Michal Migurski

I'm also interesting to know more about OCD identifiers. Who issues them, and how are they used?

Thanks James! Do they exist for precincts, and is such a list gettable someplace?

Thanks! I don’t see a place in the identifiers for a year. Since districts and precincts may change from year to year, how do OCD identifiers track that kind of...

Thanks for the clarification, James. I’d like to push on that a little: in the case of legislative districts and voting precincts, the meanings can change over time. Today’s “5th...

Sure, yeah. If you look at Florida’s 5th, it’s changed substantially in the past year. The pre-2016 and post-2016 areas it covers are almost disjoint, so there’s not really a...

That’s helpful clarification, thank you. OCD seems a bit less helpful if it doesn't deal with uniqueness, but it sounds like it might still help with external concordances as a...

Okay, followup question. http://editor.opencivicdata.org/geo/select/ is down, so what would be a correct pattern for a precinct like we're storing here? ocd-division/country:us/state:{postal-abbrev}/county:{name}/precinct:{?} They’re also variously called "wards" and confusingly "districts" in...

Those precinct IDs come from the Census, but only in cases where a state participated in the 2010 VTD program right?

For PlanScore, I’ve been assigning them artisinal integers. Works really well internally but not something I’ve exposed generally.

There’s something very off about the projection [in the 2001 file above](https://github.com/nvkelso/election-geodata/issues/10#issuecomment-284976517). It reports as tranverse mercator, but reprojecting to 4326 puts it near the equator. ``` Extent: (241777.209884, 98685.152902)...