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LBNL-UCB-STI / beam

The Framework for Modeling Behavior, Energy, Autonomy, and Mobility in Transportation Systems
https://transportation.lbl.gov/beam
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Skims: generate full OD skims for Austin in activitySim format #3236

Closed nikolayilyin closed 3 years ago

nikolayilyin commented 3 years ago

For the calculation, we need to generate block group centers using information from here - https://regional-open-data-capcog.opendata.arcgis.com/datasets/CAPCOG::block-groups-2020/about

The generated blockgroup-centers.csv.gz file should be stored in test/input/texas/ folder. Our taz-centers located here (in develop branch) - test/input/texas/taz-centers.csv.gz

Also, we need to use not all of them, but only those block groups that contain at least one taz center, or that overlap with the convex hull around the taz centers, or some other way of filtering out the additional block groups that don’t overlap with the model area.

In the following picture there is a comparison of block groups and our taz-centers image

dimaopen commented 3 years ago

I'm suggesting these block groups: austin_block_groups

Though there are some empty block groups (that don't have TAZ centroids inside). But they pretty close to some of TAZ centroids and I think that we can still assign some data to them. no_taz_centers_inside

zneedell commented 3 years ago

Yep, that looks great to me, thanks!

dimaopen commented 3 years ago

test/input/texas/taz-centers.csv.gz contains strange areas of the TAZ. Does it look right?

taz,coord-x,coord-y,area
4849100000123,2965472.4183966145,3664299.0226117913,6.920068649889972E-5
4845300000055,2956925.8697230937,3631038.691737053,4.443195504928893E-4
4845300001536,2947913.7229686803,3635486.759407475,3.9404276999364317E-4
dimaopen commented 3 years ago

@zneedell provided the new blockgroups that come directly from Urbansim. block_groups_austin.zip The generated skim file for these block groups is https://beam-outputs.s3.amazonaws.com/output/austin/skims/austin-skims-res-full-new.csv.gz