是指最近一次K线是实心的红柱时，从前面5天的低点处画线？
参考，（加载日线上用）
MAH:EMA2(HIGH,15),RGB(192,192,192);
MAL:EMA2(LOW,15),RGB(192,192,192);
MAC:=EMA2(CLOSE,15),RGB(168,168,0);
MACC:EMA2(CLOSE,120),RGB(120,60,0);
N1:=BARSLAST(H>MAH);
N2:=BARSLAST(L<MAL);
DRAWCOLORKLINE(N1<N2&&C>=O,COLORRED,1);
DRAWCOLORKLINE(N1<N2&&C<O,COLORRED,0);
DRAWCOLORKLINE(N1>N2&&C>=O,COLORCYAN,1);
DRAWCOLORKLINE(N1>N2&&C<O,COLORCYAN,0);
M1:=BARSLAST(N1<N2&&C<O)+1;
A1:=BACKSET(ISLASTBAR,M1);
M2:=BARSLAST(N1>N2&&C<O)+1;
A2:=BACKSET(ISLASTBAR,M2);
DRAWSL(REFX(CROSS(A1,0.5),5),L,0,10,2,COLORGREEN);
DRAWSL(REFX(CROSS(A2,0.5),5),H,0,10,2,COLORRED);
以您3楼截图为例，粉色箭头所指处是最近一次K线变红？蓝色箭头所指处是最近一次K线变青？
画线的起始点就是这两个位置的前面5周期的高低点呀
您说的K线最近一次变红 是指最近一个空心的红色K线位置？
这么改下，
MAH:EMA2(HIGH,15),RGB(192,192,192);
MAL:EMA2(LOW,15),RGB(192,192,192);
MAC:=EMA2(CLOSE,15),RGB(168,168,0);
MACC:EMA2(CLOSE,120),RGB(120,60,0);
N1:=BARSLAST(H>MAH);
N2:=BARSLAST(L<MAL);
DRAWCOLORKLINE(N1<N2&&C>=O,COLORRED,1);
DRAWCOLORKLINE(N1<N2&&C<O,COLORRED,0);
DRAWCOLORKLINE(N1>N2&&C>=O,COLORCYAN,1);
DRAWCOLORKLINE(N1>N2&&C<O,COLORCYAN,0);
M1:=BARSLAST(CROSS(N1<N2,0.5))+1;
A1:=BACKSET(ISLASTBAR,M1);
M2:=BARSLAST(CROSS(N1>N2,0.5))+1;
A2:=BACKSET(ISLASTBAR,M2);
DRAWSL(REFX(CROSS(A1,0.5),5),L,0,10,2,COLORWHITE);
DRAWSL(REFX(CROSS(A2,0.5),5),H,0,10,2,COLORWHITE);
