Open zhang867dong opened 3 years ago
如源代码中出现的rangeArray[i - 1] + step,
`function computeBins(data, optOrMethod) { var opt = typeof optOrMethod === 'string' ? { method: optOrMethod } : (optOrMethod || {});
var threshold = opt.method == null ? thresholdMethod.squareRoot : thresholdMethod[opt.method]; var dimensions = normalizeDimensions(opt.dimensions); var values = dataPreprocess(data, { dimensions: dimensions, toOneDimensionArray: true }); var maxValue = max(values); var minValue = min(values); var binsNumber = threshold(values, minValue, maxValue); var tickStepResult = tickStep(minValue, maxValue, binsNumber); var step = tickStepResult.step; var toFixedPrecision = tickStepResult.toFixedPrecision; // return the xAxis coordinate for each bins, except the end point of the value var rangeArray = range( // use function toFixed() to avoid data like '0.700000001' +((Math.ceil(minValue / step) * step).toFixed(toFixedPrecision)), +((Math.floor(maxValue / step) * step).toFixed(toFixedPrecision)), step, toFixedPrecision ); var len = rangeArray.length; var bins = new Array(len + 1); for (var i = 0; i <= len; i++) { bins[i] = {}; bins[i].sample = []; bins[i].x0 = i > 0 ? rangeArray[i - 1] : (rangeArray[i] - minValue) === step ? minValue : _(rangeArray[i] - step);_ bins[i].x1 = i < len ? rangeArray[i] : (maxValue - rangeArray[i-1]) === step ? maxValue : _rangeArray[i - 1] + step;_ } for (var i = 0; i < values.length; i++) { if (minValue <= values[i] && values[i] <= maxValue) { bins[bisect(rangeArray, values[i], 0, len)].sample.push(values[i]); } } var data = map(bins, function (bin) { // use function toFixed() to avoid data like '6.5666638489' return [ +((bin.x0 + bin.x1) / 2).toFixed(toFixedPrecision), bin.sample.length, bin.x0, bin.x1, bin.x0 + ' - ' + bin.x1 ]; }); var customData = map(bins, function (bin) { return [bin.x0, bin.x1, bin.sample.length]; }); return { bins: bins, data: data, customData: customData }; }`
如源代码中出现的rangeArray[i - 1] + step,
`function computeBins(data, optOrMethod) { var opt = typeof optOrMethod === 'string' ? { method: optOrMethod } : (optOrMethod || {});