For this figure, I am using Word and Mathtype to draw but the output is not so nice. How can I draw in in LaTeX? I am just new to package TikZ but I guess that it's power can help me here?enter image description here

  • 1
    Do you really want the frames around the formulæ?
    – Bernard
    Jan 12 at 21:08
  • 1
    Why is there A,B,C near X,Y,Z ? a start for you \documentclass[tikz,border=5mm]{standalone} \begin{document} \begin{tikzpicture} \path (0,0) node[draw] (A) {A} (3,2) node[draw] (B) {B} ; \draw[cyan,->] (A)--(B) node[midway,sloped,above]{$\lambda_1=1.111$} ; \end{tikzpicture} \end{document}
    – Black Mild
    Jan 12 at 21:13
  • @Bernard. It might be better if I have box but not really necessary.
    – TrungDung
    Jan 12 at 21:19
  • @BlackMild: Thank you. Based on your code, I will work on to build up the figure. I will post the final code later here.
    – TrungDung
    Jan 12 at 21:20

3 Answers 3


An attempt to do it quick and simple:


\tikzset{mybox/.style={draw},myarrow/.style={blue,->},myformula/.style={midway,sloped,draw,black,outer sep=4pt}}
\node[mybox](Z) at (0,0) {Z};
\node[mybox](X) at (4,2) {X};
\node[mybox](Y) at (4,-2) {Y};

\node[anchor=east] at (Z.west) {B};
\node[anchor=west] at (X.east) {A};
\node[anchor=west] at (Y.east) {C};

\draw[myarrow] (Z) -- (X) node[myformula,above]{$\lambda_1=-1.115$};
\draw[myarrow] (X) -- (Y) node[myformula,above]{$\lambda_2=-8.273$};
\draw[myarrow] (Z) -- (Y) node[myformula,below]{$\lambda_3=13.232$};

enter image description here


This is very easy to obtain from a simple tabular environment and pstricks:



{\renewcommand{\arraystretch}{4}\centering \begin{tabular}{c!{\qquad}c!{\qquad}c}
                & & \psDefBoxNodes{X}{\fbox{X}}\enspace A\\
              B\qquad \psDefBoxNodes{Z}{\fbox{Z}}& & \\
               & & \psDefBoxNodes{Y}{\fbox{Y}}\enspace C
\psset{arrowinset = 0, arrows =->, linecolor=LightBlue, nodesep=3pt, nrot=:U}


enter image description here

  • How long do you use pstricks? Jan 13 at 3:10
  • @minhthien_2016: I'm not sure I understand what you mean exactly – since when I use pstricks?
    – Bernard
    Jan 13 at 9:12

With use of libraries arrows.meta and quotes:

\documentclass[border=3.141592, tikz]{standalone}

every edge quotes/.style = {auto, draw=black, thin,
                            inner sep=2pt, outer sep=2pt, sloped},
\scoped[nodes={draw, outer sep=2pt}]%
\node[label=left:B] (Z) at (0, 0) {Z};
\node[label=right:A](X) at (4, 2) {X};
\node[label=right:C](Y) at (4,-2) {Y};
\path[draw=cyan, thick, -Straight Barb] 
    (Z) edge["$\lambda_1=-1.115$"]  (X)
    (X) edge["$\lambda_2=-8.273$"]  (Y)
    (Z) edge["$\lambda_3=13.232$" '](Y);

enter image description here

  • I like how much different flavors one can have with TikZ, thanks for this solution!
    – TobiBS
    Jan 13 at 9:11

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.