[Paraview] Help with reading vectors from XDMF

[Nikolaos Beratlis]

When I read the following file:

<?xml version="1.0" ?>
<!DOCTYPE Xdmf SYSTEM "Xdmf.dtd" []>
<Xdmf xmlns:xi="http://www.w3.org/2003/XInclude" Version="2.2">
  <Information Name="MetaData" Value="ID-23454"/>
  <Domain>
    <Grid Name="Eulerian Grid" GridType="Uniform">
      <Topology TopologyType="3DRectMesh" NumberOfElements="   1    2
 2"/>
      <Geometry GeometryType="VXVYVZ">
        <DataItem Dimensions="2" NumberType="Float" Format="XML">
         0.0 1.0
        </DataItem>
        <DataItem Dimensions="2" NumberType="Float" Format="XML">
         0.0 1.0
        </DataItem>
        <DataItem Dimensions="1" NumberType="Float" Format="XML">
         0.0
        </DataItem>
      </Geometry>
      <Attribute Name="Velocity" AttributeType="Vector" Center="Cell">
        <DataItem Dimensions="  1 2 2 3" Function="JOIN($0, $1, $2)"
ItemType="Function">
         <DataItem Dimensions="1 2 2" NumberType="Float" Format="XML">
         1.0 -1.0 1.0 -1.0
        </DataItem>
         <DataItem Dimensions="1 2 2" NumberType="Float" Format="XML">
         1.0 -1.0 1.0 -1.0
        </DataItem>
         <DataItem Dimensions="1 2 2" NumberType="Float" Format="XML">
         0.0 0.0 0.0 0.0
        </DataItem>
       </DataItem>
      </Attribute>
   </Grid>
  </Domain>
</Xdmf>

Paraview reads it wrong, the values of the velocity in the information
window range from -1e+299 to 1e299. Where is the mistake that causes
Paraview to read the wrong values?

Thank you,

Nikos
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