# apnea event type to number mapping
E2N = {
    "Hypopnea": 1,
    "Central apnea": 2,
    "Obstructive apnea": 3,
    "Mixed apnea": 4
}

N2Chn = {
    1: "Rpeak",
    2: "ECG_Sync",
    3: "Effort Tho",
    4: "Effort Abd",
    5: "Flow P",
    6: "Flow T",
    7: "SpO2",
    8: "5_class"
}

Stage2N = {
    "W": 5,
    "N1": 3,
    "N2": 2,
    "N3": 1,
    "R": 4,
}

# 设定事件和其对应颜色
# event_code  color event
#      0      黑色    背景
#      1      粉色    低通气
#      2      蓝色    中枢性
#      3      红色    阻塞型
#      4      灰色    混合型
#      5      绿色    血氧饱和度下降
#      6      橙色    大体动
#      7      橙色    小体动
#      8      橙色    深呼吸
#      9      橙色    脉冲体动
#      10     橙色    无效片段
ColorCycle = ["black", "pink", "blue", "red", "silver", "green", "orange", "orange", "orange", "orange",
                    "orange"]