src/component/marker/MarkLineView.js

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define(function (require) {

    var zrUtil = require('zrender/core/util');
    var List = require('../../data/List');
    var numberUtil = require('../../util/number');

    var markerHelper = require('./markerHelper');

    var LineDraw = require('../../chart/helper/LineDraw');

    var markLineTransform = function (seriesModel, coordSys, mlModel, item) {
        var data = seriesModel.getData();
        // Special type markLine like 'min', 'max', 'average'
        var mlType = item.type;

        if (!zrUtil.isArray(item)
            && (
                mlType === 'min' || mlType === 'max' || mlType === 'average'
                // In case
                // data: [{
                //   yAxis: 10
                // }]
                || (item.xAxis != null || item.yAxis != null)
            )
        ) {
            var valueAxis;
            var valueDataDim;
            var value;

            if (item.yAxis != null || item.xAxis != null) {
                valueDataDim = item.yAxis != null ? 'y' : 'x';
                valueAxis = coordSys.getAxis(valueDataDim);

                value = zrUtil.retrieve(item.yAxis, item.xAxis);
            }
            else {
                var axisInfo = markerHelper.getAxisInfo(item, data, coordSys, seriesModel);
                valueDataDim = axisInfo.valueDataDim;
                valueAxis = axisInfo.valueAxis;
                value = markerHelper.numCalculate(data, valueDataDim, mlType);
            }
            var valueIndex = valueDataDim === 'x' ? 0 : 1;
            var baseIndex = 1 - valueIndex;

            var mlFrom = zrUtil.clone(item);
            var mlTo = {};

            mlFrom.type = null;

            mlFrom.coord = [];
            mlTo.coord = [];
            mlFrom.coord[baseIndex] = -Infinity;
            mlTo.coord[baseIndex] = Infinity;

            var precision = mlModel.get('precision');
            if (precision >= 0) {
                value = +value.toFixed(precision);
            }

            mlFrom.coord[valueIndex] = mlTo.coord[valueIndex] = value;