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eli knaap
@knaaptime.com
urban planning & public policy prof @ UC Irvine | core dev @ PySAL & QuantEcon | urban social science & spatial data science | open source

https://knaaptime.com
instead i get

😑
November 19, 2025 at 5:37 PM
weighted results are also simple (70k observations this time). The histogram is still different from the original graph though (and the median rent actually drops a bit to 2270)

@besttrousers.bsky.social are you doing something i'm missing?

bsky.app/profile/knaa...
October 7, 2025 at 8:28 PM
extremely quick and dirty, but ignoring the survey weights, you can basically recreate these numbers from NYCHVS in ~9 lines. Only gives you 138 observations and the histogram is a little different (original seems to include $0? among a few other diffs), but the 2300 number shows up, fwiw.
October 7, 2025 at 7:42 PM
one thing i do miss from twitter is having people like Gillies around (he's not here, right?)

also: it's bullshit.
October 3, 2025 at 9:04 PM
October 3, 2025 at 6:15 PM
incidentally, about 3 blocks (in the other direction) from where this was taken back in 2017 knaaptime.com/urban_analys...
October 3, 2025 at 5:57 PM
Among so many other examples, this is just not how governing works
October 2, 2025 at 12:51 AM
cool news from PySAL world: the (imminent) next release of the `esda` module will have (1) spatial correlograms and (2) (more importantly) @levijohnwolf.bsky.social's partial Moran's I estimator described in

www.tandfonline.com/doi/pdf/10.1...

(both already in main if you can't wait 😎)
September 25, 2025 at 6:35 PM
i mean, he's also quite clear about *why* he's using a sensational title in his into. He wants this piece to be part of the conversation. But if you think clickbait is too pejorative, i guess i undertand
September 11, 2025 at 10:30 PM
i dunno. I thought dougherty's piece was wildly off, but this reads as a little disengenuous.

compact sprawl? by definition that's *not sprawl*. The cogent argument is we need metropolitan-scale regulation to support infill. It's better to just say that than to be click baity for more reads
September 11, 2025 at 9:52 PM
not yet published but I'm talking about our 3rd paper on the project at WVU's Regional Research Institute next friday, describing how to combine discrete choice with location-allocation models to explore tradeoffs in siting harm reduction services. Happy to post slides if anyone interested
September 8, 2025 at 7:39 PM
hey, um. esri is not a valid source for population forecasting.

www.nytimes.com/interactive/...
August 26, 2025 at 4:31 AM
OR, i'll forfeit the 20mil if you promise to stop being a dick to everyone else fighting for justice. This dude is incredible

bsky.app/profile/the-...
July 10, 2025 at 9:37 PM
continues to cackle from sn diego

bsky.app/profile/opin...
June 20, 2025 at 6:42 PM
we're just citing blog posts in SC rulings now? ill never understand this in the same way ill never understand why people are willing to read yglasias. who the fuck cares what ja rule thinks at a time like this?

bsky.app/profile/ripp...
June 18, 2025 at 11:36 PM
this is the distinction between people who understand AI and people who don't.

if you think the computer is capable of PhD caliber work (let alone 12x PhD work) you understand neither LLMs nor doctoral degrees (or people who hold them)
June 18, 2025 at 1:59 AM
Galster calls this influence from multiple externality spaces; we call it 'multiple spatial embeddings'. Travel behavior matters for the definitions of some externality spaces, but residential location defines your participation in many of the most important ones

link.springer.com/article/10.1...
June 16, 2025 at 2:36 AM
oh, the other reason is neighborhoods really only differentiate along a few dimensions, which are essentially class, race, age/household size, and density

knaaptime.com/urban_analys...

bsky.app/profile/knaa...
June 11, 2025 at 5:20 PM
When you’re a “conservative” being chastised by faculty at the Scalia School 😳

www.nytimes.com/2025/06/10/u...
June 10, 2025 at 7:10 PM
summer 25 addendum 🙄

bsky.app/profile/knaa...
June 10, 2025 at 4:24 PM
the culprit here is variation in the size of geographic units being displayed. One possible way to try to overcome that is to interpolate to a consistent zonal system

bsky.app/profile/paul...

knaaptime.com/urban_analys...
June 9, 2025 at 10:35 PM
there's a ~complete rough draft of Urban Analysis up on my website (as in, code executes all the way through)

knaaptime.com/urban_analysis

still lots of editing to do, but if you're into cities, Python, or spatial analysis, give it a look and let me know what's wrong :)
June 9, 2025 at 6:10 PM
dear political scientists,

who are your people that inherit from the Hotelling tradition and what do they have to say about today? why are democrats the only ones still playing the hot dog game???

seriously

bsky.app/profile/jame...
June 7, 2025 at 6:23 PM
without question every UC and CSU is an agglomeration center... i'd expect the local economic hit on places like Riverside or Merced would be massive; the hit + *spillover* from the LA, SF, SD metros would be massive

www.cnn.com/2025/06/06/p...

bsky.app/profile/knaa...
June 6, 2025 at 8:56 PM
HUD is iconic. favorite building ive ever worked in
May 29, 2025 at 4:27 PM