[Paraview] ParaView VTK Legacy File Questions

Tue Feb 5 10:58:17 EST 2013

Comments within my data file. I want to be able to describe the sections in
detail such that people within my research group understand the purpose of
the inputted data. I suppose then the XML format will be necessary. Thank
you again for your help, it is much appreciated.

Best,
Dan
--
Daniel Levitus
University of Illinois Champaign-Urbana
B.S Civil Engineering 2013
American Society of Civil Engineers | Treasurer
daniel.levitus at gmail.com | 847-220-2503

On Tue, Feb 5, 2013 at 9:54 AM, Michael Jackson <mike.jackson at bluequartz.net
> wrote:

> When you say "comments" are you just wanting some comments in your data
> file? or do you want these comments to be rendered/available inside
> paraview? If the first is what you want (just a way to demark the sections
> of data) then the XML based vtk files are standard XML so you can use the
> XML style comments:
>
> <!-- XML Comment  -->
>
> If that does NOT work then Vtk/ParaView is not implementing a standard XML
> reader.
> --
> Mike Jackson <www.bluequartz.net>
>
> On Feb 5, 2013, at 10:49 AM, Daniel Levitus wrote:
>
> > The vector data seemed to work fine. I thought I tried that before but
> must have had an error somewhere. As for the comments, does the XML VTK
> format allow comments? Or is there another file type that allows comments
> that is a similar format as the VTK Legacy File? Thank you Mike for your
> help.
> >
> > Best,
> > Dan Levitus
> >
> > --
> > Daniel Levitus
> > University of Illinois Champaign-Urbana
> > B.S Civil Engineering 2013
> > American Society of Civil Engineers | Treasurer
> > daniel.levitus at gmail.com | 847-220-2503
> >
> >
> > On Tue, Feb 5, 2013 at 9:26 AM, Michael Jackson <
> mike.jackson at bluequartz.net> wrote:
> > The only comment in a vtk legacy file is allowed on the second line of
> the file and must be 255 chars or less.
> >
> > As for the vectors, if you are creating POINT_DATA then you MUST include
> data for each of the points, whether or not you actually have any data
> there to represent.
> >
> >  You may have to write 3 sets of POINT_DATA, one for each of Tangent,
> Binormal and Normal. You might be able to put a (0,0,0) as the vector to
> basically not have it show up but I am not sure if that would work or not.
> >
> > Try this:
> >
> > # vtk DataFile Version 1.0
> > 3D Crack Modeling
> > ASCII
> > DATASET POLYDATA
> >
> > POINTS 4 float
> > 0.0 0.0 5.0
> > 1.0 0.0 5.0
> > 0.0 1.0 5.0
> > 1.0 1.0 5.0
> >
> > POLYGONS 2 8
> > 3 0 1 2
> > 3 1 3 2
> >
> > LINES 2 6
> > 2 0 1
> > 2 2 3
> >
> > POINT_DATA 4
> > SCALARS node_numbering int 1
> > LOOKUP_TABLE default
> > 0
> > 2
> > 4
> > 6
> >
> > VECTORS Binormal float
> > 0 1 0
> > 0 1 0
> > 0 0 0
> > 0 1 0
> >
> > VECTORS Tangent float
> > 0 0 1
> > 0 0 1
> > 0 0 0
> > 0 0 1
> >
> > VECTORS Normal float
> > 1 0 0
> > 1 0 0
> > 0 0 0
> > 1 0 0
> >
> >
> > CELL_DATA 4
> > SCALARS cell_numbering int 1
> > LOOKUP_TABLE default
> > -1
> > -1
> > 0
> > 2
> >
> >
> > Then use the Glyph Filter to display the vectors as arrows.
> > ___________________________________________________________
> > Mike Jackson                    Principal Software Engineer
> > BlueQuartz Software                            Dayton, Ohio
> > mike.jackson at bluequartz.net              www.bluequartz.net
> >
> > On Feb 5, 2013, at 10:05 AM, Daniel Levitus wrote:
> >
> > > I realized that my past email was not detailed enough as I was in a
> rush to get it out, but attached are 3 files that should help explain what
> I am trying to convey. The image named "No vectors" is what I currently
> have modeled in ParaView from the data file (also included). What I am
> hoping to have, is in the data file, a place to enter in the data for 3
> different vectors at as many points as I want and then be able to apply a
> filter via ParaView so that the end result would look like the second image
> name BNT.
> > >
> > > Hopefully this makes more sense.Thank you.
> > >
> > > Dan Levitus
> > > --
> > > Daniel Levitus
> > > University of Illinois Champaign-Urbana
> > > B.S Civil Engineering 2013
> > > American Society of Civil Engineers | Treasurer
> > > daniel.levitus at gmail.com | 847-220-2503
> > >
> > >
> > > On Mon, Feb 4, 2013 at 1:45 PM, Daniel Levitus <
> daniel.levitus at gmail.com> wrote:
> > > I have two questions regarding the VTK Legacy file format.
> > >
> > > The first being how can one write comments in the file without
> ParaView returning an error? I have tried #, %, //, /* and none have seemed
> to work. I have searched online as well and cannot seem to find something
> that suggests other methods.
> > >
> > > The second and bit more in depth question is: How can I apply three
> different sets of vector data to the same point in the Legacy format? I
> have a simple triangular grid and at certain points I want to be able to
> declare Tangent, Binormal, and Normal vectors for those points.
> > >
> > > If more clarification is required please let me know
> > >
> > > Best,
> > > Dan Levitus
> > > --
> > > Daniel Levitus
> > > University of Illinois Champaign-Urbana
> > > B.S Civil Engineering 2013
> > > American Society of Civil Engineers | Treasurer
> > > daniel.levitus at gmail.com | 847-220-2503
> > >
> > > <BNT.png><No vectors.PNG><Step
> 0.vtk>_______________________________________________
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