_map.qmd

```{ojs}
import {interval} from '@mootari/range-slider' // two ended slider
```

```{ojs}
//| panel: input

viewof map_var = Inputs.select(cont_opts, {value: Array.from(cont_opts.values())[1], label: "Measure"})
viewof years = interval([d3.min(data.year), d3.max(data.year)], {step: 1, label: "Years"})
viewof bins = Inputs.range([2, 10], {value: 5, step: 1, label: "Bins"})
```

```{ojs}
world = FileAttachment("countries-110m.json").json()
countries = topojson.feature(world, world.objects.countries)
//land = topojson.feature(world, world.objects.land)

slim3 = FileAttachment("slim-3.json").json()
codes = new Map(slim3.map(d => [d["country-code"], d["alpha-3"]]))

td = transpose(data)
tdf = td.filter(d => d.year >= years[0] && d.year <= years[1])
dg = d3.rollup(tdf, v => d3.mean(v, d => d[map_var]), d => d.code)

viewof map = Plot.plot({
  style: { fontFamily: "var(--sans-serif)" },
  projection: "equal-earth",
  marks: [
    Plot.sphere(),
    Plot.graticule(),
    Plot.geo(countries, Plot.centroid({
      stroke: "black",
      strokeWidth: 0.5,
      fill: d => dg.get(codes.get(d.id)),
      tip: true,
      channels: {country: d => d.properties.name}
    })),
  ],
  color: {
    type: "quantile",
    n: bins,
    scheme: "blues", 
    unknown: "#ddd",
    legend: true, 
    label: "Mean " + map_var,
    tickFormat: d => Math.round(d)
  }
})

html`<div style="display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: center;">
 <div style="flex-basis: 50%"> ${viewof map} </div>
</div>`
```