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MotionRugs: Visualizing Collective Trends in Space and Time (2018)

24 points by lichtenberger 8y ago

SiempreViernes 7y ago
Interesting use of Hilbert curves to flatten 2d images and still retain spatial coherency. Does anyone have a good resource for how to do this on a hexagon grid?
- nestorD 7y ago
  There is the Gosper curve : http://www.toroidalsnark.net/mkss3-pix/CalderheadJMM2014.pdf http://www.toroidalsnark.net/mkss3-pix/CalderheadJMM2014.pdf https://en.wikipedia.org/wiki/Gosper_curve https://en.wikipedia.org/wiki/Gosper_curve
  - SiempreViernes 7y ago
    Thanks dude!
- jmuhlich 7y ago
  If you think you want to use a Hilbert Curve for cache locality (on a square grid), you might want to check out the Z-Order Curve instead - https://en.wikipedia.org/wiki/Z-order_curve https://en.wikipedia.org/wiki/Z-order_curve . It has less ideal locality properties but can be computed more efficiently.
  - lichtenberger 7y ago
    Can we access the publication for free? Someone changed the link, originally it was: https://scibib.dbvis.de/uploadedFiles/MotionRugsPreprint.pdf https://scibib.dbvis.de/uploadedFiles/MotionRugsPreprint.pdf "For the Z-Order Curve we found that it is prone toproduce “Phantom-Splits”, visual artifacts creating the impression of a physical split of the entities when there is none. The Hilbert Curve insteaddisplays the spatial dynamic better than the Point-QuadTree and shows fewer artifacts than the Z-Order."
    - jmuhlich 7y ago
      I have pretty comprehensive journal access through my job but I still couldn’t get this one. It makes sense that the Hilbert curve gave more accurate results, and in that application it probably makes sense to spend more compute time for a better visualization.
stared 7y ago
"QuTiP example: Qubism visualizations" https://nbviewer.jupyter.org/github/qutip/qutip-notebooks/blob/master/examples/qubism-and-schmidt-plots.ipynb https://nbviewer.jupyter.org/github/qutip/qutip-notebooks/bl... And in my PhD thesis, there is a longer part on using recursive 2d visualizations: https://arxiv.org/abs/1412.6796 https://arxiv.org/abs/1412.6796 3 Visualization of quantum sequences 3.1.3 Visualizing sequences
sara12312 7y ago
World's biggest cat Even you can't believe it's size See her video https://howto105.blogspot.com/2019/04/worlds-biggest-cat.html https://howto105.blogspot.com/2019/04/worlds-biggest-cat.htm... See the video a dog shopping and lots of other acts like humans http://bit.ly/2DCpo9I http://bit.ly/2DCpo9I Fish walking with legs like humans See the video on link below http://bit.ly/2XRGyYD http://bit.ly/2XRGyYD This couple is different Girls are both twins and boys are also twin brothers see how they look in video http://bit.ly/2VwoZQd http://bit.ly/2VwoZQd A cute dog is dancing in video Just watch this video and try to control your laugh http://bit.ly/2ZK1XVs http://bit.ly/2ZK1XVs

24 points by lichtenberger 8y ago

Interesting use of Hilbert curves to flatten 2d images and still retain spatial coherency. Does anyone have a good resource for how to do this on a hexagon grid?

nestorD 7y ago
There is the Gosper curve : http://www.toroidalsnark.net/mkss3-pix/CalderheadJMM2014.pdf http://www.toroidalsnark.net/mkss3-pix/CalderheadJMM2014.pdf https://en.wikipedia.org/wiki/Gosper_curve https://en.wikipedia.org/wiki/Gosper_curve
- SiempreViernes 7y ago
  Thanks dude!
jmuhlich 7y ago
If you think you want to use a Hilbert Curve for cache locality (on a square grid), you might want to check out the Z-Order Curve instead - https://en.wikipedia.org/wiki/Z-order_curve https://en.wikipedia.org/wiki/Z-order_curve . It has less ideal locality properties but can be computed more efficiently.
- lichtenberger 7y ago
  Can we access the publication for free? Someone changed the link, originally it was: https://scibib.dbvis.de/uploadedFiles/MotionRugsPreprint.pdf https://scibib.dbvis.de/uploadedFiles/MotionRugsPreprint.pdf "For the Z-Order Curve we found that it is prone toproduce “Phantom-Splits”, visual artifacts creating the impression of a physical split of the entities when there is none. The Hilbert Curve insteaddisplays the spatial dynamic better than the Point-QuadTree and shows fewer artifacts than the Z-Order."
  - jmuhlich 7y ago
    I have pretty comprehensive journal access through my job but I still couldn’t get this one. It makes sense that the Hilbert curve gave more accurate results, and in that application it probably makes sense to spend more compute time for a better visualization.

stared 7y ago

"QuTiP example: Qubism visualizations" https://nbviewer.jupyter.org/github/qutip/qutip-notebooks/blob/master/examples/qubism-and-schmidt-plots.ipynb https://nbviewer.jupyter.org/github/qutip/qutip-notebooks/bl... And in my PhD thesis, there is a longer part on using recursive 2d visualizations: https://arxiv.org/abs/1412.6796 https://arxiv.org/abs/1412.6796 3 Visualization of quantum sequences 3.1.3 Visualizing sequences

sara12312 7y ago

World's biggest cat Even you can't believe it's size See her video https://howto105.blogspot.com/2019/04/worlds-biggest-cat.html https://howto105.blogspot.com/2019/04/worlds-biggest-cat.htm... See the video a dog shopping and lots of other acts like humans http://bit.ly/2DCpo9I http://bit.ly/2DCpo9I Fish walking with legs like humans See the video on link below http://bit.ly/2XRGyYD http://bit.ly/2XRGyYD This couple is different Girls are both twins and boys are also twin brothers see how they look in video http://bit.ly/2VwoZQd http://bit.ly/2VwoZQd A cute dog is dancing in video Just watch this video and try to control your laugh http://bit.ly/2ZK1XVs http://bit.ly/2ZK1XVs