Function doGuessOrdinal

libs/echarts/echarts-en.simple.js:21117–21216

(
    data, sourceFormat, seriesLayoutBy, dimensionsDefine, startIndex, dimIndex
)

// dimIndex may be overflow source data.
// return {BE_ORDINAL}
function doGuessOrdinal(
    data, sourceFormat, seriesLayoutBy, dimensionsDefine, startIndex, dimIndex
) {
    var result;
    // Experience value.
    var maxLoop = 5;

    if (isTypedArray(data)) {
        return BE_ORDINAL.Not;
    }

    // When sourceType is 'objectRows' or 'keyedColumns', dimensionsDefine
    // always exists in source.
    var dimName;
    var dimType;
    if (dimensionsDefine) {
        var dimDefItem = dimensionsDefine[dimIndex];
        if (isObject$1(dimDefItem)) {
            dimName = dimDefItem.name;
            dimType = dimDefItem.type;
        }
        else if (isString(dimDefItem)) {
            dimName = dimDefItem;
        }
    }

    if (dimType != null) {
        return dimType === 'ordinal' ? BE_ORDINAL.Must : BE_ORDINAL.Not;
    }

    if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS) {
        if (seriesLayoutBy === SERIES_LAYOUT_BY_ROW) {
            var sample = data[dimIndex];
            for (var i = 0; i < (sample || []).length && i < maxLoop; i++) {
                if ((result = detectValue(sample[startIndex + i])) != null) {
                    return result;
                }
            }
        }
        else {
            for (var i = 0; i < data.length && i < maxLoop; i++) {
                var row = data[startIndex + i];
                if (row && (result = detectValue(row[dimIndex])) != null) {
                    return result;
                }
            }
        }
    }
    else if (sourceFormat === SOURCE_FORMAT_OBJECT_ROWS) {
        if (!dimName) {
            return BE_ORDINAL.Not;
        }
        for (var i = 0; i < data.length && i < maxLoop; i++) {
            var item = data[i];
            if (item && (result = detectValue(item[dimName])) != null) {
                return result;
            }
        }