How to make a commutative diagram with 16 rectangles and to take not more than half a page?

Question

Here is the code I am using:

\documentclass{article}
%\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{tikz-cd}
\usepackage{mathtools, amssymb}
 \usepackage{pst-node, auto-pst-pdf}
[ 
\begin{tikzcd}[sep=large]
  M \rar \dar["\mathrm{Pinch}" ' ]  \arrow[dr, dashed, "\beta_1 + \beta_2 + \beta_3 = 0", sloped] & * \rar \dar & \Sigma M \dar \rar & \Sigma M \dar \%
M \vee M \vee M \rar[swap, "{(\beta_1 , \beta_2 , \beta_3)}" ] & N \rar & N' \rar & \Sigma M \vee \Sigma M \vee \Sigma M \rar[swap, "{(\beta_1 , \beta_2 , \beta_3)}" ] & N \rar & N' \rar & \Sigma M \vee \Sigma M \vee \Sigma M 
\end{tikzcd}
]

But this code gives the figure below:

So, I want to know how to make this commutative diagram have 16 rectangles and to take not more than half a page?

Also I want to color every third down arrow with green

Any help will with this will be greatly appreciated!

Please show a sketch of the expected output. How are these 16 rectangles supposed to be arranged. You also mention wanting the diagram to take up less than half a page. Does that refer to widthwise or lengthwise? — leandriis, Jun 05 '21 at 14:44
For green colored downwars-pointing arrows, you can use \dar[green] instead of \dar. — leandriis, Jun 05 '21 at 14:46
@leandriis just beside each other, like in the above given figure I have only 3 rectangles but I want to draw 16. Lenghtwise. — Happy, Jun 05 '21 at 14:50
Unless you quite drastically decrease the margin size and/or use a landscape oriented page, I'm pretty surre 16 rectangle sina single line won't fit, even if you use a quite small font size. — leandriis, Jun 05 '21 at 14:55
Even if each rectangle is less than 2cm wide, sixteen of them will take 32cm. How to fit an elephant in a suitcase? — egreg, Jun 05 '21 at 15:07
you need to rethink design of your diagram. Do you realy need all nodes? One possible solution is to split it into two (or three) parts. — Zarko, Jun 05 '21 at 15:10
@leandriis 16 rectangles not in a single line, in half a page. like for example 4 rectangles in the first line and so on until 4 rectangles in the fourth line. — Happy, Jun 05 '21 at 15:14
Yeah I can split it into 3 or 4 parts, each part in a single line. @Zarko — Happy, Jun 05 '21 at 15:15
@Happy: This misunderstanding is precisely why I asked for a sketch of the expected output. Your statement "just beside each other" made me (and apparently others, too) think you wanted to draw all 16 rectangles in a single row. — leandriis, Jun 05 '21 at 15:23
I am so sorry for that. I do not mean that, next time I will sketch my figure with paint. The thing is that I usually sketch my figure with a pen and then take a photo and usually the photo has a very large size and can not be uploaded.@leandriis — Happy, Jun 05 '21 at 15:26
You could use standalone class to show the complete diagram. — John Kormylo, Jun 05 '21 at 15:57
@Happy: A photo of a hand-drawn sketch it perfectly fine. In order to upload it, you could crop it and/or decrease its resolution in order to get a smaller file size. — leandriis, Jun 05 '21 at 16:02
@leandriis ok, thank you! yeah I had to use another program to decrease its size. — Happy, Jun 05 '21 at 16:09
Simply replace "article" with "standalone". You might need to load the standalone package. — John Kormylo, Jun 05 '21 at 16:17
@Happy Just try John's recommendation - that's quicker than asking :) — Dr. Manuel Kuehner, Jun 06 '21 at 01:41
@JohnKormylo I did that but it did not compile and gave me an error — Happy, Jun 06 '21 at 12:16
@Dr.ManuelKuehner I did that but it did not compile and gave me an error — Happy, Jun 06 '21 at 12:16
See the second example in section 3.2 Tweaking to paths, page 12, TikZ-cd documentation (Version 1.0 May 4, 2021). it can be a way, how to solve your problem. — Zarko, Jun 14 '21 at 05:55

John Kormylo · Answer 1 · 2021-06-14T00:43:12.487

4

Not an answer, just too long for a comment. This shows how to use standalone class with pdflatex.

\documentclass{standalone}
%\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{tikz-cd}
\usepackage{mathtools, amssymb}
% \usepackage{pst-node, auto-pst-pdf}% ???
\begin{document}
\begin{tikzcd}[sep=large]
  M \rar \dar["\mathrm{Pinch}" ' ]  \arrow[dr, dashed, "\beta_1 + \beta_2 + \beta_3 = 0", sloped] & * \rar \dar & \Sigma M \dar \rar & \Sigma M \dar \%
M \vee M \vee M \rar[swap, "{(\beta_1 , \beta_2 , \beta_3)}" ] & N \rar & N' \rar & \Sigma M \vee \Sigma M \vee \Sigma M \rar[swap, "{(\beta_1 , \beta_2 , \beta_3)}" ] & N \rar & N' \rar & \Sigma M \vee \Sigma M \vee \Sigma M 
\end{tikzcd}
\end{document}

This is how to produce the same diagram (more of less) using a plain tikzpicture.

\documentclass{standalone}
%\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{mathtools, amssymb}
\usepackage{tikz}
\usetikzlibrary{matrix,arrows.meta,calc}
\begin{document}
\begin{tikzpicture}
\matrix (A) [matrix of math nodes, row sep=2cm, column sep={3cm,between origins}]{
  M & * & \Sigma M & \Sigma M \
 M \vee M \vee M & N & N' & \Sigma M \vee \Sigma M \vee \Sigma M \
 N & N' & \Sigma M \vee \Sigma M \vee \Sigma M \
};
\draw[->] (A-1-1) -- (A-1-2);
\draw[->] (A-1-2) -- (A-1-3);
\draw[->] (A-1-3) -- (A-1-4);
\draw[->] (A-1-1) -- (A-2-1) node[midway,left] {Pinch};
\draw[->] (A-1-2) -- (A-2-2);
\draw[->] (A-1-3) -- (A-2-3);
\draw[->] (A-1-4) -- (A-2-4);
\draw[dashed,->] (A-1-1) -- (A-2-2) node[midway,above,sloped] {$\beta_1 + \beta_2 + \beta_3 = 0$};
\draw[->] (A-2-1) -- (A-2-2) node[midway,below] {$(\beta_1 , \beta_2 , \beta_3)$};
\draw[->] (A-2-2) -- (A-2-3);
\draw[->] (A-2-3) -- (A-2-4);
\draw[thick,green,->] (A-2-4) |- ($(A-2-4)!0.5!(A-3-1)$)% midway
   node[below, black]{$(\beta_1 , \beta_2 , \beta_3)$}
  -| (A-3-1);
\draw[->] (A-3-1) -- (A-3-2);
\draw[->] (A-3-2) -- (A-3-3);
\end{tikzpicture}
\end{document}

edited Jun 14 '21 at 00:43

answered Jun 06 '21 at 14:35

John Kormylo

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So where is the 16 rectangles? – Happy Jun 07 '21 at 01:14
I should warn you that I know nothing about tikzcd protocol. I could do the whole thing using tikz, however. – John Kormylo Jun 07 '21 at 13:21
Ok. I will try the code and let you know if I have further questions. – Happy Jun 07 '21 at 15:51
your second code did not work with me, I am still having my problem. – Happy Jun 12 '21 at 11:02
Also, your first code did not work with me, I am still having my problem. – Happy Jun 12 '21 at 11:05
Are you using pdflatex (latex->pdf) or latex->dvi->ps->pdf (ghostscript)? The latter adds time and difficulty with each conversion. – John Kormylo Jun 12 '21 at 15:52
I am using the first. – Happy Jun 12 '21 at 17:01
Then you definitely don't need the pst packages, as they are for postscript. – John Kormylo Jun 13 '21 at 15:36
could you please look at this question here https://tex.stackexchange.com/questions/600942/drawing-a-very-long-commutative-diagram I asked it as your code does not give me what I want, I hope this question clarify to you what I want. – Happy Jun 13 '21 at 17:30

score 2 · Accepted Answer · answered Jun 14 '21 at 08:11

With tikz-cd, only first few nodes (since contents of others is unknown):

\documentclass{article}
\usepackage{tikz-cd}
\begin{document}
    [
\begin{tikzcd}[sep=large]
M   \rar \dar["\mathrm{Pinch}" ' ]
    \drar[dashed, "\beta_1 + \beta_2 + \beta_3 = 0", sloped]
    & * \rar \dar 
        \arrow[dd, phantom, ""{coordinate, name=U}]
        & \Sigma M \rar \dar

            & \Sigma M \dar

              \arrow[ddlll, dashed,
                  to path={ -- ([xshift=5em]\tikztostart.east)
                            |- ([yshift=-3em]U) [near end]\tikztonodes
                            -| ([xshift=-2em]\tikztotarget.west)
                            -- (\tikztotarget)}]    \

M \vee M \vee M \rar[swap, "{(\beta_1,\beta_2,\beta_3)}" ] 
  \arrow[d, phantom, ""{coordinate, name=V}]
    & N \rar 
         & N' \rar 
            & \Sigma M\vee \Sigma M\vee \Sigma M 
              \arrow[ddlll, "{(\beta_1,\beta_2,\beta_3)}" ',
                  to path={ -- ([xshift=1em]\tikztostart.east)
                            |- (V) [near end]\tikztonodes
                            -| ([xshift=-3em]\tikztotarget.west)
                            -- (\tikztotarget)}]    \

\rar \dar
  & * \rar \dar
      & * \rar[dashed] \dar
          & ~                                     \

N \rar
        & N' \rar
            & \Sigma M\vee \Sigma M\vee \Sigma M    \rar[dashed]
                & ~
\end{tikzcd}
    ]
\end{document}

How to make a commutative diagram with 16 rectangles and to take not more than half a page?

2 Answers2

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