Thank you for your quick answer, however i am afraid i wasn't explicit in my questions:
For the first point, yes, i knew that, but when i create 3d text, it is always in the same place,i can't put words in each face of my cube for example, You can use the transform filter to move the 3D text around in space. For the second point, i wasn't talking about applying text with Paraview but directly with the Vtk programm i wrote ( i think it could be more simple for me than if i always use the 3d text program) It looks like by program you mean data file. 3D text is really just a bunch of polygons. You can save those polygons out in a .vtk file. And is the time annotation only linear? (Can't i use for example time annotation with logarythm?) The time annotation simply tells you the time. The time is what it is. If you have time steps in your data and those time steps happen to be spaced logarithmically, then ParaView will visit those logarithmic steps. If there are no steps, then yes ParaView will take even (linear) steps. There is no special mode to logarithmically space the time steps. You could make a filter to do that, though. -Ken
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