How do I create the following illustration in LaTeX? - image

Question

I have tried to create the following illustration in LaTex with poor results. The problem is that I am not able to determine the starting points nor ending points of the arrows how I want to. Any suggestions/hints how to do succeed in this?

Answer 1

Here is possible implementation using tikz, with the calc and positioning libraries
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{positioning,calc}
\begin{document}
\begin{tikzpicture}[box/.style={
draw,thick,
},
label/.style={draw=none,midway,sloped,above,font=\small},
myarrow/.style={->,thick} ,
]
%poition upper and lower nodes
\node[box] (gov) {Government};
\node[box,below=4cm of gov,minimum width=3cm,dotted] (trans) {Transaction} ;
% position first line extremity at, say, 1/3 gov node
\coordinate (extr1) at ($(trans.north west)!0.33!(trans.north east)$) ;
% then extremity 2 slightly at the right of extr1
\coordinate (extr2) at ([xshift=2mm]extr1) ;
% position bank vertically halfway gov/trans and centered wrt extr1 and extr2
% due to some limitations in tikz parser, one must first define intermediate coords
\coordinate (extr12) at ($(extr1)!0.5!(extr2)$) ;
\coordinate (mid) at ($(gov)!0.5!(trans)$);
\node[box] (bank) at (extr12 |- mid) {Bank};
% draw first arrows
\draw[myarrow] (extr1) -- (extr1 |- bank.south) node[label] {information};
\draw[myarrow] (extr2 |- bank.south) -- (extr2) node[label] {monitoring};
\draw[myarrow] (extr1 |- bank.north) -- (extr1 |- gov.south) node[label] {reporting} ;
\draw[myarrow] (extr2 |- gov.south) -- (extr2 |- bank.north) node[label] {fines} ;
% position last arrow midway from east border of bank and gov
\coordinate (extr3) at ($(bank.east)!0.5!(gov.east)$) ;
\draw[myarrow] (extr3 |- gov.south) -- (extr3 |- trans.north) node[label] {investigation} ;
\end{tikzpicture}
\end{document}
You have to modify a couple parameters for the positioning that you want and add style to nodes/lines as required.

Answer 2

Using north and south (and phantom) makes it ok vertically. Instead, I wanted to use calc TikZ library to also horizontally offset endpoints of arrows from nodes (a), (b), (c) in a more elegant way but I didn't succeed:
\documentclass[tikz,border=5mm]{standalone}
\usetikzlibrary{arrows,decorations.markings}
\begin{document}
\begin{tikzpicture}[>=triangle 45, thick, sloped]
\node [rectangle, very thick, draw, right] (a) at (0,6) {\large\textbf{Government}};
\node [rectangle, very thick, draw, right] (b) at (0,3) {\large\textbf{Bank}};
\node [rectangle, densely dotted, draw, right] (c) at (0,0) {\large Transaction};
\node (d) at (.2,6) {\phantom{G}};
\node (e) at (.2,3) {\phantom{B}};
\node (f) at (.2,0) {\phantom{T}};
\node (g) at (1.1,6) {\phantom{G}};
\node (h) at (1.1,3) {\phantom{B}};
\node (i) at (1.1,0) {\phantom{T}};
\node (j) at (2,6) {\phantom{G}};
\node (k) at (2,0) {\phantom{T}};
\draw [->] (e.north) -- (d.south) node[pos=0.5, above] {reporting};
\draw [->] (g.south) -- (h.north) node[pos=0.5, above] {fines};
\draw [->] (f.north) -- (e.south) node[pos=0.5, above] {information};
\draw [->] (h.south) -- (i.north) node[pos=0.5, above] {monitoring};
\draw [->] (j.south) -- (k.north) node[pos=0.5, above] {investigation};
\end{tikzpicture}
\end{document}
This code results in:
Then you can tune this depending on your taste!