这是一个基于MACD指标进行深度优化的副图指标，包含多种信号提示和选股条件。
指标构成：
1. 核心MACD计算：采用标准参数（12, 26, 9）计算DIFF、DEA和MACD柱。
2. 多色柱状图：MACD柱根据其数值（正/负）以及与前一日的比较（增长/缩减），以不同颜色和渐变效果显示，直观反映动能强弱变化。
3. DIFF线着色：
零轴以下部分显示为红色。
零轴以上部分显示为黄色。
DIFF与DEA两线中较小值部分用绿色线覆盖，辅助观察金叉死叉区域。
4. 特色信号提示：
低位金叉：当DIFF在零轴下方较低位置（<-0.1）上穿DEA时，在副图标注“低位金叉”。
二次金叉：在DEA处于零轴下方的背景下，统计最近一次DEA在零轴上以来的金叉次数，满足21日内出现第二次金叉的条件时，标注“二次金叉”并显示图标。
底背离：当股价创新低而DIFF线未创新低，并出现金叉时，标注“底背离”并绘制红色提示线。
顶背离：当股价创新高而DIFF线未创新高，并出现死叉时，绘制绿色提示线（无文字标注）。
附带的选股器用法：
1. MACD底部金叉选股：选出DIFF在零轴下方低位（<-0.1）首次上穿DEA的股票。
2. MACD二次金叉选股：选出在零轴下方满足“二次金叉”条件的股票。
3. 综合选股：此选股条件直接对应副图指标中的“底背离”信号，选出出现MACD底背离形态的股票。
使用要点：
指标在副图中通过颜色、图标和文字，密集提示MACD的低位金叉、二次金叉和背离信号。
柱状图的颜色渐变主要用于直观显示MACD动能的加速或衰减状态。
选股器可直接调用对应的条件公式，用于筛选具有特定MACD形态（如底部金叉、二次金叉、底背离）的股票。
{副图源码如下}
DIFF:EMA(CLOSE,12)-EMA(CLOSE,27);
DEA:EMA(DIFF,9);
MACD:=2*(DIFF-DEA);
STICKLINE(MACD>=0,MACD,0,2,1),COLORF00FF0;
STICKLINE(MACD<0,MACD,0,2,1),COLORWHITE;
STICKLINE(MACD<REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR00AAFF;
STICKLINE(MACD<REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR00BBFF;
STICKLINE(MACD<REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR00CCFF;
STICKLINE(MACD<REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR00DDFF;
STICKLINE(MACD<REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR00EEFF;
STICKLINE(MACD<REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR00FFFF;
STICKLINE(MACD>=REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR0000AA;
STICKLINE(MACD>=REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR0011BB;
STICKLINE(MACD>=REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR0022CC;
STICKLINE(MACD>=REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR0033DD;
STICKLINE(MACD>=REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR0044EE;
STICKLINE(MACD>=REF(MACD,1)AND MACD>0,0,MACD,2,0 ),COLOR0055FF;
STICKLINE(MACD>REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORAA00BB;
STICKLINE(MACD>REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORBB11BB;
STICKLINE(MACD>REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORCC22BB;
STICKLINE(MACD>REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORDD33BB;
STICKLINE(MACD>REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLOREE44BB;
STICKLINE(MACD>REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORFF55BB;
STICKLINE(MACD<=REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORFFAA00;
STICKLINE(MACD<=REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORFFBB11;
STICKLINE(MACD<=REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORFFCC22;
STICKLINE(MACD<=REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORFFDD33;
STICKLINE(MACD<=REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORFFEE44;
STICKLINE(MACD<=REF(MACD,1)AND MACD<0,0,MACD,2,0 ),COLORFFFF55;
IF(DIFF<0,DIFF,0),COLORRED,LINETHICK1;
IF(DIFF<0,0,DIFF),COLORYELLOW,LINETHICK1;
IF(DIFF<DEA,DIFF,DEA),COLOR00FF00,LINETHICK1;
IF(DIFF>DEA,DEA,DEA),COLORWHITE,LINETHICK1;
低位金叉:=CROSS(DIFF,DEA) AND DIFF<-0.1;
STICKLINE(低位金叉,0,-0.18,2,0),COLORYELLOW;
DRAWTEXT(低位金叉,-0.1,' 低位金叉'),COLORYELLOW;
JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));
二次金叉:=CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;
STICKLINE(二次金叉,0,-0.18,2,0),COLORFF00FF;
DRAWICON(二次金叉,DEA*1.04,13) ;
DRAWTEXT(二次金叉,-0.1,' 二次金叉'),COLORFF00FF;
A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));
底背离:=REF(CLOSE,A1+1)>CLOSE AND DIFF>REF(DIFF,A1+1) AND CROSS(DIFF,DEA);
STICKLINE(底背离,0,0.13,2,0),COLOR00FF00;
DRAWLINE(A1=0,DEA,底背离,DEA,0),COLORRED,LINETHICK2;
DRAWTEXT(底背离,0.1,' 底背离'),COLOR00FF00;
A2:=BARSLAST(REF(CROSS(DEA,DIFF),1));
顶背离:=REF(CLOSE,A2+1)<CLOSE AND REF(DIFF,A2+1)>DIFF AND CROSS(DEA,DIFF);
DRAWLINE(A2=0,DEA,顶背离,DEA,0),COLORGREEN,LINETHICK2;
{MACD底部金叉选股源码如下}
DIFF:=EMA(CLOSE,12)-EMA(CLOSE,27);
DEA:=EMA(DIFF,9);
MACD:=2*(DIFF-DEA);
CROSS(DIFF,DEA) AND DIFF<-0.1;
{MACD二次金叉选股源码如下}
DIFF:=EMA(CLOSE,12)-EMA(CLOSE,27);
DEA:=EMA(DIFF,9);
MACD:=2*(DIFF-DEA);
低位金叉:=CROSS(DIFF,DEA) AND DIFF<-0.1;
JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));
CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;
{选股源码如下}
DIFF:=EMA(CLOSE,12)-EMA(CLOSE,27);
DEA:=EMA(DIFF,9);
MACD:=2*(DIFF-DEA);
低位金叉:=CROSS(DIFF,DEA) AND DIFF<-0.1;
JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));
二次金叉:=CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;
A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));
REF(CLOSE,A1+1)>CLOSE AND DIFF>REF(DIFF,A1+1) AND CROSS(DIFF,DEA);
