{
  "name": "adoption-rates-technology",
  "title": "Technology Adoption Rates (US)",
  "description": "Share of US households or population using key technologies over time: telephone, radio, television, personal computer, internet, mobile phone, smartphone. Each technology wave adopted faster than the last.",
  "status": "structured",
  "licenses": [
    {
      "name": "ODC-PDDL-1.0",
      "path": "http://opendatacommons.org/licenses/pddl/",
      "title": "Open Data Commons Public Domain Dedication and License v1.0"
    }
  ],
  "resources": [
    {
      "name": "adoption-rates",
      "title": "US Technology Adoption Rates (Long Format)",
      "path": "data/adoption_rates.csv",
      "mediatype": "text/csv"
    },
    {
      "name": "adoption-rates-wide",
      "title": "US Technology Adoption Rates (Wide Format)",
      "path": "data/adoption_rates_wide.csv",
      "mediatype": "text/csv"
    }
  ],
  "views": [
    {
      "name": "us-technology-adoption-over-time",
      "title": "US Technology Adoption Over Time",
      "resources": ["adoption-rates-wide"],
      "specType": "vega-lite",
      "spec": {
        "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
        "transform": [
          { "fold": ["telephone", "radio", "television", "personal-computer", "internet", "mobile-phone", "smartphone"], "as": ["technology", "raw_value"] },
          { "calculate": "toNumber(datum.raw_value)", "as": "value" },
          { "filter": "isValid(datum.value) && datum.value > 0" }
        ],
        "mark": { "type": "line", "strokeWidth": 2 },
        "encoding": {
          "x": { "field": "year", "type": "quantitative", "title": "Year", "axis": { "format": "d", "grid": false } },
          "y": { "field": "value", "type": "quantitative", "title": "Adoption (%)", "axis": { "grid": false } },
          "color": { "field": "technology", "type": "nominal", "legend": { "title": "Technology" } },
          "tooltip": [
            { "field": "technology", "type": "nominal", "title": "Technology" },
            { "field": "year", "type": "quantitative", "format": "d", "title": "Year" },
            { "field": "value", "type": "quantitative", "format": ".1f", "title": "Adoption (%)" }
          ]
        }
      }
    }
  ]
}