[Tex/LaTex] smooth curved arrow in flowchart

arrowstikz-arrowstikz-pgf

I am new to latex with a very little idea in tikzpicture or pgfplots, so you know what would happen…
Please help me with the following flowchart-type diagram. Here the cartesian plot is a regular X vs Y plot that should be generated with a supplied table, for now, with coordinats {(0,0) (1,1)}. Thanks.

FlowChart

Best Answer

Would this be fair for a start... The proposal starts with a couple of style definitions, then place the various nodes cetering the polygon via above left, below right etc, etc., lastly, connect the nodes with lines that also has a style definition.

Reference: Is it possible to change the size of an arrowhead in TikZ/PGF?

enter image description here

Code

\documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{arrows,arrows.meta,shapes.geometric,positioning,calc}

\tikzset{poly7/.style={draw=blue!30,fill=blue!30,minimum size=2cm,regular polygon,regular polygon sides=7,scale=0.5},
rect/.style={draw=blue!20, fill=blue!20,rectangle, minimum height=1cm,rounded corners},
line/.style={draw,solid,line width=2mm,-{Latex[length=4mm]},rounded corners}
}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}

% create the node

\node[poly7] (a) {\color{red} My Text2};
\node[rect, above right=0.3cm and1cm of a] (b) {\color{red} My Text 0};
\node[below left=0.1cm and 1.5cm of a] (c){};
\path[color=blue,line] (b.west) -| node[above right](){\tiny My Text 1} (a.north);
\path[color=green!40!brown,line] (c.west) |- node[above right](){\color{black}\tiny My Text 3} (a.west);
\begin{axis}[scale=0.2,xshift=3cm,yshift=-1cm]
\node(sin) at (axis cs:-1,1){};
\addplot [red]  coordinates{(0,0) (2,2)};
\end{axis}
\path[color=green!40!brown,line] ([xshift=0.1cm]a.east)-- node[above,sloped](){\color{black}\tiny Predict}(sin);
\end{tikzpicture}
\end{document}

Converging and Diverging Arrows

When we set node distance=1cm (the default) we can use:

\path[myline,->,shorter] {[out=270,in=90] (A1) edge (B) 
                                          (A2) edge (B) }
                                          (B)  edge (C)
                         {[out=270,in=90] (C)  edge (D1)
                                               edge (D2)}
                                          (D1) edge (E1) (E1) edge (F1)
                                          (D2) edge (E2) (E2) edge (F2)
                        ;

which looks like

enter image description here

With my paths.ortho library ([1], [2], Explanation) we can do

\path[myline,->,shorter] {[|-|] (A1) edge (B) 
                                (A2) edge (B) }
                                (B)  edge (C)
                         {[|-|] (C)  edge (D1)
                                     edge (D2)}
                                (D1) edge (E1) (E1) edge (F1)
                                (D2) edge (E2) (E2) edge (F2)
                        ;

which will result in

enter image description here

A small node distance of .5cm makes it hard to place the arrows because of the arrow tip’s size.

Code

\documentclass[tikz,convert=false]{standalone}
\usetikzlibrary{positioning,shadows}
\makeatletter
\tikzset{west above/.code=\tikz@lib@place@handle@{#1}{south west}{0}{1}{north west}{1}}
\tikzset{west below/.code=\tikz@lib@place@handle@{#1}{north west}{0}{-1}{south west}{1}}
\tikzset{east above/.code=\tikz@lib@place@handle@{#1}{south east}{0}{1}{north east}{1}}
\tikzset{east below/.code=\tikz@lib@place@handle@{#1}{north east}{0}{-1}{south east}{1}}
\makeatother
\begin{document}
\begin{tikzpicture}[
  every node/.style={
    font=\sffamily\fontsize{8}{8}\selectfont,
    drop shadow,
    fill=blue!10,
    align=center
  },
  big node/.style={text width=7cm},
  small node/.style={text width=2.5cm},
  F5 node/.style={font=\fontsize{7}{7}\selectfont,text=blue},
  >=latex, %Make the arrow tips latex
  myline/.style={ultra thick,black!50},
  shorter/.style={shorten <=1mm,shorten >=0.5mm},
  node distance=.5cm,
  |*/.style={to path=(\tikztostart.south) -- (\tikztostart.south|-\tikztotarget.north)},
  *|/.style={to path=(\tikztostart.south-|\tikztotarget.north) -- (\tikztotarget.north)}
  ]
\begin{scope}[every node/.append style={big node}]
  \node (B) {Filter process 1};
  \node[below=of B] (C) {Filter process 2};
\end{scope}
\begin{scope}[every node/.append style={small node}]
  \node[west above=of B] (A1) {Mutant dataset};
  \node[east above=of B] (A2) {Normal dataset};

  \node[west below=of C] (D1) {Reduced Model};
  \node[east below=of C] (D2) {Full Model};

  \node[below=of D1] (E1) {Identify gene set 1};
  \node[below=of E1] (F1) {Analyze gene set 1};

  \node[below=of D2] (E2) {Identify gene set 2};
  \node[below=of E2] (F2) {Analyze gene set 2};
\end{scope}
\path (A1) -- node[F5 node] {F5} (A2);

\path[myline,->,shorter]  {[|*] (A1) edge (B) 
                                (A2) edge (B) }
                                (B)  edge (C)
                          {[*|] (C)  edge (D1)
                                     edge (D2)}
                                (D1) edge (E1) (E1) edge (F1)
                                (D2) edge (E2) (E2) edge (F2)
                         ;
\end{tikzpicture}
\end{document}

Output

enter image description here

[Tex/LaTex] Draw a ERD in Crow’s foot

This is a possible solution where box style is defined rectangle split with two parts. Lines between boxes use mostly the same pattern as below. FROM a starting point TO an end point located either 0.5cm above (below) a special point call label where 3 lines spread out.

\draw[red,thick] (FROM) node[right]{\color{black}1} --  node[right]{\color{black}suppliess} ($(To)+(-1,0.5)$) coordinate(label){} --([xshift=-1cm]TO) 
(label) -- ([xshift=-1.5cm]TO) 
(label) --node[right]{\color{black}$\star$}([xshift=-0.5cm]TO);

enter image description here

Code

\documentclass[border=10pt]{standalone}
%\usepackage[margin=1cm]{geometry}
\usepackage{tikz}
\usetikzlibrary{shapes.multipart,calc,positioning}
\tikzset{
box/.style={draw=red, fill=yellow, minimum width=3cm, rectangle split, rectangle split parts=2}
}

\begin{document}
\begin{tikzpicture}

% draw all nodes
\node[box](A) {\textbf{vender}
\nodepart{two}vender\textunderscore id (PK) };
\node[box, below =2cm of A] (B) {\textbf{repair}
\nodepart{two}\parbox[t]{3cm}{\texttt{item\_id} (FK)\\
\texttt{repair\_id} (PK)\\
\texttt{vender\_id} (FK)
 }};

\node[box,right=2cm of A](C) {\textbf{Inventory type}
\nodepart{two}grp\textunderscore type (PK) };
\node[box, right =2cm of C] (D) {\textbf{Order item}
\nodepart{two}\parbox[t]{3cm}{\texttt{Ol\_line\_num} (PK) \\
\texttt{o\_id} (FK)\\
\texttt{grp\_type} (FK)
 }};

\node[box,below=5cm of C](E) {\textbf{Item}
\nodepart{two}\parbox[t]{3cm}{\texttt{item\_id} (PK)\\
\texttt{vendor\_id} (FK)}};
\node[box, below right=2cm and 3cm of E] (F) {\textbf{Storage}
\nodepart{two}\parbox[t]{3cm}{\texttt{stirage\_id} (PK)\\
\texttt{location\_id} (FK)
 }};

\node[box, below left=5cm and 1cm of E] (L) {\textbf{Location}
\nodepart{two}\parbox[t]{3cm}{\texttt{location\_id} (PK)
 }};

\node[box, right=12cm of A] (R) {\textbf{order}
\nodepart{two}\parbox[t]{3cm}{\texttt{o\_id} (FK)\\
\texttt{user\_id} (FK)\\
\texttt{vender\_id} (FK) }};
\node[box, below =2cm of R] (S) {\textbf{user}
\nodepart{two}\texttt{repair\_id} (PK) };

% draw lines
\draw[red,thick] (A.east)node[right]{\color{black}1} --  node[right]{\color{black}suppliess} ($(E.north)+(-1,0.5)$) coordinate(e2){} --([xshift=-1cm]E.north) 
(e2) -- ([xshift=-1.5cm]E.north) 
(e2) --node[right]{\color{black}$\star$}  ([xshift=-0.5cm]E.north);  

\draw[red,thick] (C.south) -- node[right]{\color{black}includess} ($(E.north)+(0,0.5)$) coordinate(e){} --(E.north) 
(e) -- ([xshift=-5mm]E.north) 
(e) -- ([xshift=5mm]E.north);  

\draw[red,thick] (E.east)node[below right]{\color{black}1} -| ($(F.north)+(0,0.5)$) coordinate(f2){}  node[midway,above]{\color{black}is found in} -- (F.north) 
(f2) -- ([xshift=-5mm]F.north) 
(f2) --node[right]{\color{black}$\star$}  ([xshift=5mm]F.north);  

\draw[red,thick] (E.west) -| node[below]{\color{black}needs} ($(B.east)+(0.5,0)$) coordinate(e2){} --(B.east) 
(e2) -- ([yshift=-5mm]B.east) 
(e2) -- ([yshift=5mm]B.east);  

\draw[red,thick] (L.east)node[above right]{\color{black}1}  -| ($(F.south)+(0,-0.5)$) coordinate(f){}  node[below]{\color{black}is found in} -- (F.south) 
(f) -- ([xshift=-5mm]F.south) 
(f) -- node[right]{\color{black}$\star$} ([xshift=5mm]F.south);  

\draw[red,thick] (C.east) node[above right]{\color{black}1} --($(D.west)-(0.5,0)$) coordinate(d){} --(D.west) 
(d) -- ([yshift=-5mm]D.west) 
(d) -- ([yshift=5mm]D.west);  

\draw[red,thick] (A.south)node[below right]{\color{black}1} --node[right]{\color{black}perform} ($(B.north)-(0,-0.5)$) coordinate(b){} --(B.north) 
(b) -- ([xshift=-5mm]B.north) 
(b) --node[right]{\color{black}$\star$}  ([xshift=5mm]B.north);  

\draw[red,thick] (A.north)node[above right]{\color{black}1} --++(0,2cm) node[pos=0.5,right]{\color{black}recieves} -| ($(R.north)-(0,-0.5)$) coordinate(s){} -- (R.north) 
(s) -- ([xshift=-5mm]R.north) 
(s) -- node[right]{\color{black}$\star$} ([xshift=5mm]R.north); 

\draw[red,thick] (S.north) -- node[right]{\color{black}givess}($(S.north)+(0,1.5)$) coordinate(r){} --(R.south) 
(r) -- ([xshift=-5mm]R.south) 
(r) -- node[right]{\color{black}$\star$} ([xshift=5mm]R.south);  

\draw[red,thick] (R.west) node[above left]{\color{black}1}--  node[below]{\color{black}contains}($(D.east)+(0.5,0)$) coordinate(d2){} --(D.east) 
(d2) -- ([yshift=-5mm]D.east) 
(d2) -- node[right]{\color{black}$\star$} ([yshift=5mm]D.east);  

\end{tikzpicture}
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Converging and diverging nodes in a flowchart

Converging and Diverging Arrows

Code

Output

[Tex/LaTex] Draw a ERD in Crow’s foot

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