\begin{tikzpicture} \begin{sankeydiagram}%[debug] \colorlet{cold}[rgb]{cyan!75!blue!50!white} \colorlet{hot}[rgb]{red!50!orange!75!white} \sankeyset{ ratio=90pt/6,minimum radius=15pt, start style=simple,end style=simple, draw/.style={ draw=blue!50!cyan, line width=1pt,line cap=round,line join=round, }, cold/.style={ fill/.style={ draw=cold,line width=0pt,fill=cold, }, }, cold to hot/.style={ fill/.style={ fill=none,top color=cold, bottom color=hot,middle color=yellow, }, }, hot/.style={ fill/.style={ draw=hot,line width=0pt,fill=hot, }, }, } \sankeyset{cold} \sankeynodestart{name=p0,at={100,0},angle=-90,quantity=6} \sankeyadvance{p0}{50pt} \sankeyfork{p0}{3/p1,3/p2} \sankeyturnleft{p1}{90} \sankeyadvance{p1}{20pt} \sankeyadvance{p2}{60pt} \sankeyfork{p2}{2/p3,1/p4} \sankeyturnleft{p3}{90} \sankeyadvance{p3}{50pt} \sankeyfork{p3}{1/p5,1/p6} \sankeyadvance{p5}{70pt} \sankeyfork{p1}{1/p7,1/p8,1/p9} \sankeyadvance{p7}{50pt} \sankeyadvance{p9}{50pt} \sankeyadvance{p4}{40pt} \sankeyturnleft{p4}{90} \sankeyadvance{p4}{65pt} \sankeyadvance{p7}{40pt} \sankeynode{ name=p11,at={[shift={(50pt,-15pt)}]p7},quantity=3, forked={1/p7a,1/p9a,1/p5a}, } \sankeyoutin{p7}{p7a} \sankeyoutin{p9}{p9a} \sankeyoutin{p5}{p5a} \sankeyadvance{p11}{30pt} \sankeyend{p11} \sankeyturnright{p8}{90} \sankeyturnright{p6}{90} \sankeyturnright{p4}{90} \sankeyset{hot} \sankeyadvance[cold to hot]{p8}{40pt} \sankeynode{ name=p10,at={[shift={(-15pt,-60pt)}]p8},angle=-90,quantity=3, forked={1/p8a,1/p6a,1/p4a}, } \sankeyoutin[cold to hot]{p4}{p4a} \sankeyoutin[cold to hot]{p6}{p6a} \sankeyoutin{p8}{p8a} \sankeyadvance{p10}{30pt} \sankeyend{p10} \end{sankeydiagram} \end{tikzpicture}