私はD3で多くのマップを作成しましたが、出力がそれほど小さくないこの問題はありませんでした。小さなgeojsonファイルが含まれていますが、他のさまざまなツール(e.g. here)を使用して簡単に表示できます。d3.geoPath()の投影を文書化されていないように設定する
投影がd3.geoPath()で正しく設定されていないようです。 The APIは、d3.geoPath()が投影引数をとることを指定していますが、このメソッドを使用して投影を設定しようとすると(下の例のように)、結果のマップは正しく投影されません。 d3.geoPath()。projection()メソッドを使用して投影を設定した後で、適切な結果が得られます。
これはドキュメントに記載されているエラーですか?何か不足していますか?
//setup and map parameters
var height = 300;
var width = 300;
var projection = d3.geoAlbers().scale(1000).translate([width/2, height/2]);
var path = d3.geoPath(projection);
//geoJSON data
var geojson =
{"type":"FeatureCollection","features":[
{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[-86.910592,33.536105],[-86.907192,33.542204999999996],[-86.90539199999999,33.541305],[-86.901608,33.543456],[-86.895692,33.548805],[-86.89249199999999,33.550404],[-86.888392,33.549304],[-86.879772,33.553267999999996],[-86.868549,33.553418],[-86.8651,33.557134999999995],[-86.856129,33.562064],[-86.85159499999999,33.559404],[-86.848891,33.559805],[-86.852991,33.552104],[-86.85519099999999,33.543904999999995],[-86.855694,33.538151],[-86.860817,33.53405],[-86.850509,33.535693],[-86.83124699999999,33.544767],[-86.827029,33.534708],[-86.82383999999999,33.533389],[-86.826703,33.528081],[-86.826807,33.521107],[-86.822808,33.514319],[-86.81474899999999,33.502386],[-86.81411899999999,33.500078],[-86.816041,33.496234],[-86.823825,33.488839],[-86.825743,33.485408],[-86.82772299999999,33.477393],[-86.828558,33.472626999999996],[-86.82791,33.46967],[-86.833503,33.467552999999995],[-86.839366,33.463845],[-86.841534,33.460941],[-86.842309,33.465699],[-86.849758,33.466302],[-86.861663,33.456759],[-86.869367,33.4514],[-86.87749699999999,33.449382],[-86.884293,33.445453],[-86.88948599999999,33.441072999999996],[-86.890131,33.438437],[-86.899491,33.434508],[-86.908391,33.429308],[-86.922929,33.415512],[-86.925484,33.419897999999996],[-86.93114299999999,33.422801],[-86.93749199999999,33.421608],[-86.945352,33.425982999999995],[-86.946468,33.428407],[-86.937809,33.435314],[-86.925764,33.449968999999996],[-86.920859,33.454651999999996],[-86.92215,33.456643],[-86.927679,33.453849999999996],[-86.932965,33.449332],[-86.935435,33.446132],[-86.94133699999999,33.442150999999996],[-86.941301,33.445651999999995],[-86.942842,33.450103],[-86.946817,33.45017],[-86.95131599999999,33.45181],[-86.950279,33.458104],[-86.945494,33.463234],[-86.929693,33.478538],[-86.92935299999999,33.479858],[-86.920255,33.492874],[-86.92450699999999,33.493904],[-86.93110999999999,33.496843],[-86.933543,33.494935999999996],[-86.94144999999999,33.494743],[-86.944717,33.495934],[-86.946237,33.502279],[-86.946224,33.506071],[-86.941811,33.507621],[-86.937693,33.512206],[-86.92634,33.512381999999995],[-86.917255,33.517139],[-86.915435,33.519832],[-86.908779,33.518958999999995],[-86.903385,33.516537],[-86.898659,33.520165999999996],[-86.894459,33.526136],[-86.896992,33.530504],[-86.910592,33.536105]]]},"properties":{"a":1}}
]}
var svg = d3.select("#map");
svg.selectAll("path").data(geojson.features).enter().append("path").attr("fill","red").attr("d", path);
<script src="https://d3js.org/d3.v4.min.js"></script>
<svg height="300px" width="300px" id="map"> </svg>
私はAPIを再読み込みする必要がありますが、var path = d3.geoPath()。projection(projection)を設定すると問題が修正されます。 –