[Paraview] Mixed Formulation FEM in Paraview
I would like to ask if it is possible to display scalar, vector or tensor values at distinct nodes in a finite element mesh. To make things clearer, there exist finite element formulations where not all nodes have the same number of degrees of freedom. Consider the case of a 20 node hexahedral element. In a so called u-p formulation all 20 nodes have 3 displacement degrees of freedom (one for each x, y, z axis) but only the 8 corner nodes have pressure degrees of freedom. For this particular case, i know how to display the vector of displacements for all the nodes. But since only the corner nodes of each hexahedron have pressure degrees of freedom how can I instruct paraview to 'see' that only these nodes have the pressure scalar values and make the correct color interpolation? Thank you very much. Theofilos Manitaras ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
Re: [Paraview] Mixed Formulation FEM in Paraview
Hi, Currently ParaView assumes that all field variables have the same interpolation/shape functions for point data. You would have to either throw out the higher order interpolation/shape functions or compute the dofs for them for the lower order field approximation. Regards, Andy On Tue, Dec 9, 2014 at 9:55 AM, Teo Ioannis teoj...@gmail.com wrote: I would like to ask if it is possible to display scalar, vector or tensor values at distinct nodes in a finite element mesh. To make things clearer, there exist finite element formulations where not all nodes have the same number of degrees of freedom. Consider the case of a 20 node hexahedral element. In a so called u-p formulation all 20 nodes have 3 displacement degrees of freedom (one for each x, y, z axis) but only the 8 corner nodes have pressure degrees of freedom. For this particular case, i know how to display the vector of displacements for all the nodes. But since only the corner nodes of each hexahedron have pressure degrees of freedom how can I instruct paraview to 'see' that only these nodes have the pressure scalar values and make the correct color interpolation? Thank you very much. Theofilos Manitaras ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
[Paraview] RGB color coding
Dear ParaView people, I'm trying to make a periodic but non-symmetric color map. I tried the attached xml definition, but it seems that between red and magenta, ParaView interpolates in the other direction, see attached png screenshot. Is that the expected behavior? Is there a way to interpolate differently? Thanks! Martin ColorMap name=test space=test Point x=0.00 o=1 r=0 g=0 b=1/ Point x=0.17 o=1 r=0 g=1 b=1/ Point x=0.33 o=1 r=0 g=1 b=0/ Point x=0.50 o=1 r=1 g=1 b=0/ Point x=0.67 o=1 r=1 g=0 b=0/ Point x=0.83 o=1 r=1 g=0 b=1/ Point x=1.00 o=1 r=0 g=0 b=1/ /ColorMap___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
Re: [Paraview] [EXTERNAL] Re: Streaklines
I am also trying to figure out the streakline filter. Still don't understand how to make it function :) On 5 December 2014 at 14:10, Scott, W Alan wasc...@sandia.gov wrote: Andy, Mind giving me an example of how to run this streakline filter? I have never used it before. Thanks! Alan *From:* ParaView [mailto:paraview-boun...@paraview.org] *On Behalf Of *Andy Bauer *Sent:* Friday, December 05, 2014 12:06 PM *To:* Pradeep Jha *Cc:* paraview@paraview.org *Subject:* [EXTERNAL] Re: [Paraview] Streaklines ParaView does indeed have a StreakLine filter. On Fri, Dec 5, 2014 at 12:30 PM, Pradeep Jha pradeep.kumar@gmail.com wrote: I have a unsteady 2D contour plot of a flow past a cylinder. Is it possible to plot the streaklines of a flow using Paraview? My solution file only contains the following data: U,V,W velocity and Pressure. ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
[Paraview] Starting a batch animation in the middle -- fail
Hello, I have been successfully using pvbatch to generate animated image sequences of state files created with the ParaView GUI. However, I am not able to begin an animation in the middle -- which I desperately need to do in order to parallelize my renderings. I mentioned this before in July (and again in person at SC'14), but haven't yet reached a solution. The documentation for the WriteAnimation() method in simple.py indicates that this is possible, but fails in two ways. 1) The WriteAnimation() method doesn't actually implement the two most important parameters needed: SetStartFileCount() and SetPlaybackTimeWindow(). 2) Even doing the operation manually, SetPlaybackTimeWindow() affects the time of time-varying data, but does not affect the time of animation cues such as the cameras! or translation values, etc used to move objects around. I've also experimented a lot with setting various values of the GetAnimationScene() -- such as: StartTime, Duration (which seems to have no affect whatsoever), and AnimationTime. I created a tar file with an example state file and batch rendering script: http://www.freevr.org/Downloads/pvanimationtest.tar.gz The scene has three time-varying elements: * Annotated Time -- works * Time-varying data (meshes of digits 0-9) -- works * An arrow moving through a sphere -- fails NOTE: camera moves also fail, basically in the same way as the arrow. So how the arrow fails is that even when I begin the animation process in the middle, the arrow (and any camera moves) always start as though it were the first frame. By the time it gets to animation-time 5.0, the arrow should be through the sphere, but instead it appears to the left. To run a test, just do: % pvbatch 3Drender.py This will print out some information, and may print warnings about bad interpolation -- these are fine because it's a result of the interpolating between polygonal objects (the digits) that aren't intended to be morphed. The effect is sufficient that it works to tell me that data-time is working. Newly rendered frames go into the Frames directory. There are other directories of the form Frames-exN, which are various experiments I've run to figure out the problem. The state file that I am using is arrowspheredatai.pvsm (which is loaded in the Python script). This is a most desperate hour. Please help me O PV wizards, you are my only hope. Thanks in abundance, Bill -- Bill Sherman Sr. Technology Advisor Advanced Visualization Lab Pervasive Technology Inst Indiana University sherm...@indiana.edu ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
Re: [Paraview] Mixed Formulation FEM in Paraview
Theofilos, These may not be the most elegant solutions, but they are simple and will work very nicely. ParaView is capable of reading multiple datum sets and displaying the results either in the same window or in side-by-side windows (and, probably both scenarios at the same time). (1) Write out two separate results datum sets that are independently displayable. The first results datum set with mid-edge nodal points but without pressure at the vertex nodal points, and the second results datum set without the mid-edge nodal points but with pressure at the vertex nodal points. (2) When writing out a results datum set, generate a pressure at the mid-edge nodal points by averaging the pressure found at the edge's end-points. (3) Suggestion #2 can be extended. Since ParaView, at a fundamental level, was designed to display either "centered" cell-values and point-values, and you very likely have 20-node quadratic(?) hexahedrons with cell-values "centered" at a 2x2x2 Gaussian quadrature in which you are interested in seeing results, a painless way to get a single, simple displayable results datum set is, at the time you write out a given 20-node brick, break the 20-node quadratic brick and its cell data into eight 8-node linear bricks. (A similar effort is required when writing out point coordinates and point values.) When you get to ParaView, there will be no visual confusion as to which Gauss point result is located where in the finite element. While the display is not quadratic in its rendering, eight linear bricks for each quadratic brick is a pretty decent representation. It will get you started using ParaView. Quite possibly someone else can explain how ParaView renders quadratic data and elements. Samuel Key FMA Development, LLC 1005 39th Ave NE Great Falls, Montana 59404 On 12/9/2014 7:55 AM, Teo Ioannis wrote: I would like to ask if it is possible to display scalar, vector or tensor values at distinct nodes in a finite element mesh. To make things clearer, there exist finite element formulations where not all nodes have the same number of degrees of freedom. Consider the case of a 20 node hexahedral element. In a so called u-p formulation all 20 nodes have 3 displacement degrees of freedom (one for each x, y, z axis) but only the 8 corner nodes have pressure degrees of freedom. For this particular case, i know how to display the vector of displacements for all the nodes. But since only the corner nodes of each hexahedron have pressure degrees of freedom how can I instruct paraview to 'see' that only these nodes have the pressure scalar values and make the correct color interpolation? Thank you very much. Theofilos Manitaras ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
Re: [Paraview] Axis Labels in superscript scientific notation
Hi Venkatt, As far as I know, scientific notation with the exponent in superscipt is not currently possible. Cory On Thu, Dec 4, 2014 at 10:31 PM, Venkattraman A vayyasw...@ucmerced.edu wrote: I was wondering if there was a way to use the traditional scientific notation (1x10^16) instead of the E notation (1E16) in the axis labels (for example in a simple XY plot). I see there are three formats Mixed, Scientific and Fixed that Paraview allows but a lot of journals do not accept the E notation which according to Paraview is the Scientific notation. Regards, Venkatt -- Venkattraman A Assistant Professor School of Engineering SE1 346 University of California Merced 5200 N. Lake Rd Merced CA 95343 Phone: +1 (209) 228 2359 Email: vayyasw...@ucmerced.edu ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
Re: [Paraview] [EXTERNAL] Re: Axis Labels in superscript scientific notation
It doesn't sound like a bad idea, however. Mind writing up a feature request? Thanks, Alan -Original Message- From: ParaView [mailto:paraview-boun...@paraview.org] On Behalf Of Cory Quammen Sent: Tuesday, December 09, 2014 12:23 PM To: Venkattraman A Cc: ParaView Subject: [EXTERNAL] Re: [Paraview] Axis Labels in superscript scientific notation Hi Venkatt, As far as I know, scientific notation with the exponent in superscipt is not currently possible. Cory On Thu, Dec 4, 2014 at 10:31 PM, Venkattraman A vayyasw...@ucmerced.edu wrote: I was wondering if there was a way to use the traditional scientific notation (1x10^16) instead of the E notation (1E16) in the axis labels (for example in a simple XY plot). I see there are three formats Mixed, Scientific and Fixed that Paraview allows but a lot of journals do not accept the E notation which according to Paraview is the Scientific notation. Regards, Venkatt -- Venkattraman A Assistant Professor School of Engineering SE1 346 University of California Merced 5200 N. Lake Rd Merced CA 95343 Phone: +1 (209) 228 2359 Email: vayyasw...@ucmerced.edu ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
Re: [Paraview] [EXTERNAL] Re: Streaklines
Hi, The streakline filter requires a time dependent input as well as a vector field input (probably point data required but didn't verify this). After that, an input needs to be created for the seeds of the streaklines (i.e. the location that the streaklines go through). Select the time dependent input and then create the StreakLine filter. Then a dialog box will come up to set the seed source (Input should be set to the time dependent input and Seed Source should be set to the source to use for the streaklines). The seeds are the points in the Seed Source. Next, in the Properties panel you'll probably want to set Termination Time to something other than 0.0 since the streakline filter will integrate forward in time to that value. Thus, if it's 0.0 and the first time step is at 0.0 it will seem like the filter didnt' do anything. The Force Reinjection Every NSteps is essentially the resolution of the streakline. Note that PV's implementation of streaklines only does forward integration in time. Regards, Andy On Tue, Dec 9, 2014 at 10:58 AM, Pradeep Jha pradeep.kumar@gmail.com wrote: I am also trying to figure out the streakline filter. Still don't understand how to make it function :) On 5 December 2014 at 14:10, Scott, W Alan wasc...@sandia.gov wrote: Andy, Mind giving me an example of how to run this streakline filter? I have never used it before. Thanks! Alan *From:* ParaView [mailto:paraview-boun...@paraview.org] *On Behalf Of *Andy Bauer *Sent:* Friday, December 05, 2014 12:06 PM *To:* Pradeep Jha *Cc:* paraview@paraview.org *Subject:* [EXTERNAL] Re: [Paraview] Streaklines ParaView does indeed have a StreakLine filter. On Fri, Dec 5, 2014 at 12:30 PM, Pradeep Jha pradeep.kumar@gmail.com wrote: I have a unsteady 2D contour plot of a flow past a cylinder. Is it possible to plot the streaklines of a flow using Paraview? My solution file only contains the following data: U,V,W velocity and Pressure. ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
Re: [Paraview] [EXTERNAL] Re: Axis Labels in superscript scientific notation
Thanks Cory and Alan. I will put in a Feature request online. Venkatt On 12/09/2014 11:36 AM, Scott, W Alan wrote: It doesn't sound like a bad idea, however. Mind writing up a feature request? Thanks, Alan -Original Message- From: ParaView [mailto:paraview-boun...@paraview.org] On Behalf Of Cory Quammen Sent: Tuesday, December 09, 2014 12:23 PM To: Venkattraman A Cc: ParaView Subject: [EXTERNAL] Re: [Paraview] Axis Labels in superscript scientific notation Hi Venkatt, As far as I know, scientific notation with the exponent in superscipt is not currently possible. Cory On Thu, Dec 4, 2014 at 10:31 PM, Venkattraman A vayyasw...@ucmerced.edu wrote: I was wondering if there was a way to use the traditional scientific notation (1x10^16) instead of the E notation (1E16) in the axis labels (for example in a simple XY plot). I see there are three formats Mixed, Scientific and Fixed that Paraview allows but a lot of journals do not accept the E notation which according to Paraview is the Scientific notation. Regards, Venkatt -- Venkattraman A Assistant Professor School of Engineering SE1 346 University of California Merced 5200 N. Lake Rd Merced CA 95343 Phone: +1 (209) 228 2359 Email: vayyasw...@ucmerced.edu ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview -- Venkattraman A Assistant Professor School of Engineering SE1 346 University of California Merced 5200 N. Lake Rd Merced CA 95343 Phone: +1 (209) 228 2359 Email: vayyasw...@ucmerced.edu ___ 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 Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
[Paraview] animate parameter for python programmable filter
Hi,
I would like to animate a parameter with a python programmable filter using
keyframes. In this simple example, I just want to rescale a scalar variable
by a constant factor (alpha). But I want to animate this factor. Here is my
filter:
from paraview.vtk import dataset_adapter as DA
self.SetParameter('alpha', 0.1)
pdi = self.GetInputDataObject(0,0)
pdo = self.GetOutputDataObject(0)
pdo.CopyAttributes(pdi)
d = alpha * inputs[0].PointData['temperature']
arr = DA.numpyTovtkDataArray(d, 'temperature_scaled')
pdo.GetPointData().AddArray(arr)
This script works, but I can't set alpha using keyframes. It just doesn't
show up in the animation view.
Perhaps I have understood what the whole SetParameter framework does.
What is the point of setting these parameters if they can't be modified
from outside the filter?
Thanks in advance for your help.
-Ryan
___
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