500000000000002 3.0499999999999998 3.1500000000000004 3.2500000000000000 
        </DataItem>
      </Geometry>


      <Attribute Name="q" AttributeType="Scalar" Center="Node">

        <DataItem 
          ItemType="Uniform"
          Name="uvw_s"
          Format="Binary"
          Dimensions="34 34 34 3"
          DataType="Float" Precision="8" Endian="Big" Seek="8"
          >
          uvw_000001.bin
        </DataItem>

      </Attribute>


      <Attribute Name="u" AttributeType="Scalar" Center="Node">

        <DataItem 
          ItemType="HyperSlab"
          Dimensions="34 34 34"
          Type="HyperSlab">

          <DataItem
            Dimensions="3 4"
            Format="XML">
            0   0  0  0
            1   1  1  1
            34 34 34  1
          </DataItem>

          <DataItem 
            ItemType="Uniform"
            Name="uvw"
            Format="Binary"
            Dimensions="34 34 34 3"
            DataType="Float" Precision="8" Endian="Big" Seek="8"
            >
            uvw_000001.bin
          </DataItem>

        </DataItem>

      </Attribute>


    </Grid>

  </Domain>

</Xdmf>

更新 我现在意识到，当使用 Paraview 的 xdmf 阅读器而不是 xdmf3 时，代码实际上可以工作。后者是默认设置。

有没有办法用 xdmf3 阅读器实现相同的结果？

标签： xmlparaview