in4086p Frequently Asked Questions (FAQ)

Why is my rendering so slow?

Did you remember to deactivate Immediate Mode Rendering as explained on the main course page?

Another option is that your data may be too large. Try using the Extract Subset filter to resample your data before doing any processing. Especially when creating animations, it is useful to resample to a low resolution. You can always change this back when you render your final movie.

Why does my data keep blurring when I rotate the camera?

This is ParaView's level of detail rendering in action. You can tweak this in Edit > Settings > Render View, or turn it off completely. Turning LOD off might make things slow, so experiment to see which setting works best for you.

What does option X do?

Just try it and find out! Also remember that ParaView has a help system. Just hit F1 (or click Help > Help) to get more information on whatever you're currently working with.

I can't find option X! / Why does my ParaView look different from the screenshots?

The lab computers have two different versions of ParaView. You probably started the wrong version. For this course we use the (very recent) 3.2.1 version. You can start this version by typing /usr/src/ParaView-build-3.2.1/bin/paraview & at a command prompt.

ParaView won't show my data anymore!

First check if the representation is marked as visible (check the Display tab in the Object Inspector, or use the little eye icon in the Pipeline Browser). It may also happen that your camera is pointing somewhere else. Make sure the right view is selected (note the red border) and click the Reset Camera button . Alternatively, use the view direction buttons next to it to reposition the camera.

If none of this helps, you may have encountered a bug in ParaView. Try closing (X button) and recreating your view (split a view if necessary, then click the 3D view button in the Create View menu) and re-enable visibility for the representation(s).