plotly.js/src/traces/choroplethmapbox/defaults.js

The open source javascript graphing library that powers plotly

'use strict';

var Lib = require('../../lib');
var colorscaleDefaults = require('../../components/colorscale/defaults');
var attributes = require('./attributes');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var locations = coerce('locations');
    var z = coerce('z');
    var geojson = coerce('geojson');

    if (
        !Lib.isArrayOrTypedArray(locations) ||
        !locations.length ||
        !Lib.isArrayOrTypedArray(z) ||
        !z.length ||
        !((typeof geojson === 'string' && geojson !== '') || Lib.isPlainObject(geojson))
    ) {
        traceOut.visible = false;
        return;
    }

    coerce('featureidkey');

    traceOut._length = Math.min(locations.length, z.length);

    coerce('below');

    coerce('text');
    coerce('hovertext');
    coerce('hovertemplate');
    coerce('hovertemplatefallback');

    var mlw = coerce('marker.line.width');
    if (mlw) coerce('marker.line.color');
    coerce('marker.opacity');

    colorscaleDefaults(traceIn, traceOut, layout, coerce, { prefix: '', cLetter: 'z' });

    Lib.coerceSelectionMarkerOpacity(traceOut, coerce);
};