温馨提醒，技术指标有其本身局限性，一旦不符合预期，立即清仓控制风险。指标仅供参考与学习，请勿商用或实战，否则后果和损失自行承担！
编写要求：
收盘价不超过30日均线上下10%选股公式。
公式在线网解答：
BETWEEN(C/MA(C,30),0.9,1.1);
其他写法：
该公式通过计算30日均线上下10%的通道区间，筛选收盘价在该区间内的股票。通道宽度可根据需求调整百分比参数
{参数设置}
MA30:=MA(CLOSE,30); {计算30日均线}
UPPER_BAND:=MA30*1.1; {上轨：均线+10%}
LOWER_BAND:=MA30*0.9; {下轨：均线-10%}
{选股条件：收盘价在通道区间内}
XG:CLOSE>=LOWER_BAND AND CLOSE<=UPPER_BAND;
{可视化标记}
DRAWKLINE(H,O,L,C);
DRAWCOLORLINE(MA30,COLORRED);
DRAWCOLORLINE(UPPER_BAND,COLORGREEN);
DRAWCOLORLINE(LOWER_BAND,COLORGREEN);
网页唯一标识识别码
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指标使用通用经验总结
- 一般出现信号不急着立即介入，介入时机一般尾盘半小时判断信号是否可介入；
- 指标信号出现后第二天冲高阴线，立即清仓，等待突破上一个信号点最高价判断是是否介入；
- 指标信号出现后第二天阴线或假阳线，立即清仓，等待突破上一个信号点最高价在判断是否介入；
- 在上涨，现价处于上涨高位的『介入、看多』信号不参与；
- 不是信号一出现就介入，要根据市场环境，量价关系，市场情绪等诸多因素判断是否可介入；
- 技术指标有其本身局限性，宁可错过，也不要做错；
- 拿到指标后，多测试，多练习，看是否符合预期，总结规律；
总之一旦信号失真，不符合预期，立即清仓控制风险 ；
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