28:null 29:["$","title",null,{"children":"State of Bikeshare (as of Aug 2023) | Brady Law | Observable"}] 2e:Tdeb,sources = aq.from([ { system: "Bay Wheels", file: FileAttachment("bay_wheels@2.csv"), location: "San Francisco Bay Area", data_agreement_label: "Bay Wheels License Agreement", data_agreement_url: "https://baywheels-assets.s3.amazonaws.com/data-license-agreement.html", data_url: "https://www.lyft.com/bikes/bay-wheels/system-data", map_defaults: { longitude: -122.4194, latitude: 37.7749, zoom: 12, }, }, { system: "Bixi", file: FileAttachment("bixi@3.csv"), location: "Montréal, CA", data_agreement_label: "Terms and Conditions", data_agreement_url: "https://bixi.com/en/website-terms", data_url: "https://bixi.com/en/open-data", map_defaults: { longitude: -73.5673, latitude: 45.5017, zoom: 11, }, }, { system: "Bluebikes", file: FileAttachment("bluebikes.csv"), location: "Boston", data_agreement_label: "Bluebikes Data License Agreement", data_agreement_url: "https://www.bluebikes.com/data-license-agreement", data_url: "https://www.bluebikes.com/system-data", map_defaults: { longitude: -71.0942, latitude: 42.3601, zoom: 12, } }, { system: "Capital Bikeshare", file: FileAttachment("capital_bikeshare.csv"), location: "Washington D.C.", data_agreement_label: "Capital Bikeshare Data License Agreement", data_agreement_url: "https://www.capitalbikeshare.com/data-license-agreement", data_url: "https://www.capitalbikeshare.com/system-data", map_defaults: { longitude: -77.0369, latitude: 38.9072, zoom: 12, } }, { system: "Citi Bike", file: FileAttachment("citi_bike@1.csv"), location: "New York", data_agreement_label: "NYCBS Data Use Policy", data_agreement_url: "https://ride.citibikenyc.com/data-sharing-policy", data_url: "https://ride.citibikenyc.com/system-data", map_defaults: { longitude: -73.98, latitude: 40.7357548, zoom: 11, } }, { system: "CoGo", file: FileAttachment("cogo@1.csv"), location: "Columbus", data_agreement_label: "CoGo Data License Agreement", data_agreement_url: "https://www.cogobikeshare.com/data-license-agreement", data_url: "https://www.cogobikeshare.com/system-data", map_defaults: { longitude: -82.9988, latitude: 39.9612, zoom: 12, } }, { system: "Divvy", file: FileAttachment("divvy@1.csv"), location: "Chicago", data_agreement_label: "Divvy Data License Agreement", data_agreement_url: "https://www.divvybikes.com/data-license-agreement", data_url: "https://www.divvybikes.com/system-data", map_defaults: { longitude: -87.6298, latitude: 41.8781, zoom: 11, } }, { system: "Indego", file: FileAttachment("indego.csv"), location: "Philidelphia", data_agreement_label: "Terms and Conditions", data_agreement_url: "https://www.rideindego.com/terms-and-conditions/", data_url: "https://www.rideindego.com/about/data/", map_defaults: { longitude: -75.1652, latitude: 39.9526, zoom: 12, } }, { system: "Metro Bike Share", file: FileAttachment("metro_bike_share.csv"), location: "Los Angeles", data_agreement_label: "Terms and Conditions", data_agreement_url: "https://bikeshare.metro.net/terms-and-conditions/", data_url: "https://bikeshare.metro.net/about/data/", map_defaults: { longitude: -118.2518, latitude: 34.0488, zoom: 12, } } 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`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":911,"value":"viewof start_or_end_locations = Inputs.radio([\"start_location\", \"end_location\"], {label: \"Select:\", value: \"start_location\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":902,"value":"viewof start_location_bucket_meters = Inputs.range([5, 1000], {step: 5, label: \"Bucket size (meters):\", value: 25})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":815,"value":"## Most popular stations\n\nOften the most popular stations are at public transit hubs, like Caltrain and BART stations in SF Bay area, or Grand Central Terminal (Pershing Square North) in NYC.\n\n_**Note:** Stations are occasionally renamed, which can impact rankings across longer time spans._","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":821,"value":"most_popular_stations\n .select(\"start_station_name\", \"count\")\n .rename({start_station_name: 'Start station', count: 'Trips (thousands)'})\n .view({limit: 50})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1468,"value":"---\n\n## ${system.system} stations over time","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1567,"value":"**${format_num(most_popular_stations.params({station_min_year}).filter(d => op.year(d.first_ride_at) <= station_min_year).numRows())}** stations were active on or before **${station_min_year}**. Newly active stations appear as blue, existing shown in white, and new stations in the year are shown in blue.\n\nMany systems have massively expanded their footprint since launch. 📈","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1545,"value":"viewof station_min_year = {\n const year = new Date().getFullYear()\n return Inputs.range([2009, year], {step: 1, label: \"Select year:\", value: year - 2})\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1471,"value":"station_age_container = html`

`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":876,"value":"## Popular new stations\n\nIn the past **${new_station_months}** month(s), these stations have the most trips. Before that time, there were no sampled trips (likely indicating a new station).\n\n_**Warning:** Lower trip counts are highly subject to sampling error._","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":893,"value":"viewof new_station_months = Inputs.range([0, 36], {step: 1, label: \"Months:\", value: 12})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":942,"value":"{\n const approxMsInMonths = 1000 * 60 * 60 * 25 * 30\n return most_popular_stations\n .params({approxMsInMonths, max_date, new_station_months})\n .filter(d => op.timestamp(d.first_ride_at) >= op.timestamp(max_date) - approxMsInMonths * new_station_months)\n .derive({first_ride_at: d => op.substring(d.first_ride_at, 0, 16)})\n .select(\"start_station_name\", \"count\", \"first_ride_at\")\n .rename({start_station_name: 'Start station', count: 'Trips (thousands)', first_ride_at: 'First trip at'})\n .view({limit: 50})\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":245,"value":"---\n\n## ${system.system} trips per quarter of year (thousands)\n\nIn systems with cold winters like Citi Bike (NYC) or Divvy (Chicago), seasonality has a significant impact on ridership. ☃️","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1241,"value":"_**Note:** Most recent quarter of data may be incomplete._","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2128,"value":"swatches({color: d3.scaleOrdinal([\"Jan - Mar\", \"Apr - Jun\", \"Jul - Sep\", \"Oct - Dec\"],[\"#bab0ab\", \"#59a14f\", \"#76b7b2\", \"#f28e2c\"])})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":252,"value":"Plot.plot({\n grid: true,\n marginBottom: 80,\n color: {\n domain: [0, 1, 2, 3],\n range: [\"#bab0ab\", \"#59a14f\", \"#76b7b2\", \"#f28e2c\"]\n },\n x: {\n tickRotate: -90,\n type: \"band\",\n label: null\n },\n y: {\n label: \"trips (1k)\",\n tickPadding: 1\n },\n marks: [\n Plot.ruleY([0]),\n Plot.barY(trips_per_quarter, {x: \"time_bucket\", y: \"count\", fill: d => d.time_bucket.getUTCMonth() / 3})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":218,"value":"## ${system.system} year-over-year % change in trips\n\nNearly all systems had a big drop in ridership in 2020 when the pandemic hit, but most have recovered and many have hit new records since.","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":189,"value":"Plot.plot({\n grid: true,\n marginBottom: 80,\n x: {\n tickRotate: -90,\n type: \"band\",\n label: null\n },\n y: {\n percent: true\n },\n color: {\n type: \"linear\",\n domain: [-1, 1],\n interpolate: t => `hsl(${t >= .5 ? 140 : 355}, ${Math.round(Math.abs(2 * (t - 0.5)) * 40) + 30}%, 55%)`\n },\n marks: [\n Plot.ruleY([-1, 0, 1]),\n Plot.barY(trips_year_over_year, {x: \"time_bucket\", y: \"yoy\", fill: \"yoy\"}),\n Plot.text(trips_year_over_year, {\n x: \"time_bucket\",\n y: \"yoy\",\n text: d => `${d.yoy > 0 ? '+' : ''}${op.round(d.yoy * 100)}%`,\n dy: -5\n })\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":264,"value":"---\n\n## ${system.system} trips by member status (thousands)\n\nMany systems have shown a rise in casual ridership (non-member trips) in recent years.","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1246,"value":"_**Note:** Most recent quarter of data may be incomplete._","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2010,"value":"swatches({color: trips_per_quarter_by_status_color_scale})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":277,"value":"Plot.plot({\n grid: true,\n marginBottom: 80,\n x: {\n tickRotate: -90,\n type: \"band\",\n label: null\n },\n y: {\n label: \"trips (1k)\"\n },\n color: {\n domain: trips_per_quarter_by_status_color_scale.domain(),\n range: trips_per_quarter_by_status_color_scale.range()\n },\n marks: [\n Plot.ruleY([0]),\n Plot.barY(trips_per_quarter_by_status, {y: \"count\", x: \"time_bucket\", fill: \"user_type\"})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":834,"value":"## ${system.system} trips by bike type (thousands)\n\nE-bike trips generally cost more, but are faster and require less effort than a traditional bikeshare bikes. ⚡️\n\nDespite their popularity, e-bike availability differs greatly by city. Citi Bike, for example, is seeing a declining percentage of e-bike availability leading to [user complaints](https://www.curbed.com/2023/07/citi-bikes-electric-bikes-lyft-broken-maintenance-batteries.html).","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2003,"value":"swatches({ color: trips_per_quarter_by_rideable_type_color_scale })","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":840,"value":"Plot.plot({\n grid: true,\n marginBottom: 80,\n x: {\n tickRotate: -90,\n type: \"band\",\n label: null\n },\n y: {\n label: \"trips (1k)\"\n },\n color: {\n domain: trips_per_quarter_by_rideable_type_color_scale.domain(),\n range: trips_per_quarter_by_rideable_type_color_scale.range()\n },\n marks: [\n Plot.ruleY([0]),\n Plot.barY(trips_per_quarter_by_rideable_type, {y: \"count\", x: \"time_bucket\", fill:\"rideable_type\"})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1402,"value":"---\n\n# A closer look: Bay Wheels e-bikes ⚡️\n\nHow do e-bikes perform as compared to classic bikes? For popular routes with 100+ data points for both bike types, we can inspect median travel times and compare durations of a typical trip.\n\nWe see that for the majority of routes, the median **travel time is 10-30% faster on an e-bike.**","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1413,"value":"{\n const data = ebikePerfData.slice(0, 25)\n return Plot.plot({\n marginLeft: 350,\n grid: true,\n x: {\n axis: \"top\",\n label: \"← % change in duration (ebike vs classic) →\",\n labelAnchor: \"center\",\n percent: true\n },\n y: {\n label: null,\n domain: data.array(\"route\")\n },\n marks: [\n Plot.barX(data, {\n y: \"route\",\n x: d => -1 + d.speed_ratio\n }),\n Plot.ruleX([0]),\n Plot.ruleX([-1])\n ]\n })\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1982,"value":"---\n\n**Thanks for reading!**\n\nInterested in digging in more? Fork this notebook and discover new insights.\n\nThis post leverages the [opendata](https://github.com/babldev/opendata) python library for bulk download and processing of the public data.\n","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1991,"value":"shareTweet(document.baseURI, {\n buttonText: \"Share this notebook\",\n text: \"An interactive look at bikeshare in the US\",\n hashtags: \"observablehq,bikeshare,opendata\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2353,"value":"html`

500 ? 500 : width}px;\"/>`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":997,"value":"---\n\n## Data filters (optional)","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":727,"value":"viewof start_date = Inputs.date({label: \"Start date:\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":737,"value":"viewof end_date = Inputs.date({label: \"End date:\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":229,"value":"---\n\n## Workbook\n\n### Imports","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":49,"value":"import { aq, op } from '@uwdata/arquero'","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":318,"value":"import { swatches } from \"@d3/color-legend\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1989,"value":"import {shareTweet} from \"@pierreleripoll/share-on-twitter-button\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2555,"value":"import {update} from \"@uwdata/arquero-row-manipulation\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":555,"value":"deckgl = require('deck.gl@~5.2.0/deckgl.min.js')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":593,"value":"mapboxgl = require('mapbox-gl@~2.6.1/dist/mapbox-gl.js')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":404,"value":"### Data","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":412,"value":"$2e","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":524,"value":"// system = sources.objects()[0]\nsystem = {\n return sources\n .params({choice: system_choice})\n .filter((d, $) => d.system == $.choice).objects()[0]\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":6,"value":"data = {\n const text = await system.file.text();\n const parseTime = d3.timeParse(\"%Y-%m-%d %H:%M:%S.%L\");\n const parseTimeLong = d3.timeParse(\"%Y-%m-%d %H:%M:%S\");\n return aq\n .from(d3.csvParse(text, (row) => {\n row.started_at = parseTime(row.started_at) || parseTimeLong(row.started_at);\n row.ended_at = parseTime(row.ended_at) || parseTimeLong(row.ended_at);\n return row;\n }))\n .params({start_date: start_date, end_date: end_date})\n .filter((t, $) => (!$.start_date || t.started_at >= $.start_date) && (!$.end_date || t.started_at <= $.end_date));\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":241,"value":"trips_per_year = {\n return data\n .derive({time_bucket: trip => op.year(trip.started_at) })\n .groupby('time_bucket').count({as: 'count'})\n .orderby('time_bucket')\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":55,"value":"trips_per_quarter = fillEmptyQuarterBins(data\n .derive({time_bucket: trip => op.utcdatetime(op.year(trip.started_at), Math.floor(op.month(trip.started_at) / 3) * 3)}, \"count\", \"0\")\n .groupby('time_bucket').count({as: 'count'})\n .orderby('time_bucket'), \"count\", 0)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":168,"value":"trips_year_over_year = trips_per_quarter\n .derive({yoy: row => (row.count - op.lag(row.count, 4, 0)) / op.lag(row.count, 4, 0)})\n .derive({yoy: row => op.is_finite(row.yoy) ? row.yoy : 0})\n .slice(5, -1) // lag is of size 4, we add 1 in case first bucket is not an entire time window","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":271,"value":"trips_per_quarter_by_status = data\n .derive({\n time_bucket: trip => op.utcdatetime(\n op.year(trip.started_at), Math.floor(op.month(trip.started_at) / 3) * 3),\n user_type: trip => trip.user_type ? trip.user_type : \"n/a\"\n })\n .groupby('time_bucket', 'user_type').count({as: 'count'})\n .orderby('time_bucket', 'user_type')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":322,"value":"trips_per_quarter_by_status_color_scale = d3.scaleOrdinal(\n [...new Set(trips_per_quarter_by_status.array(\"user_type\"))],\n d3.schemeTableau10\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":845,"value":"trips_per_quarter_by_rideable_type = data\n .derive({\n time_bucket: trip => op.utcdatetime(\n op.year(trip.started_at), Math.floor(op.month(trip.started_at) / 3) * 3),\n rideable_type: trip => trip.rideable_type ? trip.rideable_type : \"n/a\"\n })\n .groupby('time_bucket', 'rideable_type').count({as: 'count'})\n .orderby('time_bucket', 'rideable_type')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":849,"value":"trips_per_quarter_by_rideable_type_color_scale = d3.scaleOrdinal(\n [...new Set(trips_per_quarter_by_rideable_type.array(\"rideable_type\"))],\n d3.schemeTableau10\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":953,"value":"most_popular_stations = data\n .filter(d => d.start_station_name)\n .groupby('start_station_name')\n .rollup({\n 'count': op.count(),\n 'first_ride_at': d => op.min(d.started_at),\n 'lat': d => op.max(d.start_lat),\n 'lng': d => op.max(d.start_lng)\n })\n .orderby(aq.desc('count'))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":960,"value":"max_date = end_date ? end_date : new Date()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1337,"value":"ebikePerfData = {\n const text = await FileAttachment(\"electric_vs_classic.csv\").text()\n return aq.from(d3.csvParse(text))\n .derive({\n \"speed_ratio\": d => d[\"electric_bike_duration\"] / d[\"classic_bike_duration\"],\n \"route\": d => `${d.start_station_name} → ${d.end_station_name}`\n })\n .orderby(aq.desc(\"electric_bike_count\"), aq.desc(\"classic_bike_count\"))\n .select(\"route\", \"electric_bike_count\", \"classic_bike_count\", \"electric_bike_duration\", \"classic_bike_duration\", \"speed_ratio\")\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1699,"value":"totals = {\n const text = await FileAttachment(\"totals-2.csv\").text()\n return aq.from(d3.csvParse(text)).derive({mil_trips: total => total.count / 1000 })\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2302,"value":"system_colors = d3.scaleOrdinal(\n sources.array(\"system\"),\n d3.schemeTableau10\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2437,"value":"format_num = d3.format(\",\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2507,"value":"fillEmptyQuarterBins = function(d, column, default_value) {\n const range = d.rollup({ min: op.min('time_bucket'), max: op.max('time_bucket') }).object()\n const minYear = range.min.getUTCFullYear();\n const maxYear = range.max.getUTCFullYear();\n const minMonth = range.min.getUTCMonth();\n const maxMonth = range.max.getUTCMonth();\n var result = []\n for (var year = range.min.getUTCFullYear(); year <= range.max.getUTCFullYear(); year++) {\n var month = (year == minYear) ? minMonth : 0\n const curEndMonth = (year == maxYear) ? maxMonth : 11\n for (month; month <= curEndMonth; month += 3) {\n result.push({time_bucket: new Date(Date.UTC(year, month, 1)), [column]: default_value})\n }\n }\n const defaultTable = aq.from(result)\n return defaultTable.join_left(d, \"time_bucket\", update(defaultTable, d)).orderby(\"time_bucket\");\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":587,"value":"### Visualizations","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":623,"value":"map = {\n return new deckgl.DeckGL({\n container,\n map: mapboxgl,\n mapboxAccessToken: '',\n // This token is for demo-purpose only and rotated regularly. Get your token at https://www.mapbox.com\n mapboxApiAccessToken: 'pk.eyJ1IjoiYnJhZHltYXBzMTIzIiwiYSI6ImNrdzc1bnp0c2Jtd3Uyb3FwdWpwb2ltMXgifQ.DoBCUXOl9uG4xuWl-ZLpjg',\n mapStyle: 'mapbox://styles/mapbox/dark-v9',\n longitude: system.map_defaults.longitude,\n latitude: system.map_defaults.latitude,\n zoom: system.map_defaults.zoom,\n minZoom: 5,\n maxZoom: 14,\n pitch: 35,\n touchRotate: true\n });\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":668,"value":"html `\n(Mapbox Stylesheet)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":682,"value":"colorRange = {\n return [\n [1, 152, 189],\n [73, 227, 206],\n [216, 254, 181],\n [254, 237, 177],\n [254, 173, 84],\n [209, 55, 78]\n ];\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":776,"value":"{\n system\n map.setProps({\n initialViewState: {\n longitude: system.map_defaults.longitude,\n latitude: system.map_defaults.latitude,\n zoom: system.map_defaults.zoom\n }\n })\n return html `(System select observer)`\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":680,"value":"lightSettings = {\n return {\n lightsPosition: [-0.144528, 49.739968, 8000, -3.807751, 54.104682, 8000],\n ambientRatio: 0.6,\n diffuseRatio: 0.7,\n specularRatio: 0.3,\n lightsStrength: [0.75, 0.0, 0.75, 0.0],\n numberOfLights: 2\n };\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":678,"value":"{\n const locationMap = {\n start_location: {\n lat: \"start_lat\",\n lng: \"start_lng\"\n },\n end_location: {\n lat: \"end_lat\",\n lng: \"end_lng\"\n }\n };\n const locationMapChoice = locationMap[start_or_end_locations];\n\n const hexagonLayer = new deckgl.HexagonLayer({\n id: 'heatmap',\n colorRange,\n data: data.params({locationMapChoice}).filter((d, $) => d[$.locationMapChoice.lat] && d[$.locationMapChoice.lng]).objects(),\n elevationRange: [0, 100],\n elevationScale: 50,\n extruded: true,\n getPosition: d => [d[locationMapChoice.lng], d[locationMapChoice.lat]],\n material: true,\n opacity: 0.2,\n radius: start_location_bucket_meters,\n upperPercentile: 100,\n lightSettings\n });\n\n map.setProps({layers: [hexagonLayer]});\n \n return hexagonLayer;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1479,"value":"stations_age_map = {\n return new deckgl.DeckGL({\n container: station_age_container,\n map: mapboxgl,\n mapboxAccessToken: '',\n // This token is for demo-purpose only and rotated regularly. Get your token at https://www.mapbox.com\n mapboxApiAccessToken: 'pk.eyJ1IjoiYnJhZHltYXBzMTIzIiwiYSI6ImNrdzc1bnp0c2Jtd3Uyb3FwdWpwb2ltMXgifQ.DoBCUXOl9uG4xuWl-ZLpjg',\n mapStyle: 'mapbox://styles/mapbox/dark-v9',\n longitude: system.map_defaults.longitude,\n latitude: system.map_defaults.latitude,\n zoom: system.map_defaults.zoom - 1,\n minZoom: 5,\n maxZoom: 14\n });\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1489,"value":"{\n const colorStation = function(row) {\n const firstRideAtYear = (new Date(row.first_ride_at)).getFullYear();\n if (firstRideAtYear == station_min_year) {\n return [1, 152, 189, 200]\n } else if (firstRideAtYear <= station_min_year) {\n return [255, 255, 255, 200]\n } else {\n return [0, 0, 0, 200]\n }\n }\n const layer = new deckgl.ScatterplotLayer({\n data: most_popular_stations.objects(),\n pickable: true,\n opacity: 0.8,\n stroked: true,\n filled: true,\n radiusScale: 6,\n radiusMinPixels: 1,\n radiusMaxPixels: 100,\n lineWidthMinPixels: 1,\n getPosition: d => [d.lng, d.lat],\n getRadius: d => 10,\n getColor: colorStation,\n getFillColor: d => [127, 255, 255],\n getLineColor: d => [255, 127, 255]\n });\n\n stations_age_map.setProps({layers: [layer]});\n \n return layer;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W2f","stdlib":"1","titling":"auto"}} 2d:"$2c:body"