Function handleGeoDefaults

src/plots/geo/layout_defaults.js:23–223

(geoLayoutIn, geoLayoutOut, coerce, opts)

};

function handleGeoDefaults(geoLayoutIn, geoLayoutOut, coerce, opts) {
    var subplotData = getSubplotData(opts.fullData, 'geo', opts.id);
    var traceIndices = subplotData.map(function(t) { return t.index; });

    var resolution = coerce('resolution');
    var scope = coerce('scope');
    var scopeParams = constants.scopeDefaults[scope];

    var projType = coerce('projection.type', scopeParams.projType);
    var isAlbersUsa = geoLayoutOut._isAlbersUsa = projType === 'albers usa';

    // no other scopes are allowed for 'albers usa' projection
    if(isAlbersUsa) scope = geoLayoutOut.scope = 'usa';

    var isScoped = geoLayoutOut._isScoped = (scope !== 'world');
    var isSatellite = geoLayoutOut._isSatellite = projType === 'satellite';
    var isConic = geoLayoutOut._isConic = projType.indexOf('conic') !== -1 || projType === 'albers';
    var isClipped = geoLayoutOut._isClipped = !!constants.lonaxisSpan[projType];

    if(geoLayoutIn.visible === false) {
        // should override template.layout.geo.show* - see issue 4482

        // make a copy
        var newTemplate = Lib.extendDeep({}, geoLayoutOut._template);

        // override show*
        newTemplate.showcoastlines = false;
        newTemplate.showcountries = false;
        newTemplate.showframe = false;
        newTemplate.showlakes = false;
        newTemplate.showland = false;
        newTemplate.showocean = false;
        newTemplate.showrivers = false;
        newTemplate.showsubunits = false;
        if(newTemplate.lonaxis) newTemplate.lonaxis.showgrid = false;
        if(newTemplate.lataxis) newTemplate.lataxis.showgrid = false;

        // set ref to copy
        geoLayoutOut._template = newTemplate;
    }
    var visible = coerce('visible');

    var show;
    for(var i = 0; i < axesNames.length; i++) {
        var axisName = axesNames[i];
        var dtickDflt = [30, 10][i];
        var rangeDflt;

        if(isScoped) {
            rangeDflt = scopeParams[axisName + 'Range'];
        } else {
            var dfltSpans = constants[axisName + 'Span'];
            var hSpan = (dfltSpans[projType] || dfltSpans['*']) / 2;
            var rot = coerce(
                'projection.rotation.' + axisName.slice(0, 3),
                scopeParams.projRotate[i]
            );
            rangeDflt = [rot - hSpan, rot + hSpan];