I map 🗺️ & graph 📈 data 🈸
Published
Edited
Feb 25, 2019
9 stars
Also listed in…
Chicago Crimes
html `<div id="grid" style="position:relative; width:${width}px; height:400px"></div>`
grid = showData(data, document.querySelector('div#grid'))
function showData (data, gridDiv) {
return new window.fin.Hypergrid(gridDiv, {data: data});
}
Hypergrid = require('https://fin-hypergrid.github.io/core/demo/build/fin-hypergrid.js').catch(() => window.fin.Hypergrid)
dataUrl = 'https://raw.githubusercontent.com/RandomFractals/ChicagoCrimes/master/data/2018/chicago-crimes-2018.arrow'
dataTable = loadData(dataUrl).then(buffer => arrow.Table.from(new Uint8Array(buffer)))
data = toJSON(dataTable)
function toJSON(dataTable) {
let date, block, location, arrested, type, info, lat, lng, results = [];
dataTable.scan((index) => {
results.push({
'Date': toDate(date(index)).toISOString().substring(0, 10), // ISO date string
'Location': `${block(index)} (${location(index).toLowerCase()})`,
'Arrested': arrested(index),
'Description': `${type(index).toLowerCase()}: ${info(index).toLowerCase()}`,
//'Latitude': lat(index),
//'Longitude': lng(index),
});
}, (batch) => {
date = arrow.predicate.col('Date').bind(batch);
block = arrow.predicate.col('Block').bind(batch);
location = arrow.predicate.col('LocationDescription').bind(batch);
arrested = arrow.predicate.col('Arrest').bind(batch);
type = arrow.predicate.col('PrimaryType').bind(batch);
info = arrow.predicate.col('Description').bind(batch);
lat = arrow.predicate.col('Latitude').bind(batch);
lng = arrow.predicate.col('Longitude').bind(batch);
}
);
return results;
}
import {loadData, toDate} from '@randomfractals/apache-arrow'
arrow = require('apache-arrow@0.3.1')
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