OWLVIZ Display problems

[sidkgp]

OwlViz is displaying the entire hierarchy at (0,0). Not sure how to move this to center.

[matthewhorridge]

Do you have GraphViz installed on your system? You need this, and you need to set the path to the "DOT" application in the OWLViz preferences. This is set on the OWLViz tab on the preference dialog. On my system the path is "/usr/local/bin/dot".

[iisai1821]

I had the same problem; I thought I had GraphViz installed already and was wrong. Downloading the zip file and pointing the preferences setting to dot.exe fixed it. Thanks!

[macedoj]

For Ubuntu users getting this error nowadays (2020):

1. Run:

$ sudo apt install graphviz

2. Then restart Protégé;
3. Done!

Source: https://graphviz.org/download/

[mgraauw]

Had the same problem with Windows, could not get Owlviz to work with Graphviz 2.44.1 (current stable), installed from Anaconda (Graphviz 2.38), that did work.

[drdavide]

Same problem, thank you @mgraauw, anaconda pkgs works in Windows 10

[MartinKoelbl]

I had the same trouble in win10. Adjust inside of Protege in menu File/Preferences/OWLViz the path to dot.exe I had to name the path and the program name C:...\Graphviz\bin\dot.exe

[hpl002]

Find the realpath to the dotfile.

For those installing via homebrew on osx:

For some reason the dotfile was not symlinked into /usr/local/bin

Test by trying to get the realpath via which graphviz. If found then just use this, if not then get the realpath yourself or create the symbolic link.

For a quick hack i ended up with: /usr/local/Cellar/graphviz/2.46.1/bin/dot

[HjoshM]

I have the real path to the dot app, but still cannot see the graph. What am I missing?

[MarkOcean]

@HjoshM Install it https://graphviz.org/download/ Restart Protege.

Path: C:\Program Files\Graphviz\bin\dot.exe

[ikramlalmi]

I tried these commands to help me locate the DOT file path on my mac. It was not: "/usr/local/bin/dot" on my system.

dot -V

dot - graphviz version 2.49.2 (20211016.1639)

which dot

/opt/homebrew/bin/dot

I had installed Graphviz, but I was still running into trouble finding the right path. I am using Protege, and I had to modify the path for OwlViz since it was displaying the entire hierarchy at (0,0). I copied the path that I got by running the which dot command to the OWLViz tab on the preference dialog, and restarted protege and it worked perfectly! Good luck!

[SergeMIT]

Probably User rights linked issue. I has the same issue on Windows due to GraphViz being installed under C:\Program Files (x86)\Graphviz
=> For windows, the xxx\Graphviz\bin\dot.exe must be placed under a folder with "normal rights access" and the file no be "read only" => I moved the dot.exe file under C:\Users\Serge\OneDrive\Documents\XXXX, adapted protege preferences (File/Preferences/OwlViz => Path to dot file: C:\Users\Serge\OneDrive\Documents\XXXX\dot.exe Then after a relaunch, the issue was solved. Good luck!

[Sophal24]

I tried these commands to help me locate the DOT file path on my mac. It was not: "/usr/local/bin/dot" on my system.

dot -V

dot - graphviz version 2.49.2 (20211016.1639)

which dot

/opt/homebrew/bin/dot

I had installed Graphviz, but I was still running into trouble finding the right path. I am using Protege, and I had to modify the path for OwlViz since it was displaying the entire hierarchy at (0,0). I copied the path that I got by running the which dot command to the OWLViz tab on the preference dialog, and restarted protege and it worked perfectly! Good luck!

(mac m1) This works for me. Check path of dot and change it in Protégé OWLViz, Path to DOT.

[Misbah-khan786]

@HjoshM Install it https://graphviz.org/download/ Restart Protege.

Path: C:\Program Files\Graphviz\bin\dot.exe

I have installed the Graphicviz installed it in the same directory and set the same directory in the file--> owlviz /path to dot (C:\Program Files\Graphviz\bin\dot.exe) but the issue is still there

[MarkOcean]

I have installed the Graphicviz installed it in the same directory and set the same directory in the file--> owlviz /path to dot (C:\Program Files\Graphviz\bin\dot.exe) but the issue is still there

I would try restarting the computer and/or reinstalling Protege itself. I don't remember if I did it myself, but I think so. I hope it helps you.

[garciadiazjaime]

In os x I used brew

brew install graphviz

and then adjust the dot path:

 which dot
/opt/homebrew/bin/dot