/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/* global Float32Array */
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import {subPixelOptimize} from '../../util/graphic';
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import createRenderPlanner from '../helper/createRenderPlanner';
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import {parsePercent} from '../../util/number';
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import {retrieve2} from 'zrender/src/core/util';
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var LargeArr = typeof Float32Array !== 'undefined' ? Float32Array : Array;
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export default {
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seriesType: 'candlestick',
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plan: createRenderPlanner(),
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reset: function (seriesModel) {
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var coordSys = seriesModel.coordinateSystem;
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var data = seriesModel.getData();
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var candleWidth = calculateCandleWidth(seriesModel, data);
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var cDimIdx = 0;
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var vDimIdx = 1;
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var coordDims = ['x', 'y'];
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var cDim = data.mapDimension(coordDims[cDimIdx]);
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var vDims = data.mapDimension(coordDims[vDimIdx], true);
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var openDim = vDims[0];
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var closeDim = vDims[1];
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var lowestDim = vDims[2];
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var highestDim = vDims[3];
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data.setLayout({
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candleWidth: candleWidth,
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// The value is experimented visually.
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isSimpleBox: candleWidth <= 1.3
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});
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if (cDim == null || vDims.length < 4) {
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return;
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}
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return {
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progress: seriesModel.pipelineContext.large
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? largeProgress : normalProgress
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};
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function normalProgress(params, data) {
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var dataIndex;
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while ((dataIndex = params.next()) != null) {
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var axisDimVal = data.get(cDim, dataIndex);
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var openVal = data.get(openDim, dataIndex);
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var closeVal = data.get(closeDim, dataIndex);
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var lowestVal = data.get(lowestDim, dataIndex);
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var highestVal = data.get(highestDim, dataIndex);
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var ocLow = Math.min(openVal, closeVal);
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var ocHigh = Math.max(openVal, closeVal);
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var ocLowPoint = getPoint(ocLow, axisDimVal);
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var ocHighPoint = getPoint(ocHigh, axisDimVal);
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var lowestPoint = getPoint(lowestVal, axisDimVal);
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var highestPoint = getPoint(highestVal, axisDimVal);
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var ends = [];
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addBodyEnd(ends, ocHighPoint, 0);
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addBodyEnd(ends, ocLowPoint, 1);
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ends.push(
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subPixelOptimizePoint(highestPoint),
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subPixelOptimizePoint(ocHighPoint),
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subPixelOptimizePoint(lowestPoint),
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subPixelOptimizePoint(ocLowPoint)
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);
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data.setItemLayout(dataIndex, {
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sign: getSign(data, dataIndex, openVal, closeVal, closeDim),
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initBaseline: openVal > closeVal
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? ocHighPoint[vDimIdx] : ocLowPoint[vDimIdx], // open point.
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ends: ends,
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brushRect: makeBrushRect(lowestVal, highestVal, axisDimVal)
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});
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}
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function getPoint(val, axisDimVal) {
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var p = [];
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p[cDimIdx] = axisDimVal;
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p[vDimIdx] = val;
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return (isNaN(axisDimVal) || isNaN(val))
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? [NaN, NaN]
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: coordSys.dataToPoint(p);
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}
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function addBodyEnd(ends, point, start) {
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var point1 = point.slice();
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var point2 = point.slice();
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point1[cDimIdx] = subPixelOptimize(
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point1[cDimIdx] + candleWidth / 2, 1, false
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);
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point2[cDimIdx] = subPixelOptimize(
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point2[cDimIdx] - candleWidth / 2, 1, true
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);
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start
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? ends.push(point1, point2)
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: ends.push(point2, point1);
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}
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function makeBrushRect(lowestVal, highestVal, axisDimVal) {
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var pmin = getPoint(lowestVal, axisDimVal);
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var pmax = getPoint(highestVal, axisDimVal);
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pmin[cDimIdx] -= candleWidth / 2;
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pmax[cDimIdx] -= candleWidth / 2;
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return {
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x: pmin[0],
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y: pmin[1],
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width: vDimIdx ? candleWidth : pmax[0] - pmin[0],
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height: vDimIdx ? pmax[1] - pmin[1] : candleWidth
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};
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}
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function subPixelOptimizePoint(point) {
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point[cDimIdx] = subPixelOptimize(point[cDimIdx], 1);
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return point;
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}
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}
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function largeProgress(params, data) {
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// Structure: [sign, x, yhigh, ylow, sign, x, yhigh, ylow, ...]
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var points = new LargeArr(params.count * 5);
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var offset = 0;
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var point;
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var tmpIn = [];
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var tmpOut = [];
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var dataIndex;
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while ((dataIndex = params.next()) != null) {
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var axisDimVal = data.get(cDim, dataIndex);
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var openVal = data.get(openDim, dataIndex);
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var closeVal = data.get(closeDim, dataIndex);
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var lowestVal = data.get(lowestDim, dataIndex);
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var highestVal = data.get(highestDim, dataIndex);
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if (isNaN(axisDimVal) || isNaN(lowestVal) || isNaN(highestVal)) {
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points[offset++] = NaN;
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offset += 4;
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continue;
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}
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points[offset++] = getSign(data, dataIndex, openVal, closeVal, closeDim);
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tmpIn[cDimIdx] = axisDimVal;
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tmpIn[vDimIdx] = lowestVal;
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point = coordSys.dataToPoint(tmpIn, null, tmpOut);
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points[offset++] = point ? point[0] : NaN;
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points[offset++] = point ? point[1] : NaN;
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tmpIn[vDimIdx] = highestVal;
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point = coordSys.dataToPoint(tmpIn, null, tmpOut);
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points[offset++] = point ? point[1] : NaN;
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}
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data.setLayout('largePoints', points);
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}
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}
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};
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function getSign(data, dataIndex, openVal, closeVal, closeDim) {
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var sign;
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if (openVal > closeVal) {
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sign = -1;
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}
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else if (openVal < closeVal) {
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sign = 1;
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}
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else {
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sign = dataIndex > 0
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// If close === open, compare with close of last record
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? (data.get(closeDim, dataIndex - 1) <= closeVal ? 1 : -1)
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// No record of previous, set to be positive
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: 1;
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}
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return sign;
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}
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function calculateCandleWidth(seriesModel, data) {
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var baseAxis = seriesModel.getBaseAxis();
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var extent;
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var bandWidth = baseAxis.type === 'category'
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? baseAxis.getBandWidth()
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: (
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extent = baseAxis.getExtent(),
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Math.abs(extent[1] - extent[0]) / data.count()
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);
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var barMaxWidth = parsePercent(
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retrieve2(seriesModel.get('barMaxWidth'), bandWidth),
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bandWidth
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);
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var barMinWidth = parsePercent(
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retrieve2(seriesModel.get('barMinWidth'), 1),
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bandWidth
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);
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var barWidth = seriesModel.get('barWidth');
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return barWidth != null
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? parsePercent(barWidth, bandWidth)
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// Put max outer to ensure bar visible in spite of overlap.
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: Math.max(Math.min(bandWidth / 2, barMaxWidth), barMinWidth);
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}
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