Thank you Samuel, The "Clip-> Box" filter is definitely better, but it still cuts out portions of arrows. I am ataching a picture for illustration.
[image: Inline image 1] These issues seem to arise because the arrows are not seen as unitary objects, but as a tube and a pointer. Using cones instead of arrows is not useful, the cones do not respect the start and end points same as arrows. Dorian On Tue, Nov 1, 2016 at 12:03 PM, Samuel Key <[email protected]> wrote: > Dorian, > > Try the CLIP filter with a box. > > Sam Key > > On 11/1/2016 9:34 AM, Dorian Pustina wrote: > > Thank you both for the suggestions. I managed to have the arrows via > python calculator, but couldn't make the Temporal Particles to Pathlines > filter produce arrows. > > Can I bug you with another question? > > I want to apply a Slice filter to see the arrows that depart from that > slice. But the filter in Paraview just cuts through the objects in that > slice, it doesn't show the whole arrows. It also does not have any > tolerance (i.e., to pick points 2mm before and after the slice). Is there > another way to get a slice with full arrows, and have some tolerance to > pick up more points before and after the slice? > > > > On Tue, Nov 1, 2016 at 10:20 AM, Moreland, Kenneth <[email protected]> > wrote: > >> If you want to draw a line from point positions at two subsequent time >> steps, you can use the Temporal Particles To Pathlines filter, which traces >> a line behind particles as they move through space and time. When you use >> this filter for your purposes, set Mask Points to 1 and Max Track Length to >> 2. (You can increase Max Track Length to lengthen the line to connect more >> than 2 timesteps.) Note that you will not see any lines until you step time. >> >> >> >> The Temporal Particles to Pathlines filter actually has two outputs. The >> first, named Pathlines, contains the lines. The second, named Particles, is >> a point at the end position of the line. You can add a glyph to this output >> to create arrow-like filters. >> >> >> >> -Ken >> >> >> >> *From:* ParaView [mailto:[email protected]] *On Behalf Of *Dorian >> Pustina >> *Sent:* Monday, October 31, 2016 8:09 PM >> *To:* [email protected] >> *Subject:* [EXTERNAL] [Paraview] Compute line between coordinates >> >> >> >> Hello everyone, >> >> >> >> I am working on visualizing some brain imaging data. I have a bunch of >> points in 3D space, which have two sets of coordinates: x1/y1/z1 and >> x2/y2/z2. All I need is to show arrow glyphs starting from the first >> coordinate and ending to the second coordinate. I currently import the data >> as csv. I tried using the time series option, and I can loop through the >> two time points, but can't find how to model a line or an arrow for each >> point between the two times. I also tried to compute what is called >> "velocity fields", that is a set of 3 scalar factors that if multiplied >> with the original coordinates would yield the second coordinate (using >> Calculator): >> >> iHat*X snapped+jHat*Y snapped+kHat*Z snapped >> >> >> >> Still, I don't get reasonable results. The problem looks trivial but I >> couldn't find any solution online after hours of search. It is not even >> clear to me what does the above formula do exactly. >> >> >> >> Can someone help if this is possible? >> >> >> >> Dorian >> > > > > _______________________________________________ > 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: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 > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > >
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