[lourencosm]

Hello,

How can I do a text annotation o a table cell as function of time?

I have this csv file:

vol
361.981
363.101
364.220
365.339
366.457
367.573
368.688
369.800
370.910
372.018

And I want to do an annotation like this: "vol= %f" % vol[t_index]

The thing is that 't_index' variable is not recognized in this file import pipe, only in .foam pipe.

Anyone knows how to do it?

Thank you,
Lourenço

[lourencosm]

I have found a way. It is not the simplest but it works.

1) Create vtk-data unstructured files (.vtu), each one for each time step. In this example, I have some flowrates:

 <VTKFile type="UnstructuredGrid" version="1.0" byte_order="LittleEndian" header_type="UInt64">
  <UnstructuredGrid>
    <Piece NumberOfPoints="1" NumberOfCells="0">
      <PointData>
        <DataArray type="Float64" Name="Time" format="ascii">
          0
        </DataArray>
        <DataArray type="Float64" Name="volWater" format="ascii">
          361.981
        </DataArray>
        <DataArray type="Float64" Name="frOutlet" format="ascii">
          0
        </DataArray>
        <DataArray type="Float64" Name="frInlet" format="ascii">
          0
        </DataArray>
      </PointData>
      <CellData>
      </CellData>
      <Points>
        <DataArray type="Float32" Name="Points" NumberOfComponents="3" format="ascii">
          0 0 0
        </DataArray>
      </Points>
      <Cells>
        <DataArray type="Int64" Name="connectivity" format="ascii">
          0
        </DataArray>
        <DataArray type="Int64" Name="offsets" format="ascii">
          1
        </DataArray>
        <DataArray type="UInt8" Name="types" format="ascii">
          1
        </DataArray>
      </Cells>
    </Piece>
  </UnstructuredGrid>
</VTKFile>

2) Create a paraview time-series file (.pvd) which links each vtu to a time-step,like this:

<VTKFile type="Collection" version="1.0" byte_order="LittleEndian" header_type="UInt64">
  <Collection>
    <DataSet timestep="0"  file="domainMassFlow_000.vtu"/>
    <DataSet timestep="0.1"  file="domainMassFlow_001.vtu"/>
    <DataSet timestep="0.2"  file="domainMassFlow_002.vtu"/>
    <DataSet timestep="0.3"  file="domainMassFlow_003.vtu"/>

3) load the .pvd file into Paraview pipe

4) Use a python annotation to extract the information. e.g.:

'FR Inlet: %.2f m3/s/s' % input.PointData['frInlet'][0]

It works!

[lourencosm]

Hello wildcat,

Thank you for your attention.

What I really would like is to do a text annotation from a table where the first column is time and the second is a variable.

This table could come from csv text file.

I've manage to find a way with a pvd file and a vtu file for each table row. It requires some extra work but it actually works!

Do you (or anyone) has an ideia how to make it in a simple way?

Lourenço

[ Moderator note: Moved post from http://www.cfd-online.com/Forums/ope...ylinder-2.html ]

[wyldckat]

Quick answer: Have a look at this post I wrote a few minutes ago: http://www.cfd-online.com/Forums/ope...tml#post543810 - post #11