Function converDataValue

libs/echarts/echarts.simple.js:23335–23363

* This helper method convert value in data. * @param {string|number|Date} value * @param {Object|string} [dimInfo] If string (like 'x'), dimType defaults 'number'. * If "dimInfo.ordinalParseAndSave", ordinal value can be parsed.

(value, dimInfo)

 *        If "dimInfo.ordinalParseAndSave", ordinal value can be parsed.
 */
function converDataValue(value, dimInfo) {
    // Performance sensitive.
    var dimType = dimInfo && dimInfo.type;
    if (dimType === 'ordinal') {
        // If given value is a category string
        var ordinalMeta = dimInfo && dimInfo.ordinalMeta;
        return ordinalMeta
            ? ordinalMeta.parseAndCollect(value)
            : value;
    }

    if (dimType === 'time'
        // spead up when using timestamp
        && typeof value !== 'number'
        && value != null
        && value !== '-'
    ) {
        value = +parseDate(value);
    }

    // dimType defaults 'number'.
    // If dimType is not ordinal and value is null or undefined or NaN or '-',
    // parse to NaN.
    return (value == null || value === '')
        ? NaN
        // If string (like '-'), using '+' parse to NaN
        // If object, also parse to NaN
        : +value;
}

// ??? FIXME can these logic be more neat: getRawValue, getRawDataItem,
// Consider persistent.