| | |
| | | |
| | | import java.math.BigDecimal; |
| | | import java.util.ArrayList; |
| | | import java.util.Collections; |
| | | import java.util.List; |
| | | |
| | | /** |
| | |
| | | * 计算MACD指标 |
| | | * |
| | | * @param closePrices 收盘价列表(使用BigDecimal确保计算精度) |
| | | * @param shortPeriod 短期EMA周期(通常为12) |
| | | * @param longPeriod 长期EMA周期(通常为26) |
| | | * @param signalPeriod DEA的周期(通常为9) |
| | | * @param fastlen 短期EMA周期(通常为12) |
| | | * @param slowlen 长期EMA周期(通常为26) |
| | | * @param siglen DEA的周期(通常为9) |
| | | * @return 包含MACD各部分数据的PriceData列表 |
| | | * @throws IllegalArgumentException 如果数据点不足或参数无效 |
| | | */ |
| | | public static MACDResult calculateMACD(List<BigDecimal> closePrices, int shortPeriod, int longPeriod, int signalPeriod) { |
| | | public static MACDResult calculateMACD(List<BigDecimal> closePrices, int fastlen, int slowlen, int siglen) { |
| | | // 参数校验:确保数据点足够 |
| | | if (closePrices == null || closePrices.isEmpty()) { |
| | | throw new IllegalArgumentException("Close prices list cannot be null or empty."); |
| | | } |
| | | if (shortPeriod <= 0 || longPeriod <= 0 || signalPeriod <= 0) { |
| | | if (fastlen <= 0 || slowlen <= 0 || siglen <= 0) { |
| | | throw new IllegalArgumentException("All periods must be positive integers."); |
| | | } |
| | | if (shortPeriod >= longPeriod) { |
| | | throw new IllegalArgumentException("Short period must be less than long period."); |
| | | if (fastlen >= slowlen) { |
| | | throw new IllegalArgumentException("Fast period must be less than slow period."); |
| | | } |
| | | if (closePrices.size() < Math.max(shortPeriod, longPeriod)) { |
| | | if (closePrices.size() < Math.max(fastlen, slowlen)) { |
| | | throw new IllegalArgumentException("Insufficient data points for the specified periods."); |
| | | } |
| | | |
| | | // 1. 计算短期和长期EMA(使用SMA作为初始值,提高计算准确性) |
| | | List<BigDecimal> emaShort = EMACalculator.calculateEMA(closePrices, shortPeriod, true); |
| | | List<BigDecimal> emaLong = EMACalculator.calculateEMA(closePrices, longPeriod, true); |
| | | // 反转数据,确保从旧到新处理(因为用户提供的数据是从新到旧) |
| | | List<BigDecimal> prices = new ArrayList<>(closePrices); |
| | | Collections.reverse(prices); |
| | | |
| | | // 2. 确定公共有效起始点(从较长周期的EMA开始计算) |
| | | int startIdx = Math.max(shortPeriod, longPeriod) - 1; // 因为EMA从第period个数据点开始有效 |
| | | int validLength = closePrices.size() - startIdx; // 有效数据点数量 |
| | | // 1. 计算快速EMA和慢速EMA,使用SMA作为初始值 |
| | | // 当initialSMA=true时,EMA列表长度为prices.size() - period + 1 |
| | | List<BigDecimal> fastEma = EMACalculator.calculateEMA(prices, fastlen, true); |
| | | List<BigDecimal> slowEma = EMACalculator.calculateEMA(prices, slowlen, true); |
| | | |
| | | // 3. 计算DIF(仅在有效区间内计算) |
| | | List<BigDecimal> difValues = new ArrayList<>(validLength); |
| | | for (int i = 0; i < validLength; i++) { |
| | | // 计算EMA的有效索引 |
| | | int idxEmaShort = startIdx - shortPeriod + 1 + i; // 短期EMA的当前索引 |
| | | int idxEmaLong = startIdx - longPeriod + 1 + i; // 长期EMA的当前索引 |
| | | |
| | | // DIF = 短期EMA - 长期EMA |
| | | BigDecimal dif = emaShort.get(idxEmaShort).subtract(emaLong.get(idxEmaLong)); |
| | | difValues.add(dif); |
| | | // 2. 计算MACD线(快速EMA减去慢速EMA) |
| | | List<BigDecimal> macdLine = new ArrayList<>(); |
| | | // EMA列表的起始索引与价格列表的对应关系 |
| | | int slowEmaStartIdx = slowlen - 1; // slowEma中第一个有效值对应的价格索引 |
| | | int fastEmaStartIdx = fastlen - 1; // fastEma中第一个有效值对应的价格索引 |
| | | |
| | | for (int i = 0; i < prices.size(); i++) { |
| | | if (i < slowEmaStartIdx) { |
| | | // 在慢速EMA开始有效之前,MACD线值为0 |
| | | macdLine.add(BigDecimal.ZERO); |
| | | } else { |
| | | // MACD线 = 快速EMA - 慢速EMA |
| | | // 需要将价格索引转换为EMA列表索引 |
| | | int slowEmaIdx = i - slowEmaStartIdx; |
| | | int fastEmaIdx = i - fastEmaStartIdx; |
| | | BigDecimal macdValue = fastEma.get(fastEmaIdx).subtract(slowEma.get(slowEmaIdx)); |
| | | macdLine.add(macdValue); |
| | | } |
| | | } |
| | | |
| | | // 4. 计算DEA(基于有效DIF数据的EMA),欧意平台使用SMA作为初始值 |
| | | List<BigDecimal> deaValues = EMACalculator.calculateEMA(difValues, signalPeriod, true); |
| | | // 3. 计算信号线(MACD线的siglen周期EMA),使用SMA作为初始值 |
| | | List<BigDecimal> signalLine = EMACalculator.calculateEMA(macdLine, siglen, true); |
| | | |
| | | // 5. 构建并填充结果(包含所有MACD数据) |
| | | List<PriceData> result = new ArrayList<>(deaValues.size()); |
| | | // 4. 计算柱状图(MACD线与信号线的差值) |
| | | List<BigDecimal> histogram = new ArrayList<>(); |
| | | int signalLineStartIdx = siglen - 1; // signalLine中第一个有效值对应的macdLine索引 |
| | | |
| | | for (int i = 0; i < macdLine.size(); i++) { |
| | | if (i < slowEmaStartIdx + signalLineStartIdx) { |
| | | // 在信号线开始有效之前,柱状图值为0 |
| | | histogram.add(BigDecimal.ZERO); |
| | | } else { |
| | | // 将macdLine索引转换为signalLine索引 |
| | | int signalLineIdx = i - signalLineStartIdx; |
| | | // 柱状图 = (MACD线 - 信号线) * 2(放大信号) |
| | | BigDecimal histValue = macdLine.get(i).subtract(signalLine.get(signalLineIdx)).multiply(new BigDecimal("2")); |
| | | histogram.add(histValue); |
| | | } |
| | | } |
| | | |
| | | // 从第一个DEA值开始构建结果 |
| | | for (int i = 0; i < deaValues.size(); i++) { |
| | | int closeIdx = startIdx + i; // 对应原收盘价列表的索引 |
| | | |
| | | // 创建价格数据对象 |
| | | PriceData data = new PriceData(closePrices.get(closeIdx)); |
| | | |
| | | // 设置EMA(使用正确的偏移位置) |
| | | data.setEmaShort(emaShort.get(closeIdx - shortPeriod + 1)); |
| | | data.setEmaLong(emaLong.get(closeIdx - longPeriod + 1)); |
| | | |
| | | // 设置DIF、DEA和MACD柱状图 |
| | | data.setDif(difValues.get(i)); |
| | | data.setDea(deaValues.get(i)); // DEA索引直接对应 |
| | | data.setMacdHist(data.getDif().subtract(data.getDea()).multiply(BigDecimal.valueOf(2))); // MACD柱状图 = (DIF - DEA) × 2 (欧意平台标准) |
| | | |
| | | // 5. 构建结果数据 |
| | | List<PriceData> result = new ArrayList<>(); |
| | | int startIndex = slowEmaStartIdx + signalLineStartIdx; // 从信号线开始有效的位置开始 |
| | | |
| | | for (int i = startIndex; i < prices.size(); i++) { |
| | | PriceData data = new PriceData(prices.get(i)); |
| | | |
| | | // 设置EMA值(需要转换索引) |
| | | int fastEmaIdx = i - fastEmaStartIdx; |
| | | int slowEmaIdx = i - slowEmaStartIdx; |
| | | data.setEmaShort(fastEma.get(fastEmaIdx)); |
| | | data.setEmaLong(slowEma.get(slowEmaIdx)); |
| | | |
| | | // 设置MACD指标值 |
| | | data.setDif(macdLine.get(i)); |
| | | data.setDea(signalLine.get(i - signalLineStartIdx)); |
| | | data.setMacdHist(histogram.get(i)); |
| | | |
| | | result.add(data); |
| | | } |
| | | |
| | | // 反转结果列表,恢复为从新到旧的顺序 |
| | | Collections.reverse(result); |
| | | |
| | | |
| | | return new MACDResult(result, startIdx); |
| | | return new MACDResult(result, startIndex); |
| | | } |
| | | |
| | | /** |
| | |
| | | * @return 包含MACD各部分数据的PriceData列表 |
| | | */ |
| | | public static MACDResult calculateMACD(List<BigDecimal> closePrices) { |
| | | // 默认参数:短期周期12,长期周期26,信号周期9 |
| | | // 默认参数:快速周期12,慢速周期26,信号周期9 |
| | | return calculateMACD(closePrices, 12, 26, 9); |
| | | } |
| | | |
| | |
| | | return false; |
| | | } |
| | | |
| | | // 反转原始价格列表,确保从旧到新处理 |
| | | List<BigDecimal> prices = new ArrayList<>(closePrices); |
| | | Collections.reverse(prices); |
| | | |
| | | // 找到最近的价格高点和对应的DIF值 |
| | | int recentPriceHighIdx = IndicatorUtils.findRecentHighIndex(closePrices, startIdx); |
| | | int recentPriceHighIdx = IndicatorUtils.findRecentHighIndex(prices, startIdx); |
| | | if (recentPriceHighIdx < startIdx + 2 || recentPriceHighIdx == -1) { |
| | | return false; |
| | | } |
| | | |
| | | // 找到之前的价格高点和对应的DIF值 |
| | | int previousPriceHighIdx = IndicatorUtils.findPreviousHighIndex(closePrices, startIdx, recentPriceHighIdx); |
| | | int previousPriceHighIdx = IndicatorUtils.findPreviousHighIndex(prices, startIdx, recentPriceHighIdx); |
| | | if (previousPriceHighIdx < startIdx || previousPriceHighIdx == -1) { |
| | | return false; |
| | | } |
| | |
| | | return false; |
| | | } |
| | | |
| | | BigDecimal recentPrice = closePrices.get(recentPriceHighIdx); |
| | | BigDecimal previousPrice = closePrices.get(previousPriceHighIdx); |
| | | BigDecimal recentPrice = prices.get(recentPriceHighIdx); |
| | | BigDecimal previousPrice = prices.get(previousPriceHighIdx); |
| | | BigDecimal recentDif = macdData.get(recentDifIdx).getDif(); |
| | | BigDecimal previousDif = macdData.get(previousDifIdx).getDif(); |
| | | |
| | |
| | | return false; |
| | | } |
| | | |
| | | // 反转原始价格列表,确保从旧到新处理 |
| | | List<BigDecimal> prices = new ArrayList<>(closePrices); |
| | | Collections.reverse(prices); |
| | | |
| | | // 找到最近的价格低点和对应的DIF值 |
| | | int recentPriceLowIdx = IndicatorUtils.findRecentLowIndex(closePrices, startIdx); |
| | | int recentPriceLowIdx = IndicatorUtils.findRecentLowIndex(prices, startIdx); |
| | | if (recentPriceLowIdx < startIdx + 2 || recentPriceLowIdx == -1) { |
| | | return false; |
| | | } |
| | | |
| | | // 找到之前的价格低点和对应的DIF值 |
| | | int previousPriceLowIdx = IndicatorUtils.findPreviousLowIndex(closePrices, startIdx, recentPriceLowIdx); |
| | | int previousPriceLowIdx = IndicatorUtils.findPreviousLowIndex(prices, startIdx, recentPriceLowIdx); |
| | | if (previousPriceLowIdx < startIdx || previousPriceLowIdx == -1) { |
| | | return false; |
| | | } |
| | |
| | | return false; |
| | | } |
| | | |
| | | BigDecimal recentPrice = closePrices.get(recentPriceLowIdx); |
| | | BigDecimal previousPrice = closePrices.get(previousPriceLowIdx); |
| | | BigDecimal recentPrice = prices.get(recentPriceLowIdx); |
| | | BigDecimal previousPrice = prices.get(previousPriceLowIdx); |
| | | BigDecimal recentDif = macdData.get(recentDifIdx).getDif(); |
| | | BigDecimal previousDif = macdData.get(previousDifIdx).getDif(); |
| | | |
| | |
| | | return recentPrice.compareTo(previousPrice) < 0 && |
| | | recentDif.compareTo(previousDif) > 0; |
| | | } |
| | | } |
| | | } |