ParaView is a rather complicated 3d scientific visualization software. It's difficult for beginners to understand the basics from a book.
I suggest adding some basic short video tutorials to help people understand the key components of the software and include more examples (maybe the most common questions from the support forum).

The current "Annotate Attribute data" filter in Paraview does not have format specification options. As an example, when annotating say (0,0,0) element of a cell data array "U" with a value of "0.123456789" shows " U = 0.123456789" on the render view. It may be helpful to have a feature where one can specify the format (say "U = %5.2f") to display only "U = 0.12" on the screen instead of the 9 significant digits from the original data. Thanks!

Current no support for this

hello, actually, this is an issue for a long time. I am not sure if others has encountered it. When I try to visualize the deformation field exported from ITK, it usually crashes. The output message is that: vtkFloatArray: unable to allocate 319291392 elementes of size 4 bites; If someone can provide some good suggestion for the parameter settings, thank you a lot.

Pressing the alt key causes the menu items show an underline under their short key letters (if any). Although this is a frequently used item, Delete All menu item does not have a short key. Adding this will be helpful.

Spatial data is large dynamic and amenable for viewing sadly all we have are some foss gis clients which while have a GIS flavour don't do full justice to visualisation part

ParaView comes with two built in color Palettes: Screen and Print. It would be nice if a user was able to define his/her own color palette.

Generally liked to have the possibility of using all different filters of ParaView inside ParaViewWeb.
As PlotOverLine needs multiview, it would be nice to add this functionality to the frame of ParaViewWeb too.

I sometimes have very complicated keyframe lists (a few hundred Time-Value pairs). It would be very useful to be able to Save and Load these to some sort of simple text file that could be created/edited outside Paraview

Tick Lines' width and length, Annotations' position, Bar Position with GUI input, ...etc.

Extend ParaView's FileSeriesReaderProxy to step through files named by date & time rather than by integers in a filename.

This documentation explains how to use FileSeriesReaderProxy to animte over files named foo1.xyz, foo2.xyz, ... fooN.xyz.
http://paraview.org/Wiki/AnimatinglegacyVTKfileseries

However, this doesn't work with filesnamed by date and time (Year-Month-Day-Hour-Minute-Second):
foo1995-03-21T00-00-00.xyz
foo1995-03-21T01-00-00.xyz
...
foo1995-03-21T23-00-00.xyz
foo1995-03-22T00-00-00.xyz
...

Inspired from discussions on the mailing list http://www.paraview.org/pipermail/paraview/2010-December/019663.html

When you switch off a range of time steps, the temporal statistics no longer works. I have to manually alter the .xmf file so as to only average the time interval I want. Is there a way I can do this without the manual editing of the files? ie is there a way to pick a range of time intervals or not loading a range of time intervals.

All contours on ParaView are always shaded, but sometimes the shaded contours are not suitable for understanding the values indicated by colors. I hope the vivid, flat, non-photorealistic shading model like Fluent or other post processors are implemented.

I am trying to set a .jpeg image as my background before loading in VTK data. Does anyone know how to do this?