Chicago Population PyramidsDistricting for the Chicago Public Schools elected boardCharter EnrollmentChicago Births, 1989-2022Illinois Births, TotalCPS Decline and Market ShareDeclines in Pre-K Enrollment at CPSChicago Public School Enrollment ProjectionsCPS Cohort sizesCPS and Illinois report different graduation rates for Chicago high schoolsTrends in tier scores at CPS Selective Enrollment High SchoolsTier Scoreschoice and offers
Approximate Distance to School Estimations
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mean_sending_distance = d3.rollup(
points,
(v) => d3.mean(v, (d) => d.distance),
(d) => d.sending_school_id
)
receiving_school_ids = Array.from(
new Set(receiving_zoned.map((d) => d.ATTSCH_ID))
)
receiving_school_counts = Object.fromEntries(
receiving_school_ids.map((d) => [d, 0])
)
location_lookup = new Map(
receiving_locations.features.map((d) => [
d.properties.school_id,
d.geometry.coordinates
])
)
points = {
let all_points = [];
for (const feature of sending.features) {
const sending_points = dot_density(
{ type: "FeatureCollection", features: [feature] },
receiving_school_ids,
students_per_point,
random_points,
5,
index
).map((d) => ({
x: d.x,
y: d.y,
school_id: d.field,
sending_school_id: feature.properties.school_id,
distance: hav.distance(d.x, d.y, ...location_lookup.get(d.field))
}));
all_points = all_points.concat(sending_points);
}
return all_points;
}
index = {
const dex = new KDBush(random_points.length);
for (const [x, y] of random_points) {
dex.add(x, y);
}
dex.finish();
return dex;
}
random_points = points_under_18.features[0].geometry.coordinates
points_under_18 = FileAttachment("points_under_18@2.geojson").json()
sending = {
const sending = structuredClone(boundary);
for (const zoned_school of sending.features) {
const recipients = sending_lookup.get(zoned_school.properties.school_id);
zoned_school.properties = {
...zoned_school.properties,
...receiving_school_counts,
...Object.fromEntries(recipients)
};
}
return sending;
}
students_per_point = 5
KDBush = require("kdbush")
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