Function calcMarkerSize

src/traces/scatter/calc.js:223–257

(trace, serieslen)

}

function calcMarkerSize(trace, serieslen) {
    if(!subTypes.hasMarkers(trace)) return;

    // Treat size like x or y arrays --- Run d2c
    // this needs to go before ppad computation
    var marker = trace.marker;
    var sizeref = 1.6 * (trace.marker.sizeref || 1);
    var markerTrans;

    if(trace.marker.sizemode === 'area') {
        markerTrans = function(v) {
            return Math.max(Math.sqrt((v || 0) / sizeref), 3);
        };
    } else {
        markerTrans = function(v) {
            return Math.max((v || 0) / sizeref, 3);
        };
    }

    if(Lib.isArrayOrTypedArray(marker.size)) {
        // I tried auto-type but category and dates dont make much sense.
        var ax = {type: 'linear'};
        Axes.setConvert(ax);

        var s = ax.makeCalcdata(trace.marker, 'size');

        var sizeOut = new Array(serieslen);
        for(var i = 0; i < serieslen; i++) {
            sizeOut[i] = markerTrans(s[i]);
        }
        return sizeOut;
    } else {
        return markerTrans(marker.size);
    }
}

/**
 * mark the first scatter trace for each subplot