plotly.js/src/traces/bar/event_data.js

The open source javascript graphing library that powers plotly

'use strict';

module.exports = function eventData(out, pt, trace) {
    // standard cartesian event data
    out.x = 'xVal' in pt ? pt.xVal : pt.x;
    out.y = 'yVal' in pt ? pt.yVal : pt.y;
    if(pt.xa) out.xaxis = pt.xa;
    if(pt.ya) out.yaxis = pt.ya;

    if(trace.orientation === 'h') {
        out.label = out.y;
        out.value = out.x;
    } else {
        out.label = out.x;
        out.value = out.y;
    }

    return out;
};