<div id="map" style="height: 100%; width: 100%"></div>

<script src="../../dist/gridviz.js"></script>

<script src="https://cdn.jsdelivr.net/npm/d3-color@3"></script>

<script src="https://cdn.jsdelivr.net/npm/d3-interpolate@3"></script>

<script src="https://cdn.jsdelivr.net/npm/d3-scale-chromatic@3"></script>

<script>

//define map with initial view

const map = new gridviz.Map(document.getElementById('map'), {

x: 4500000,

y: 2900000,

z: 3000,

}).addZoomButtons()

//define dataset

const dataset = new gridviz.MultiResolutionDataset(

[1000, 2000, 5000, 10000, 20000, 50000, 100000],

(resolution) =>

new gridviz.TiledGrid(

map,

'https://raw.githubusercontent.com/jgaffuri/tiledgrids/main/data/europe/population2/' +

resolution +

'm/'

)

)

//define style

const style = new gridviz.ShapeColorSizeStyle({

color: (c, r, z, viewScale) => viewScale(c.TOT_P_2021),

viewScale: gridviz.viewScaleColor({

valueFunction: (c) => +c.TOT_P_2021,

colorScale: d3.interpolateYlOrRd,

stretching: gridviz.logarithmicScale(-7),

}),

})

//define legend

const legend = new gridviz.ColorLegend({

title: 'Population',

colorScale: d3.interpolateYlOrRd,

ticks: 4,

textScale: (t, vs) => vs?.invert(t),

tickFormat: Math.round,

})

//link legend to style

style.legends = [legend]

//add layer to map

map.layers = [new gridviz.GridLayer(dataset, [style])]

</script>