Cfrgtkky

My problem is very similar to this question. However, I'm unable to use this solution in my figure.

I want to connect two nodes with an arrow which has two corners. Here is my code:

documentclass[12pt]{article}

usepackage{setspace,amsmath,graphicx,float}

usepackage[english]{babel}

usepackage[natbibapa]{apacite}

usepackage{times}

usepackage{tikz}

usetikzlibrary{shapes,arrows,arrows.meta,positioning,calc}

begin{document}

begin{figure}[H] 

centering

tikzstyle{block} = [draw, rectangle, minimum height=5.5em, minimum width=19em]

tikzstyle{smallblock} = [draw, rectangle, minimum height=5.5em, minimum width=9em]

tikzstyle{input} = [coordinate]

tikzstyle{output} = [coordinate]

tikzstyle{pinstyle} = [pin edge={to-,thin,black}]

begin{tikzpicture}[auto,node distance=7cm,>=latex',align=center]

    node [input, name=input] {};

    node [block, rounded corners=5pt, right of=input] (A) {Start with the narrowest product\ or geographic market definition.};

    node [block, rounded corners=5pt, below of=A, node distance=3.5cm] (B) {Is it profitable for a monopoly producer of\ that product to increase prices in a small but\ significant and nontransitory way?};  

    node [block, rounded corners=5pt, below of=B, node distance=3.5cm] (C) {There must be at least one good substitute\ excluded from the current market definition.\ Expand the market to include it.};   

    node [block, rounded corners=5pt, below of=C, node distance=3.5cm] (D) {Now have a multiproduct monopolist.\ Could he profitably raise prices?}; 

    node [smallblock, rounded corners=5pt, right of=D, node distance=8cm] (E) {Stop.\ Market definition\ is wide enough.}; 

    draw [-{Latex[length=3mm]}] (A) -- node[auto][name=1] [right]{} (B);    

    draw [-{Latex[length=3mm]}] (B) -- node[auto][name=2] [right]{No} (C);       

    draw [-{Latex[length=3mm]}] (C) -- node[auto][name=3] [right]{} (D);     

    draw [-{Latex[length=3mm]}] (D) -- node[auto][name=4] [above]{Yes} (E);

    draw [-{Latex[length=3mm]}] (B) -| node[near start][name=5] [above]{Yes} (E); 

    draw [-{Latex[length=3mm]}] (D) -- +(0,1)|- node[auto][name=6] [left]{No} (C);                        

end{tikzpicture} 

caption[Illustration of an HMT decision tree]{Illustration of an HMT decision tree citep{QuantTech}.}label{AlgorithmHMT}

end{figure}

end{document}

I want to connect block D with C (see the last draw), but the code -- +(0,1)|- node (as in the other question) does not work. I tried to alter it of course, but I'm not really making progress.

Can anyone please help?

Like this?

(I guess that you like to have something like the above picture)

I rewrote your MWE significantly

• deprecated tikzstyle{<name>} = [...] I replace with options of tikzpicture as <name>/.style = {....} (see MWE below)


• with tikzlibrary{positioning} the correct syntax is for example left=of <node name>
  


• for node distance I consider positioning again and define node distance = <vertical> and <horizontal>. for distance I select far smaller lengths than you (otherwise the picture is out of page)


• for relative positioning with + you need explicit to define anchor of node: (D.west) -- + (-1,0).

Complete MWE:

documentclass[12pt]{article}

usepackage{setspace,amsmath,graphicx,float}

usepackage[english]{babel}

usepackage[natbibapa]{apacite}

usepackage{times}

usepackage{tikz}

usetikzlibrary{arrows, arrows.meta, calc, positioning, quotes, shapes}



begin{document}

begin{figure}

centering

    begin{tikzpicture}[

    auto,

    node distance = 11mm and 22mm,

      base/.style = {draw, rounded corners=5pt, minimum height=5.5em,

                     align=center},

     block/.style = {base, minimum width=19em},

smallblock/.style = {base, minimum width=9em},

                        ]

coordinate (in);

node [block,right=of in] (A) {Start with the narrowest product\ 

                               or geographic market definition.};

node [block,below=of A ] (B) {Is it profitable for a monopoly producer of\ 

                               that product to increase prices in a small but\ 

                               significant and nontransitory way?};

node [block,below=of B ] (C) {There must be at least one good substitute\ 

                               excluded from the current market definition.\ 

                               Expand the market to include it.};

node [block,below=of C ] (D) {Now have a multiproduct monopolist.\ 

                               Could he profitably raise prices?};

node [smallblock,right=of D] (E) {Stop.\ 

                                   Market definition\ 

                                   is wide enough.};

draw [-{Latex[length=3mm]}] 

    (A) edge                    (B) 

    (B) edge ["No"]             (C)  

    (C) edge                    (D) 

    (D) edge ["Yes"]            (E);

draw [-{Latex[length=3mm]}] 

    (B) -| node[pos=0.25,name=5] {Yes} (E);

draw [-{Latex[length=3mm]}] 

    (D.west) -- +(-1,0) |- node[pos=0.25] {No} (C);

    end{tikzpicture}

caption[Illustration of an HMT decision tree]

        {Illustration of an HMT decision tree citep{QuantTech}.}

    label{AlgorithmHMT}

end{figure}

end{document}