[Paraview] Can I generate a single file that contains data and filter settings?

Mon Jan 29 15:27:59 EST 2018

I think the python scripting with embedded data is worth a try. I'm not
familiar with the built-in vs other server modes so I'm not sure what kind
of restrictions that entails.  Probably my ultimate goal is to build a
reader plugin that will parse the data out of my application's native
format but generating a script seems like a decent interim solution.

Thanks,
Wyatt

On Mon, Jan 29, 2018 at 5:57 AM, Cory Quammen <cory.quammen at kitware.com>
wrote:

> Wyatt,
>
> ParaView provides extensive Python scriptability. One solution is to
> write out a Python script from your program. Within the Pythons
> script, you set up the data, set up filters and modify visualization
> settings just as you wish. Once it is loaded, you can continue to
> explore your data by creating new filters, changing visualization
> parameters, and so on.
>
> Creating example Python scripts is easy using the Trace functionality
> (Tools menu -> Start Trace) - you just interact with the UI and the
> equivalent Python operations will be written to the trace file. Use
> such a trace as a basis for what is written from your program.
>
> To save the data to the Python script and then load it is a different
> use case from what we typical support, but I think it is doable. It
> would just look a little ugly (and it would only work in built-in
> server mode). Basically, you could write out your data in a NumPy
> array within the script, as if you were entering the array information
> by hand, then provide that data to what's called a TrivialProducer
> source. This source would stand in place of a reader. There is a
> little bit of code required to do that that isn't super obvious -
> before sketching it out, would this approach work for your needs?
>
> Thanks,
> Cory
>
>
>
> On Sun, Jan 28, 2018 at 10:10 PM, Wyatt Spear <wspear at cs.uoregon.edu>
> wrote:
> > Thanks, I'll take a look at this. My use case is pretty severely
> > underutilizing ParaView's capabilities though. I'm rendering very large
> > multi-variable heat maps. So color mapped 2d points are all I need
> rendered,
> > (until I can figure out how to map glyph height to another variable).
> >
> > =Wyatt
> >
> >
> > On Sat, Jan 27, 2018 at 8:52 AM Samuel Key <samuelkey at bresnan.net>
> wrote:
> >>
> >> Wyatt--
> >>
> >> While ParaView can read CSV files and subsequently generate images, the
> >> CSV format for simulation results limits the functionality available to
> you
> >> in ParaView. My suggestion is that you write your simulation results in
> a
> >> format that contains geometry information, as well as, Point and Cell
> >> centered values like displacement, velocity, acceleration, temperature,
> >> concentrations, volume fractions, et cetera.
> >>
> >> The attached document is a good place to start. (This document is very
> >> concise and very complete, but the information is only written down
> once. As
> >> a result, the format information is sometimes not located where you need
> >> it.)
> >>
> >> If your simulations are concerned with the deformation of 3-D solids and
> >> structures, I can provide you with FORTRAN95 routines that you can use
> to
> >> write VTK-formatted simulation results.
> >>
> >> Once you can generate VTK-formatted datum sets, The File > Save State
> >> command will generate *.pvsm files that will let you "recreate" a
> previously
> >> constructed Browser Pipeline. (The PV *.pvsm reader gives you the
> >> opportunity to select a different datum set.)
> >>
> >> There is a small two-cell mesh file attached that might be helpful to
> you
> >> when constructing a VTK-formatted file writer in your application.
> >>
> >> --Sam
> >>
> >>
> >>
> >>
> >>
> >> On 1/27/2018 8:46 AM, Wyatt Spear wrote:
> >>
> >> Greetings,
> >>
> >> Currently I am using my own application to generate a simple CSV file
> >> which can be loaded up in ParaView. I then create the visualization I
> want
> >> with a few manual filter operations.
> >>
> >> What I would like is to generate a file, preferably still with a field
> for
> >> CSV-like raw data, that tells ParaView to load the data and then apply
> the
> >> filters I want, so the view I want is immediately available upon
> loading the
> >> file and the raw data is available if I want to try other filters.
> >>
> >> I've taken a look at vpt and pvd files saved from my intended view but
> I'm
> >> not seeing much correspondence between the CSV data I generate, the
> filters
> >> I apply and the data fields in there. I'm also pondering the save-state
> and
> >> trace/macro features of ParaView but I suspect those won't quite square
> with
> >> my aim of generating a file in an external application which includes
> data.
> >>
> >> Could someone point me toward a proper way to do this? If it comes down
> to
> >> plugin development I'm willing to take a look at that.
> >>
> >> Thanks,
> >> Wyatt Spear
> >>
> >>
> >> _______________________________________________
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> >>
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> >>
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> >>
> >> Visit other Kitware open-source projects at
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> >>
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> >>
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> >
> >
> > _______________________________________________
> > Powered by www.kitware.com
> >
> > Visit other Kitware open-source projects at
> > http://www.kitware.com/opensource/opensource.html
> >
> > Please keep messages on-topic and check the ParaView Wiki at:
> > http://paraview.org/Wiki/ParaView
> >
> > Search the list archives at: http://markmail.org/search/?q=ParaView
> >
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> >
>
>
>
> --
> Cory Quammen
> Staff R&D Engineer
> Kitware, Inc.
>
>
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