possible worlds diagrams « PhilTeX Forums

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possible worlds diagrams

(5 posts)

Aldo Antonelli
Member

Any suggestions as to the quickest way to create diagrams of the kind used to represent possible world models? I know TikZ and PGF can do anything under the sun, but I was looking for something with a bit less of a learning curve.

Posted 7 months ago #
Chris E
Member

Sure, how about drawing them outside LaTeX? I got a Mac application called VectorDesigner with a software bundle, and it works well for me for making vector drawings that can be used in LaTeX and -- like TikZ, but unlike picture files -- will scale up crisply. I can't say whether VectorDesigner is the best app, or even a good value, but I bet something similar would work for you.

Posted 7 months ago #
Aldo Antonelli
Member

Actually, it's not too difficult to get something decent-looking using TikZ. I can post a solution, if there is interest, and maybe people can improve on it.

Posted 7 months ago #
Kevin Klement
Key Master

When I had an occasion to do this, I used a combination of the pstricks and qtree packages. For my results, see the handouts here (e.g., handout 6 and 7). I'd be happy to share the source code for those, though they're a bit messy, since I made these when I was first learning LaTeX.

Posted 7 months ago #
Aldo Antonelli
Member
I used TikZ to generate the following diagram: .

The code that generated looks like this:

` \begin{tikzpicture}[node distance=2cm, auto, thick]
```
\node (w1) {$w_1 \, \bullet$} ; 

\node (w2) [right of=w1]{$\bullet$}; 

\node (w3) [right of=w2] {$\bullet$} edge [in=60,out=120,loop] () ;

\draw[->] (w1) to node {} (w2); 

\draw[->] (w2) to node {} (w3);

\draw[->, bend left] (w1) to node [swap] {$w_2$} (w3); 

\path node at ( 4.5,0) {$w_3$}; 

\path node at ( 0.25,-0.5) {$p_1$}; 

\path node at ( 2,-0.5) {$p_1,p_2$}; 

\path node at ( 4,-0.5) {$p_1,p_2,p_3$};
```
\end{tikzpicture} `

The commands are pretty self-explanatory: first define a bunch of nodes, arranged on the grid with 2cm spacing, then raw some arrows. It took me a while to figure out how to place text exactly where I wanted, using the \path command.

Attachments
1. PWorlds.png (8.1 KB, 0 downloads) 7 months old
Posted 7 months ago #
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