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A tool to visualize complex networks in LaTeX

License: GNU General Public License v3.0

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The color when use the option ⟨opacity⟩

The color is not satisfactory when use the option ⟨opacity⟩. I notice that when I use \Vertex[label = x_1, Math, color = blue, opacity = 0.2]{x_1}, for instance, blue turns into purple. Just as the illustration below.

Colorbar based on line width or color

Is it possible to create a color bar, that tells the range of line width values? Similarly, it would be nice to have an option that outputs colorbar based on the intensity of colors. These will be important features for creating network-based heatmaps.

\begin{tikzpicture}
\Vertices{data/vertices.csv}
\Edges[Direct]{data/edges.csv}
\end{tikzpicture}

Edge labels along edge

Greetings :)

I got the following graph:

\documentclass{standalone}
\usepackage{tikz}
\usepackage{tikz-network}

\begin{document}
\begin{tikzpicture}
    \clip (0,0) rectangle (30.0,30.0);
    \Vertex[x=29.000,y=15.000,size=2.0,color={0,77,153},opacity=0.7,label=A0,fontcolor={230,230,230},fontscale=2.286,RGB]{A0}
    \Vertex[x=22.000,y=27.124,size=2.0,color={0,77,153},opacity=0.7,label=A4,fontcolor={230,230,230},fontscale=2.286,RGB]{A4}
    \Vertex[x=8.000,y=27.124,size=2.0,color={0,77,153},opacity=0.7,label=A3,fontcolor={230,230,230},fontscale=2.286,RGB]{A3}
    \Vertex[x=1.000,y=15.000,size=2.0,color={0,77,153},opacity=0.7,label=A1,fontcolor={230,230,230},fontscale=2.286,RGB]{A1}
    \Vertex[x=8.000,y=2.876,size=2.0,color={0,77,153},opacity=0.7,label=A5,fontcolor={230,230,230},fontscale=2.286,RGB]{A5}
    \Vertex[x=22.000,y=2.876,size=2.0,color={0,77,153},opacity=0.7,label=A2,fontcolor={230,230,230},fontscale=2.286,RGB]{A2}
    \Edge[,lw=3.6871,color=purple,opacity=0.4687143150544264,bend=-8.531,label=11968.5/32460.0: 0.37,Direct](A0)(A4)
    \Edge[,lw=3.2066,color=purple,opacity=0.4206628671185051,bend=-8.531,label=10408.7/32460.0: 0.32,Direct](A0)(A3)
    \Edge[,lw=6.0346,color=purple,opacity=0.7034586157321837,bend=-8.531,label=19588.3/32460.0: 0.60,Direct](A0)(A1)
    \Edge[,lw=1.2568,color=purple,opacity=0.22568186485931396,bend=-8.531,label=4079.6/32460.0: 0.13,Direct](A0)(A5)
    \Edge[,lw=1.5525,color=purple,opacity=0.25524799753542815,bend=-8.531,label=5039.3/32460.0: 0.16,Direct](A0)(A2)
    \Edge[,lw=2.9291,color=purple,opacity=0.39291401533692316,bend=-8.531,label=11968.5/40860.0: 0.29,Direct](A4)(A0)
    \Edge[,lw=3.6119,color=purple,opacity=0.4611890194158921,bend=-8.531,label=14758.2/40860.0: 0.36,Direct](A4)(A3)
    \Edge[,lw=6.6366,color=purple,opacity=0.763656387665199,bend=-8.531,label=27117.0/40860.0: 0.66,Direct](A4)(A1)
    \Edge[,lw=1.9087,color=purple,opacity=0.29087045194974714,bend=-8.531,label=7799.0/40860.0: 0.19,Direct](A4)(A2)
    \Edge[,lw=3.4455,color=purple,opacity=0.44454540439148216,bend=-8.531,label=10408.7/30210.0: 0.34,Direct](A3)(A0)
    \Edge[,lw=4.8852,color=purple,opacity=0.5885198058038182,bend=-8.531,label=14758.2/30210.0: 0.49,Direct](A3)(A4)
    \Edge[,lw=7.1194,color=purple,opacity=0.8119392033542985,bend=-8.531,label=21507.7/30210.0: 0.71,Direct](A3)(A1)
    \Edge[,lw=1.132,color=purple,opacity=0.21319651329581812,bend=-8.531,label=3419.7/30210.0: 0.11,Direct](A3)(A5)
    \Edge[,lw=2.522,color=purple,opacity=0.3522029129427343,bend=-8.531,label=7619.1/30210.0: 0.25,Direct](A3)(A2)
    \Edge[,lw=2.9965,color=purple,opacity=0.3996522359900059,bend=-8.531,label=19588.3/65370.0: 0.30,Direct](A1)(A0)
    \Edge[,lw=4.1482,color=purple,opacity=0.5148233134465356,bend=-8.531,label=27117.0/65370.0: 0.41,Direct](A1)(A4)
    \Edge[,lw=3.2901,color=purple,opacity=0.4290145836520324,bend=-8.531,label=21507.7/65370.0: 0.33,Direct](A1)(A3)
    \Edge[,lw=1.9365,color=purple,opacity=0.29364514813115106,bend=-8.531,label=12658.6/65370.0: 0.19,Direct](A1)(A2)
    \Edge[,lw=4.945,color=purple,opacity=0.5945010101010099,bend=-8.531,label=4079.6/8250.0: 0.49,Direct](A5)(A0)
    \Edge[,lw=4.145,color=purple,opacity=0.5145010101010101,bend=-8.531,label=3419.6/8250.0: 0.41,Direct](A5)(A4)
    \Edge[,lw=4.1451,color=purple,opacity=0.5145050505050504,bend=-8.531,label=3419.7/8250.0: 0.41,Direct](A5)(A3)
    \Edge[,lw=6.6902,color=purple,opacity=0.7690242424242423,bend=-8.531,label=5519.4/8250.0: 0.67,Direct](A5)(A1)
    \Edge[,lw=2.7269,color=purple,opacity=0.3726929292929293,bend=-8.531,label=2249.7/8250.0: 0.27,Direct](A5)(A2)
    \Edge[,lw=2.3138,color=purple,opacity=0.33137511478420556,bend=-8.531,label=5039.3/21780.0: 0.23,Direct](A2)(A0)
    \Edge[,lw=3.5808,color=purple,opacity=0.45807927762473233,bend=-8.531,label=7799.0/21780.0: 0.36,Direct](A2)(A4)
    \Edge[,lw=3.4982,color=purple,opacity=0.4498186409550048,bend=-8.531,label=7619.1/21780.0: 0.35,Direct](A2)(A3)
    \Edge[,lw=5.812,color=purple,opacity=0.6812021732476283,bend=-8.531,label=12658.6/21780.0: 0.58,Direct](A2)(A1)
    \Edge[,lw=1.0329,color=purple,opacity=0.20329277624732173,bend=-8.531,label=2249.7/21780.0: 0.10,Direct](A2)(A5)
    \end{tikzpicture}   
\end{document}

PDF: test2.pdf

How can I achieve that the edge labels are (1) always along the edges and (2) manipulate the size of the white circle around the edge labels?

Similar to this graph: text.pdf

Node label colour

When I create nodes with the \node command I can change the label colour, e.g. with
\node at (0,0)[font=\footnotesize,orange]{\textbf{A}};

Is there any way to achieve this when I import node information from a .csv file through the \Vertices command?

Add Vertex boundary color (or, how to encode multiple style fields in CSV)

Hello! I am trying to set the outer color and fill color of a vertex separately - for example, setting the outline to light grey and the fill color to light blue to de-emphasize some vertices in an illustration.

The color Vertex attribute controls the fill color, but not the outline color, which remains black. Instead, it looks like I need to set the tikz style, like:

\Vertex[style={color=black!20,fill=blue!20}]{A}

This works for an individual vertex, but I cannot figure out how to add the same rules to a CSV. I've tried a few variations on:

id, x, y, label, style
v0, 0.238, 3.926, v0, black!20,fill=blue!20

Presumably this doesn't work because we can't have a comma in the CSV value. Escaping the comma, either with backslashes, {black!20,fill=blue!20}, or "{black!20,fill=blue!20}", has not worked. Breaking the single style field into two style fields hasn't worked, either. I've tried using space-separated .dat files instead of CSV, but have been unable to get \Vertices to read them.

Is there a way to accomplish what I'm trying to do? Or, ideally, would it be possible to add some kind of outlineColor attribute to tikz-network vertices to make this process much simpler? Thanks!

Bug: Vertex labels systematically prepended by "center:"

Giving tikz-network ( c21bb81 ) a try, all the examples in the manual to be plagued with this bug

I suspect some default code useful for label alignment ends up intepreted prepended to the label (escaping, missing parens or whatever reason)

Error at compiling example from the Manual tikz-network

As per example on page 26 of the manual (https://github.com/hackl/tikz-network/) when doing latexmk -pdflua -pvc or latexmk -pdfxe -pvc I get the following error below. Note: already tried #5:

! Package xkeyval Error: `R' undefined in families `vertex'.

See the xkeyval package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.6 \Vertices[RGB]{data/vertices_RGB.csv}

?

MWE:


\documentclass{article}
\usepackage{tikz-network}
\thispagestyle{empty}
\begin{document}
\begin{tikzpicture}
\Vertices[RGB]{data/vertices_RGB.csv}
\end{tikzpicture}
\end{document}

Conflict with package tikz-qtree about \Edge

Here is my code:

\usepackage{tikz-network}
\usepackage{tikz-qtree}

\begin{document}
\begin{tikzpicture}[sibling distance=0.6em]
    \Tree [.A [.B ] \edge[draw=none]; {} ]
    \Vertex[label=A]{A}
    \Vertex[label=B,x=1]{B}
    \Edge[label=6](A)(B)
\end{tikzpicture}
\end{document}

A error occured when I compiled it with xelatex.
Here is a part of output:

e:/.../mwe.tex:10: Use of \@edge doesn't match its definition.
\\Edge [#1]->\@edge [
                     #1]
l.10     \Edge[label=6]
                       (A)(B)
?

Text provided by keyword label is not searchable when using multilayer = 3d

Suggestion:

I have no idea what the cause is and also what the solution would be but I ask that when using multilayer = 3d I the text provided by the "label" option can be searchable. Because only when drawing using multilayer = 3d I can't make the vertex label searchable.
From the section "B.1.4 Simple example" extracted from the tikz-network manual according to the code below, the search works normally:

\documentclass{standalone}
\usepackage{tikz-network}
\begin{document}
\begin{tikzpicture}
\clip (0,0) rectangle (8.0,8.0);
\Vertex[x=2.868,y=5.518,size=0.5,color=red,opacity=0.7,label=Alice,position=below]{a}
\Vertex[x=1.000,y=7.000,size=0.5,color=blue,opacity=0.7,label=Bob,position=below]{b}
\Vertex[x=5.006,y=5.387,size=0.5,color=red,opacity=0.7,label=Claire,position=below]{c}
\Vertex[x=6.858,y=3.552,size=0.5,color=blue,opacity=0.7,label=Dennis,position=below]{d}
\Vertex[x=7.000,y=6.419,size=0.5,color=red,opacity=0.7,label=Esther,position=below]{e}
\Vertex[x=3.698,y=2.808,size=0.5,color=blue,opacity=0.7,label=Frank,position=below]{f}
\Vertex[x=5.551,y=1.000,size=0.5,color=blue,opacity=0.7,label=George,position=below]{g}
\Edge[,lw=1.0,bend=-8.531,Direct](a)(b)
\Edge[,lw=1.0,bend=-8.531,Direct](a)(c)
\Edge[,lw=3.0,bend=-8.531,Direct](c)(d)
\Edge[,lw=3.0,bend=-8.531,Direct](d)(e)
\Edge[,lw=3.0,bend=-8.531,Direct](e)(c)
\Edge[,lw=1.0,bend=-8.531,Direct](c)(f)
\Edge[,lw=3.0,bend=-8.531,Direct](f)(a)
\Edge[,lw=1.0,bend=-8.531,Direct](f)(g)
\Edge[,lw=1.0,bend=-8.531,Direct](g)(g)
\Edge[,lw=1.0,bend=-8.531,Direct](g)(d)
\end{tikzpicture}
\end{document}

Importing figures as layer pictures

Could you please provide an example how to import figures as background images in the layers of a multilayer network, as used in the front page example network? Also, how do you create the labels next to the layers?
If you just give the source code how to create the front image, that would be very helpful to see the necessary commands.

Allow unlimited spacing between vertices when bounded by edges

This is not really a bug, but a request (and suggestion).
I have been using


\SetCoordinates[options]
\begin {scope} [multilayer = 3d]
...
\end{scope}

...
\Plane[options, style={rotate=angle}]
...

To try to rotate both the layer and the plane (individually), and in the first code I can do it but in the second code just rotates the plane and not the layer.
But although I can rotate the layer (individually) and plane (individually) using scope, when I try to change the distance between two edge bound vertices I get the message "Dimension too large".

Add a general fontscale option

Add a command to define globally the fontscale

Edge path incompatible with arrows

When using a path= in edge specifications, issues occur in styling the arrow head, both using style= or Direct. MWE and screenshot below.

Perhaps this can be noted in the documentation.

\documentclass{standalone}
\usepackage{tikz-network}
\begin{document}

\begin{tikzpicture}
\Vertex[x=-2, y=1]{z1}
\Vertex[x=-1, y=0]{z2}

\Edge[style={-{latex}}, path={z1, {1, 1}, z2}](z1)(z2)
\end{tikzpicture}

\begin{tikzpicture}
\Vertex[x=-2, y=1]{z1}
\Vertex[x=-1, y=0]{z2}

\Edge[Direct, path={z1, {1, 1}, z2}](z1)(z2)
\end{tikzpicture}

\end{document}

Auto detect RGB values from csv file

Currently, the RGB option has to be enabled in the latex document by using:

\Edges[RGB]{edges.csv}

The library should be able to detect the RGB values directly from the csv file.

Negative interaction sign for directed edges

Hello!
Thanks for putting this great work together!
I would have one feature request in order to make your package suitable for my needs: I'm trying to draw a network where interactions are directed and can be either positive or negative which I would like to be able show graphically (showing positive interaction with a arrow head, and negative one with a dash, see here for example). Would it be possible to add this feature?
Thanks!

Feature request: forgiving an empty line in *.csv file

I am doing some modeling works, and would like to organize a set of edges into "chunks". As the *.csv format is super helpful when combined with Excel as a Viewer/Editor, I think it is a legitimate usage to leave one line blank in the edge list. This shall denote the start/end of a set of relevant edges. (Of course, I may as well use more labels to denote such set of edges.)

Currently, an empty line in the edge_list.csv file is rendered as a self-loop for the first node.

Lastly, a Thank You Note!

I have been stuck with plotting networks in tikz for years, and have found this repo in particular helpful: it helps with integrating the plotting task with the modeling practices ==> the edge-list and node-list are now ready for use at more than one occasions! This saves a lot of effort in converting the format, and helps a lot for documentation purpose!

Label disappears if RGB setting is omitted in edges.csv

I tried to omit the use of RGB in vertices.csv and edges.csv and I don't know if the label "C" was not shown to be related to this omission.

My MWE following first page example 27 from manual tikz-network.

\documentclass{article}
\usepackage{tikz-network}
\thispagestyle{empty}
\begin{document}
\begin{tikzpicture}
\Vertices{data/vertices.csv}
\Edges{data/edges.csv}
\end{tikzpicture}
\end{document}

My new settings in edges.csv omitting RGB settings

u,v,label,lw,color ,opacity,bend
A,B, ab  ,.5,red   ,   1   ,  30
B,C, bc  ,.7,blue  ,   1   , -60
B,D, bd  ,.5,blue  ,  .5   , -60
A,E, ae  , 1,green ,   1   ,  75
C,E, ce  , 2,orange,   1   ,   0
A,A, aa  ,.3,black ,  .5   ,  75

My new settings in vertices.csv omitting RGB settings


id, x, y ,size, color,opacity,label,IdAsLabel,NoLabel
 A, 0,  0, .4 , green,  .9   ,  a  ,  false  , false
 B, 1, .7, .6 ,      ,  .5   ,  b  ,  false  , false
 C, 2,  1, .8 ,orange,  .3   ,  c  ,  false  , true
 D, 2,  0, .5 ,   red,  .7   ,  d  ,  true   , false
 E,.2,1.5, .5 ,  gray,       ,  e  ,  false  , false

fontscale option for the text object

Add the fontscale option also to text objects:

\Text[fontscale=0.75]{Text}

Add options to change the arrow appearance

Add options to change the size of the arrowhead as already implemented in network2tikz, e.g. see edge_arrow_size and edge_arrow_width.

Global options for tikzpicture

Not a bug but rather the wish for an additional feature.

I'd like to be able to insert arbitrary text between \begin{tikzpicture} and the first \Vertex-Statement. In particular this would allow me to insert lines such as the following:
\SetDistanceScale{1.2} \SetVertexStyle[FillColor=blue,FillOpacity=0.7,LineOpacity=0.7,MinSize=0.5cm]
as well as comments for myself.

Especially when using a lot of options, the resulting .tex-file becomes much more readable by not repeating global options within every vertex or edge statement. It would also allow to use features for nodes, which are not implemented in tikz-network such as LineOpacity for the borders of nodes.

Several \Vertices commands in one document produce erratical behaviour

When using several \Vertices commands in the same document wrong input files are used.

MWE:

\documentclass{article}
\usepackage{tikz-network}
\begin{document}
\begin{tikzpicture}
 \Vertices{cci14.txt}
\end{tikzpicture}


\begin{tikzpicture}
 \Vertices{cci23.txt}
\end{tikzpicture}

\begin{tikzpicture}
 \Vertices{cci14.txt}
\end{tikzpicture}

\begin{tikzpicture}
 \Vertices{cci23.txt}
\end{tikzpicture}
\end{document}

This yields different output for the first and third input, which are identical.

shape C not found in the edges.csv

As pointed out at https://tex.stackexchange.com/questions/502182/shape-c-not-found-in-the-files-csv-tikz-network-package I ask your opinion @hackl and the suggestion for use of standalone in the manual examples in order to circumvent potential problems by users by compiling the same examples individually on their own. Thank you for writing this package which helps a lot to deal with and visualize the dynamics behind processes, especially with integrated information theory.

Argument Spacing When Using lw Option for \ Edge Causes Compile Error in Latexmk with Tikz-Network Package

Writing the code with no spaces between the arguments of "\Edge[h local options i](Vertex i)(Vertex j)" normally handles processing:

\documentclass{article}
\usepackage {tikz-network}
\thispagestyle {empty}
\begin {document}
\begin {tikzpicture}
\Vertex{A} \Vertex [x = 2] {B} \Vertex [x = 2, y = -1] {C}
\Edge [lw = 3pt] (A) (B)
\Edge [lw = 5pt] (A) (C)
\end {tikzpicture}
\end {document}

But if there is spacing (whatever that is) between the arguments of "\Edge[h local options i](Vertex i)" as shown below:

\documentclass{article}
\usepackage{tikz-network}
\thispagestyle {empty}
\begin {document}
\begin {tikzpicture}
\Vertex {A} \Vertex [x = 2] {B} \Vertex [x = 2, y = -1] {C}
% Case 1: space between <[lw = 3pt]> and <(A)(B)>
\Edge [lw = 3pt] (A)(B)
% Case 2 (below): or even if there is a space between <(A)> and <(C)> as below
\Edge[lw = 5pt](A) (C)
\end {tikzpicture}
\end {document}

I get the following errors in their order as is the spacing in the code above:

Case 1 - Space between <[lw = 3pt]> and <(A)(B)> returns the following error:

Runaway argument?
(A)(B) \ end {tikzpicture} \ end {document}
! File ended while scanning use of \ @edge.
<inserted text>
\pair
<*> 17.tex
       
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Case 2 - Space between <[lw = 5pt] (A)> and <(C)> returns the following error:

! Undefined control sequence.
\ pgfonlayer @ assert @ is @ active ... fonlayer @ isactive
                                                  {0} \ expandfter \ pgf @ asser ...

1.8 \ Edge [lw = 5pt] (A) (C)
                     
?

Note 1: Putting spacing between <\Edge> and <[h local options i](Vertex i)(Vertex j)> returns no error.
Note 2: Examples taken from Section 2.2, page 15 of https://ctan.org/pkg/tikz-network.
Note 3: Command latexmk and Zathura viewer were used.
Apparently everything is related to using the lw (\Edge line width size) option.
Note 4: As advised at https://tex.stackexchange.com/a/501300/178949 by user TeXnician there is apparently a guideline in the code script preventing the inclusion of spacing.

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