Dear Andrei, Yes, the "Resample To Image" Filter is dedicated to this task. It will allow convert you Unstructured Grid to a regular Image Data and allow you to save your data as a .vti file.
Best, Mathieu Westphal On Fri, Apr 13, 2018 at 10:35 AM, Andrei Cimpoeru < [email protected]> wrote: > Dear Mathiew/David, > > > Thanks a lot for you guidance. That was very helpful. > I have seen that you also support VTI. I had a look at the structure of > the format and it seems that this is a structured/rectilinear grid. The > data that I am woking with right now is unstructured .pvd. > Is there are way in Paraview to project/sample my unstructured dataset to > a rectiliniar/structured grid so then I can export it to .VTI format? > > Many thanks and I am looking forward to hear from you. > > Best, > > Andrei > > > > > On Thu, Apr 12, 2018 at 4:22 PM, David E DeMarle <[email protected] > > wrote: > >> You can export to cinema to get rendered images for which the data at >> each pixel in the image is a floating point value not a color. >> >> David E DeMarle >> Kitware, Inc. >> Principal Engineer >> 21 Corporate Drive >> <https://maps.google.com/?q=21+Corporate+Drive+Clifton+Park,+NY+12065&entry=gmail&source=g> >> Clifton Park, NY 12065 >> <https://maps.google.com/?q=21+Corporate+Drive+Clifton+Park,+NY+12065&entry=gmail&source=g> >> -8662 >> Phone: 518-881-4909 >> >> On Thu, Apr 12, 2018 at 11:13 AM, Mathieu Westphal < >> [email protected]> wrote: >> >>> Hello >>> >>> Please keep the ML in the cc so everyone can provide. >>> >>> You should be able to do that in the python shell. >>> >>> Views->Python Shell >>> >>> s = GetActiveSource() >>> r=Show(s) >>> l=r.LookupTable >>> l.RGBPoints >>> >>> >>> Best, >>> >>> Mathieu Westphal >>> >>> On Thu, Apr 12, 2018 at 3:14 PM, Andrei Cimpoeru < >>> [email protected]> wrote: >>> >>>> Dear Mathieu, >>>> >>>> Please see the attached picture. I think that I can see a way to get >>>> back to the original data. Is there a change to access the table with the >>>> *Color >>>> Transfer Function Values?* >>>> >>>> Cheers, >>>> >>>> Andrei >>>> >>>> On Thu, Apr 12, 2018 at 2:10 PM, Mathieu Westphal < >>>> [email protected]> wrote: >>>> >>>>> Dear Andrei >>>>> >>>>> There is no way to guess the pressure values with only the RGB data. >>>>> One can only guess the range and the color map used for generating the >>>>> image. >>>>> You will need to find the original data. >>>>> >>>>> Best, >>>>> >>>>> Mathieu Westphal >>>>> >>>>> On Thu, Apr 12, 2018 at 2:59 PM, Andrei Cimpoeru < >>>>> [email protected]> wrote: >>>>> >>>>>> >>>>>> Hi Mathieu, >>>>>> >>>>>> Thanks for getting back to me. Let's say that I have the image below >>>>>> (attached). If you load it in Paraview you have a vector field of PNG >>>>>> consisting of RGB values. How do I turn these values back to pressure. >>>>>> I am interested in this because I want to map the RGB colors back to >>>>>> pressure field. Is there any way to this using vtk-python? >>>>>> >>>>>> Cheers, >>>>>> >>>>>> Andrei >>>>>> >>>>>> >>>>>> >>>>>> On Thu, Apr 12, 2018 at 12:00 PM, Mathieu Westphal < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Dear Andrei, >>>>>>> >>>>>>> I'm not sure to follow what your are trying to achieve. Please >>>>>>> explain again. >>>>>>> >>>>>>> In any case, the mapping between the pressure and the RGB values you >>>>>>> see in paraview is controlled by >>>>>>> the Color Map Editor and the range of the data. All these tools are >>>>>>> accessible in the Toolbar visible in the attached image, I've >>>>>>> highligthed >>>>>>> the Color Editor button. >>>>>>> >>>>>>> Best regards, >>>>>>> >>>>>>> >>>>>>> Mathieu Westphal >>>>>>> >>>>>>> On Thu, Apr 12, 2018 at 12:28 PM, Andrei Cimpoeru < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> Hi , >>>>>>>> >>>>>>>> I am currently working with Paraview and deep learning models. I >>>>>>>> have created a set of images (.png) using Paraview. The images are >>>>>>>> related >>>>>>>> to the pressure field around a wing. When I load images back to >>>>>>>> Paraview >>>>>>>> all I can visualise are the RGB values. >>>>>>>> *When the image are exported from Paraview the pressure field is >>>>>>>> transferred into RGB values. Is there a way to obtain the function that >>>>>>>> does that?* >>>>>>>> Instead of exporting to .png a data format that I like is the .vti. >>>>>>>> This format keep the current information about pressure, velocity, mach >>>>>>>> number etc. Is there something that I could export a slice to .vti? >>>>>>>> >>>>>>>> Many thanks and I am looking forward to hear from you. >>>>>>>> >>>>>>>> Cheers, >>>>>>>> >>>>>>>> Andrei >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> *Andrei Cimpoeru* // CFD Engineer >>>>>>>> >>>>>>>> >>>>>>>> <https://cfms.org.uk/news-events/events/2018/july/farnborough-international-airshow-2018/> >>>>>>>> >>>>>>>> *e: *[email protected] *t*: 0117 906 1106 *w: * >>>>>>>> www.cfms.org.uk >>>>>>>> CFMS Services Ltd // Bristol & Bath Science Park // Dirac Crescent >>>>>>>> // Emersons Green // Bristol // BS16 7FR >>>>>>>> >>>>>>>> CFMS Services Ltd is registered in England and Wales No 05742022 - >>>>>>>> a subsidiary of CFMS Ltd >>>>>>>> CFMS Services Ltd registered office // 43 Queens Square // Bristol >>>>>>>> // BS1 4QP >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> 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 >>>>>>>> >>>>>>>> Follow this link to subscribe/unsubscribe: >>>>>>>> https://public.kitware.com/mailman/listinfo/paraview >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> *Andrei Cimpoeru* // CFD Engineer >>>>>> >>>>>> >>>>>> <https://cfms.org.uk/news-events/events/2018/july/farnborough-international-airshow-2018/> >>>>>> >>>>>> *e: *[email protected] *t*: 0117 906 1106 *w: * >>>>>> www.cfms.org.uk >>>>>> CFMS Services Ltd // Bristol & Bath Science Park // Dirac Crescent // >>>>>> Emersons Green // Bristol // BS16 7FR >>>>>> >>>>>> CFMS Services Ltd is registered in England and Wales No 05742022 - a >>>>>> subsidiary of CFMS Ltd >>>>>> CFMS Services Ltd registered office // 43 Queens Square // Bristol >>>>>> // BS1 4QP >>>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> *Andrei Cimpoeru* // CFD Engineer >>>> >>>> >>>> <https://cfms.org.uk/news-events/events/2018/july/farnborough-international-airshow-2018/> >>>> >>>> *e: *[email protected] *t*: 0117 906 1106 *w: * >>>> www.cfms.org.uk >>>> CFMS Services Ltd // Bristol & Bath Science Park // Dirac Crescent // >>>> Emersons >>>> Green // Bristol // BS16 7FR >>>> >>>> CFMS Services Ltd is registered in England and Wales No 05742022 - a >>>> subsidiary of CFMS Ltd >>>> CFMS Services Ltd registered office // 43 Queens Square // Bristol // >>>> BS1 4QP >>>> >>> >>> >>> _______________________________________________ >>> 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 >>> >>> Follow this link to subscribe/unsubscribe: >>> https://public.kitware.com/mailman/listinfo/paraview >>> >>> >> > > > -- > *Andrei Cimpoeru* // CFD Engineer > > > <https://cfms.org.uk/news-events/events/2018/july/farnborough-international-airshow-2018/> > > *e: *[email protected] *t*: 0117 906 1106 *w: * > www.cfms.org.uk > CFMS Services Ltd // Bristol & Bath Science Park // Dirac Crescent // Emersons > Green // Bristol // BS16 7FR > > CFMS Services Ltd is registered in England and Wales No 05742022 - a > subsidiary of CFMS Ltd > CFMS Services Ltd registered office // 43 Queens Square // Bristol // BS1 > 4QP >
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