python - 通过保留最高值作为引用，标识点并返回该点的值

Question

我有一个数据，我需要通过保持最高值或峰值作为引用来返回低值。
样本数据:

A=['6452', '6444', '6452', '6456', '6455', '6465', '6456', '6442', '6449', '6452', '6455', '6465', '6463', '6452', '6459', '6470', '6456', '6435', '6438', '6441', '6438', '6448', '6451', '6439', '6449', '6472', '6483', '6503', '6531', '6524', '6523', '6538', '6550', '6534', '6537', '6554', '6540', '6538', '6553', '6558', '6568', '6588', '6609', '6615', '6616', '6625', '6628', '6633', '6628', '6612', '6605', '6605', '6599', '6587', '6588', '6589', '6584', '6592', '6592', '6571', '6555', '6551', '6533', '6521', '6517', '6502', '6493', '6476', '6473', '6469', '6455', '6463', '6462', '6438', '6424', '6428', '6417', '6400', '6404', '6398', '6398', '6417', '6425', '6422', '6429', '6448', '6435', '6424', '6434', '6439', '6431', '6429', '6418', '6407', '6412', '6415', '6407', '6412', '6424', '6415', '6403', '6417', '6425', '6424', '6425', '6428', '6427', '6432', '6455', '6442', '6420', '6446', '6503', '6558', '6654', '6748', '6841', '6945', '7053', '7160', '7229', '7237', '7150', '7062', 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'6444', '6434', '6400', '6391', '6404', '6391', '6379', '6370', '6363', '6364', '6373', '6370', '6364', '6362', '6370', '6371', '6370', '6384', '6379', '6357', '6364', '6381', '6369', '6356', '6369', '6369', '6366', '6367', '6360', '6362', '6386', '6393', '6381', '6371', '6377', '6379', '6377', '6383', '6373', '6357', '6364', '6376', '6380', '6362', '6377', '6383', '6388', '6400', '6401', '6373', '6383', '6407', '6404', '6400', '6400', '6383', '6398', '6407', '6410', '6394', '6397', '6408', '6407', '6401', '6394', '6390', '6401', '6414', '6404', '6393', '6408', '6420', '6408', '6407', '6407', '6398', '6407', '6408', '6405', '6394', '6401', '6405', '6404', '6400', '6410', '6405', '6401', '6408', '6414', '6397', '6397', '6396', '6398', '6400', '6408', '6410', '6407', '6412', '6424', '6421', '6422', '6411', '6414', '6412', '6420', '6407', '6408', '6412', '6412', '6401', '6407', '6412', '6417', '6420', '6424', '6410', '6417', '6422', '6410', '6393', '6412', '6425', '6407', '6403', '6412', '6408', '6405', '6407', '6414', '6410', '6420', '6429', '6415', '6410', '6412', '6408', '6412', '6421', '6410', '6408', '6418', '6412', '6401', '6398', '6410', '6405', '6398', '6411', '6412', '6401', '6407', '6412', '6412', '6417', '6425', '6412', '6418', '6428', '6429', '6412', '6417', '6420', '6420', '6425', '6427', '6418', '6414', '6415', '6415', '6412', '6421', '6424', '6417', '6420', '6449', '6466', '6469', '6478', '6500', '6506', '6523', '6536', '6531', '6541', '6554', '6545', '6533', '6537', '6534', '6538', '6558', '6572', '6562', '6572', '6585', '6578', '6582', '6595', '6615', '6604', '6602', '6596', '6589', '6585', '6595', '6608', '6612', '6605', '6589', '6571', '6575', '6558', '6541', '6529', '6519', '6504', '6499', '6495', '6495', '6480', '6482', '6483', '6478', '6485', '6485', '6452', '6437', '6439', '6435', '6431', '6444', '6458', '6465', '6469', '6479', '6482', '6476', '6489', '6496', '6475', '6470', '6475', '6472', '6478', '6478', '6469', '6475', '6492', '6516', '6503', '6510', '6523', '6514', '6513', '6516', '6503', '6512', '6537', '6538', '6513', '6502', '6512', '6555', '6612', '6711', '6802', '6885', '7003', '7107', '7205', '7308', '7368', '7303', '7178', '7136', '7070', '6862', '6663', '6540', '6415', '6288', '6203', '6176', '6189', '6210', '6214', '6238', '6287', '6333', '6371', '6414', '6459', '6485', '6506', '6521', '6526', '6553', '6570', '6577', '6585', '6588', '6588', '6591', '6591', '6609', '6616', '6620', '6629', '6636', '6622', '6625', '6611', '6598', '6587', '6594', '6592', '6599', '6596', '6606', '6613', '6630', '6647', '6640', '6646', '6652', '6629', '6616', '6625', '6625', '6622', '6640', '6643', '6650', '6639', '6647', '6660', '6669', '6669', '6666', '6646', '6637', '6650', '6636', '6639', '6662', '6654', '6656', '6677', '6694', '6688', '6701', '6714', '6712', '6708', '6722', '6722', '6722', '6728', '6729', '6731', '6744', '6749', '6755', '6765', '6792', '6795', '6778', '6790', '6807', '6809', '6799', '6814', '6824', '6819', '6830', '6850', '6864', '6872', '6891', '6887', '6902', '6929', '6928', '6923', '6929', '6939', '6937', '6937', '6940', '6939', '6959', '6966', '6959', '6957', '6963', '6952', '6953', '6970', '6980', '6969', '6956', '6969', '6969', '6973', '6974', '6970', '6962', '6947', '6936', '6911', '6887', '6882', '6870', '6847', '6840', '6820', '6799', '6790', '6792', '6779', '6769', '6753', '6738', '6722', '6712', '6701', '6691', '6681', '6683', '6671', '6666', '6660', '6643', '6652', '6652', '6640', '6622', '6613', '6623', '6623', '6620', '6609', '6618', '6620', '6623', '6628', '6618', '6620', '6625', '6619', '6616', '6626', '6633', '6632', '6635', '6633', '6636', '6650', '6663', '6653', '6647', '6643', '6639', '6646', '6654', '6662', '6652', '6656', '6667', '6660', '6663', '6673', '6660', '6652', '6663', '6662', '6642', '6640', '6650', '6645', '6653', '6676', '6673', '6657', '6667', '6670', '6676', '6686', '6679', '6653', '6656', '6664', '6650', '6652', '6656', '6650', '6643', '6645', '6649', '6646', '6649', '6653', '6645', '6662', '6662', '6650', '6643', '6649', '6653', '6657', '6662', '6664', '6654', '6652', '6650', '6659', '6659', '6662', '6666', '6662', '6659', '6656', '6654', '6646', '6663', '6659', '6649', '6652', '6652', '6647', '6636', '6646', '6649', '6642', '6643', '6647', '6636', '6636', '6632', '6629', '6629', '6646', '6632', '6622', '6620', '6625', '6628', '6629', '6637', '6633', '6635', '6637', '6633', '6640', '6637', '6636', '6646', '6637', '6625', '6620', '6626', '6628', '6629', '6619', '6630', '6642', '6639', '6637', '6645', '6628', '6625', '6645', '6643', '6632', '6626', '6625', '6622', '6633', '6635', '6623', '6626', '6632', '6629', '6626', '6632', '6637', '6622', '6633', '6642', '6640', '6647', '6654', '6652', '6635', '6646', '6656', '6646', '6649', '6652', '6640', '6630', '6647', '6662', '6669', '6659', '6652', '6667', '6686', '6704', '6722', '6720', '6720', '6738', '6748', '6762', '6759', '6746', '6755', '6761', '6758', '6766', '6780', '6792', '6793', '6806', '6820', '6816', '6830', '6837', '6821', '6816', '6804', '6802', '6800', '6804', '6796', '6790', '6786', '6785', '6779', '6769', '6758', '6732', '6717', '6714', '6693', '6666', '6660', '6676', '6653', '6649', '6664', '6666', '6663', '6657', '6653', '6636', '6636', '6642', '6625', '6608', '6616', '6615', '6623', '6633', '6646', '6649', '6649', '6650', '6643', '6642', '6649', '6639', '6630', '6633', '6630', '6640', '6654', '6660', '6657', '6656', '6663', '6676', '6674', '6671', '6669', '6650', '6650', '6659', '6663', '6669', '6663', '6659', '6680', '6746', '6819', '6901', '6988', '7097', '7198', '7295', '7416', '7469', '7438', '7338', '7261', '7218', '7073', '6855', '6700', '6604', '6500', '6398', '6337', '6339', '6370', '6371', '6380', '6432', '6487', '6499', '6523', '6548', '6584', '6637', '6659', '6676', '6694', '6704', '6707', '6708', '6732', '6728', '6717', '6724', '6725', '6727', '6737', '6744', '6746', '6745', '6772', '6778', '6772', '6763', '6751', '6734', '6745', '6755', '6756', '6753', '6765', '6756', '6739', '6739', '6741', '6744', '6763', '6772', '6756', '6752', '6775', '6783', '6773', '6780', '6787', '6768', '6768', '6768', '6755', '6751', '6738', '6751', '6758', '6765', '6780', '6770', '6786', '6816', '6810', '6812', '6826', '6816', '6793', '6800', '6809', '6789', '6782', '6802', '6807', '6802', '6812', '6824', '6850', '6884', '6896', '6878', '6874', '6885', '6887', '6879', '6889', '6906', '6895', '6895', '6906', '6922', '6943', '6962', '6970', '6977', '6987', '6978', '6984', '6988', '6984', '6971', '6970', '6978', '6976', '6978', '6981', '6978', '6974', '6988', '7010', '7010', '7000', '6997', '6988', '6981', '6987', '6969', '6953', '6959', '6953', '6935', '6935', '6930', '6902', '6889', '6895', '6879', '6853', '6833', '6809', '6782', '6762', '6755', '6739', '6722', '6728', '6710', '6697', '6687', '6686', '6666', '6660', '6656', '6643', '6642', '6636', '6611', '6602', '6599', '6596', '6596', '6594', '6584', '6581', '6588', '6589', '6582', '6579', '6578', '6591', '6592', '6591', '6578', '6562', '6555', '6575', '6577', '6561', '6555', '6555', '6553', '6565', '6579', '6570', '6561', '6564', '6568', '6561', '6587', '6592', '6577', '6575', '6594']

这里 [7237, 7288, 7215, 7242, 7368, 7469] 这些是峰值/高元素。
我需要找到:

Q=(lowest value on left of each peak/high element)
S=(lowest value on right of each peak/high element)

我的程序到目前为止:

lead_2=['#Those values']
print (lead_2)
lead_2 = list(map(int, lead_2))
idx = range(len(lead_2))
pval = [1 - sum([i >= j for j in lead_2]) / (len(lead_2)+1) for i in lead_2]
stat_pval = [idx for idx,p in enumerate(pval) if p <= 0.01]
grps = []
consec_idx = []
stat_pval.append(stat_pval[-1]+2)

for i in range(len(stat_pval)-1):
    if stat_pval[i] == stat_pval[i+1]-1:
        consec_idx.append(stat_pval[i])
    else:
        consec_idx.append(stat_pval[i])
        grps.append(consec_idx)
        consec_idx = []
del consec_idx
del stat_pval[-1]
idx_and_max_per_peak = []
Peak_value=[max(lead_2[grp[0]:grp[-1]+1]) for grp in grps]
print ('HighestPeak_value=',Peak_value)

请帮忙。

Answer 1

使用 max和 list.index找出峰值指数
然后使用 min在任一侧找到最小值

A=[24,23,22,21,24,25,27,28,35,38,32,26,25,24,26,30,36]

# will get the index of peak value
idx = A.index(max(A))

# find the lowest on the left
q1 = min(A[:idx])

# find the lowest on the right
q2 = min(A[idx:])

print(q1, q2)