# General

I see that it's been requested for quite a while! It'd be marvelous if you could just obtain the difference, union or intersection of two shapes with a click of a button... Just saying....

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When Pipeline is very large, it would be useful to filter the display in Pipeline Browser.
For example :
- ability to display only active filters of the selected RenderView/Layout
- search bar

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3. ## Add the ability to create countour lines on velocity magnitude

In now time paraview support only creating contour lines on pressure p.
If I want to create the countour line on velocity, which is not allowed by countour, I need to use 'Calculator' field with command "mag(V)", then I've got my Result, and only then I can use this Result in the countour filter to make the lines on my velocity magnitude

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4. ## Right now quantities are associated to nodes or elements, but in electromagnetics some quantities are naturally associated to faces (fluxes)

Right now quantities are associated to nodes or elements, but in electromagnetics some quantities are naturally associated to faces (fluxes) or edges (magnetomotive forces) and special finite elements (nedelec / raviart-thomas) can be used to interpolate such quantities. Is support for such entities planned? If not how difficult would it be to implement it?

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5. ## Integrate Julia

I think that Julia is the next best scientific programming language. CFD, FEM, Magnetic, and other solvers, as well as filters could be written right inside Paraview, and executed with decent performance. The same code can be developed as stand-alone functions.

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6. ## Show the Multi-block list or the Block Indices list by alphabetical order

Multi-block inspector shows the blocks by index and not by alphabetical order.
Block indices list (when you execute Extract block filter) shows the same list.
It is easier to select blocks in a alphabetical list (or to have the possibility to change order of this list).

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7. ## Export Dynamic Scenes

Add capabilities to the VRML, WebGL, X3D etc. writers to enable the export of animated scenes.

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8. ## Capability to read/write MRC files

MRC is a file format for imaging data in 3D electron microscopy, where the result of the technique is a three-dimensional grid of voxels each with a value corresponding to scattering potential. It was developed by the MRC (Medical Research Council) Laboratory of Molecular Biology. This file format is supported by many software suites for molecular biology that support volumetric data, such as IMOD and Chimera. The file format is described in http://en.wikipedia.org/wiki/MRC_(file_format), see also http://www2.mrc-lmb.cam.ac.uk/image2000.html and http://bio3d.colorado.edu/imod/doc/mrc_format.txt.

There is an ITK module that contains classes for reading and writing image files in the MRC file format, see …

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9. ## Drag and Drop for states and plugins

Paraview can handle drag and drop for data files (great feature) but not for state files.
Also make drag and drop working for plugins. (copy the plugin file to some safe place .config/... and check the Auto Load). This can make using plugins much easier for new people.

And have a central place (wiki maybe) with a list of the community plugins (compiled or in source).

Great job and Merry Christmas to all.

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10. ## Support relative frequency in histogram plots

Would it be possible to plot the relative frequency of the histogram data as well as the bin count data? Thanks!

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11. ## Represent filled volume

Adding functionality to represent a 3D object filled.
After using slice for example only the contour line is showed of a sphere. The representation mode volume instead of surface would be nice.

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12. ## check parallel execution under Win 7

Parallel execution seems not to be working under Windows 7 64 bit

Only one core used even if "enable multicore for data processing" is ticked

Thanks

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13. ## Reimplement the render-node-port option

I have in vain looked for th e (documented) render-node-port option in recent PV releases (4.1, 4.2) and cannot find it. Presently it seems that data- and render-server connection is mandatory random. This makes it more or less impossible to connect DS on cluster nodes to RS on e.g. a workstation. An otherwise quite efficient solution when reading parallel OpenFOAM data.

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14. ## Add Custom View toolbar shortcuts

You know, like the +/- X, Y, Z shortcuts...

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15. ## Volume fraction "histogram"

A filter to divide a dataset into different ranges for a particular variable that has for output each range in the X axis, and the volume that corresponds to each range in the Y axis.

For example, I am doing mixing tank CFD simulations, and I am interested in understanding how much of the volume of the tank is at different ranges of velocities. The way I do it now is to manually create thresholds for each range, and then integrate variables.

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16. ## Export to 3D PDF

It would be great to be able to save a session to a 3D pdf so that any model can be viewed by almost anyone without the need for any other viewers.

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17. ## Global Z scale option

Allow a global z scale like Google Earth. Currently I have to scale each of dozens of input data individually. This is an important feature for terrain visualizations.

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18. ## obj (with texture) can be used...

I would like to know if it's possible to used obj format with the textured file, in order to create "fly in" or "fly through" animation of the model. Actually obj file could be used but the textured file is not used

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19. ## Enable vector export of axis labels specified in MathText form in line chart views

Currently (as of version 4.1), when exporting line chart views in vector form, the mathtext axis labels get output in plain form such as $\gamma$ instead of the Greek gamma symbol. Mathtext apperaing elsewhere, such as legends, gets output correctly. Only the axes labels do not get output correctly. I have tested it with both "renedr text as paths" checked and unchecked and the error was not affected by it.

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20. ## SEG-Y seismic data reader (2D and 3D)

It would be useful to have a reader for SEG-Y seismic data, with the option to translate between big-endian and little-endian forms (UNIX to PC). This may be a complicated task since most data will be in two-way time (unless depth converted). However , this should not be a problem given that the freeware GMT software can read the data and convert to a useable format. Something to consider.

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