Origin destination Mapping

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HAPPY

• April 08, 2022 17:29

Can I make origin-destination visualization in OmniSci? Preferably, 3 D lines from origin points to Destination points? Thanks!

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  Candido Dessanti

  • April 11, 2022 08:13

  Hi,

  sorry for the late reply, dut I really didn't see this message before.

  What do you mean? curved lines like that?

  

  We have support for linestrings, but we haven't a built-in function that uses two points to generate a curved linestring nor a straight linestring.

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  HAPPY

  • April 12, 2022 02:50

  Thanks @candido.dessanti . yes, I meant curved lines like this.

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  Candido Dessanti

  • April 12, 2022 15:35

  Hi,

  Unlucky, right now, we don't have a function to create a linestring on the fly, so the only option to do that is to precalculate the linestrings outside the database, at least with the 5.10 release.

  An easy way to precalculate would be to use PostGIS. The final result using our flights' dataset is like that.

  

  I will post directions on how to pre-compute those geometries ASAP.

  Regards, Candido

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  Michael Flaxman

  • May 05, 2022 04:51

  As a really weird coincidence...I helped write one of these and open sourced it awhile back. But it was before I discovered OmniSci so written in Django with postGIS:

  https://github.com/geodesign/spatialsankey

  So if you're up for some installations, the stack required would be postGIS + Django -> Heavy (via HeavyConnect). A fair bit of work for nice curved lines I'm afraid. Otherwise, if you've got some Python skills, you could extract our logic for generating and then export directly into Heavy with our python library.

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