# Uncategorized **URL:** https://forum.graphviz.org/c/uncategorized/1.md [Latest](https://forum.graphviz.org/latest.md) · [Categories](https://forum.graphviz.org/categories.md) --- ## [Welcome to the Graphviz forum](https://forum.graphviz.org/t/welcome-to-the-graphviz-forum/7)
**Author:** [@system](https://forum.graphviz.org/u/system)\ **Replies:** 0\ **Last updated:** [March 23, 2020, 3:25pm UTC](https://forum.graphviz.org/t/welcome-to-the-graphviz-forum/7 "2020-03-23T15:25:45Z")
This is a place for everyone to meet, discuss and share their work, and help one another. --- ## [Sfdp crash, regression in 15.1.1](https://forum.graphviz.org/t/sfdp-crash-regression-in-15-1-1/3392)
**Author:** [@gertburger](https://forum.graphviz.org/u/gertburger)\ **Replies:** 3\ **Last updated:** [September 5, 2026, 1:09am UTC](https://forum.graphviz.org/t/sfdp-crash-regression-in-15-1-1/3392 "2026-09-05T01:09:59Z")
Given the graph test.gv with content: digraph { n0 -\> n1; n0 -\> n2; n0 -\> n3; n0 -\> n4; n0 -\> n5; n0 -\> n6; n0 -\> n7; n0 -\> n8; n0 -\> n9; n0 -\> n10; n0 -\> n11; n0 -\> n12; n13 -\> n14; n13 -\> n7; n15 -\> n… --- ## [LaTex formulas in python API](https://forum.graphviz.org/t/latex-formulas-in-python-api/1021)
**Author:** [@sebas-a](https://forum.graphviz.org/u/sebas-a)\ **Replies:** 6\ **Last updated:** [September 3, 2026, 11:35pm UTC](https://forum.graphviz.org/t/latex-formulas-in-python-api/1021 "2026-09-03T23:35:21Z")
Dear Graphviz community, Is there a way to include latex formulas as labels in the Python API of Graphviz? I have looked at the examples: Examples — graphviz 0.20.1 documentation, but there is nothing similar to includ… --- ## [Need help with network diagram example](https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396)
**Author:** [@Vasyl](https://forum.graphviz.org/u/Vasyl)\ **Replies:** 3\ **Last updated:** [August 30, 2026, 7:32pm UTC](https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396 "2026-08-30T19:32:22Z")
Dear All, can somebody help me to reproduce the example from Gallery. I need namely circles with nodes on them. I mean this one: A Network Map | Graphviz I tried a lot of different parameters but cannot see that beaut… --- ## [Wrapping Graphviz into a No-Code, Keyboard-Driven Interface](https://forum.graphviz.org/t/wrapping-graphviz-into-a-no-code-keyboard-driven-interface/3365)
**Author:** [@Toki](https://forum.graphviz.org/u/Toki)\ **Replies:** 2\ **Last updated:** [June 9, 2026, 12:59pm UTC](https://forum.graphviz.org/t/wrapping-graphviz-into-a-no-code-keyboard-driven-interface/3365 "2026-06-09T12:59:35Z")
Hi Graphviz community, I wanted to share a desktop tool I have built and deployed, as it literally could not exist without Graphviz. For years, as a researcher, Graphviz has been my irreplaceable anchor for causal thin… --- ## [Graph layout rendering issues with media-heavy nodes?](https://forum.graphviz.org/t/graph-layout-rendering-issues-with-media-heavy-nodes/3258)
**Author:** [@rihanna9](https://forum.graphviz.org/u/rihanna9)\ **Replies:** 6\ **Last updated:** [January 22, 2026, 10:43am UTC](https://forum.graphviz.org/t/graph-layout-rendering-issues-with-media-heavy-nodes/3258 "2026-01-22T10:43:05Z")
Hi everyone, hope you’re doing well. I’m running into an issue where some graphviz diagrams start behaving oddly once I include nodes that reference heavier media or external resources. Layouts sometimes take longer to … --- ## [How to set Thickness of Node Outline](https://forum.graphviz.org/t/how-to-set-thickness-of-node-outline/3243)
**Author:** [@PaltryProgrammer](https://forum.graphviz.org/u/PaltryProgrammer)\ **Replies:** 3\ **Last updated:** [November 17, 2025, 3:44pm UTC](https://forum.graphviz.org/t/how-to-set-thickness-of-node-outline/3243 "2025-11-17T15:44:41Z")
greetings & kind regards may i please request is it possible to set the thickness of the line outlining a node . i have been unable to locate any such attribute under node - attributes . thank you kindly --- ## [Batch detecting of crossing edge](https://forum.graphviz.org/t/batch-detecting-of-crossing-edge/3229)
**Author:** [@absalom](https://forum.graphviz.org/u/absalom)\ **Replies:** 4\ **Last updated:** [November 5, 2025, 5:35pm UTC](https://forum.graphviz.org/t/batch-detecting-of-crossing-edge/3229 "2025-11-05T17:35:03Z")
Hi, When assigning problems to my students in graph theory, I sometimes write a script to generate dozens of different variants in order to prevent cheating. However, I don’t want to give fundamentally different exercis… --- ## [Build bug: libtcldot.so apparently not honoring build prefix](https://forum.graphviz.org/t/build-bug-libtcldot-so-apparently-not-honoring-build-prefix/3214)
**Author:** [@steve.jorgensen-kt](https://forum.graphviz.org/u/steve.jorgensen-kt)\ **Replies:** 2\ **Last updated:** [October 28, 2025, 1:07am UTC](https://forum.graphviz.org/t/build-bug-libtcldot-so-apparently-not-honoring-build-prefix/3214 "2025-10-28T01:07:54Z")
When I build Graphviz 14.0.1 and then run my tool to check that dependencies are correct, I see that libtcldot.so is depending versions of shared libraries that are installed on my system instead of the ones being built.… --- ## [Aligning nodes horizontally along a timeline](https://forum.graphviz.org/t/aligning-nodes-horizontally-along-a-timeline/2154)
**Author:** [@j\_jones](https://forum.graphviz.org/u/j_jones)\ **Replies:** 7\ **Last updated:** [October 8, 2025, 2:29pm UTC](https://forum.graphviz.org/t/aligning-nodes-horizontally-along-a-timeline/2154 "2025-10-08T14:29:14Z")
I apologize, I’m a complete newbie at Graphviz and haven’t seen an example which fits what I have in mind. I would like create a visualization of events happening in parallel along a timeline. The timeline would run al… --- ## [Where should PangoFt2 be installed?](https://forum.graphviz.org/t/where-should-pangoft2-be-installed/3190)
**Author:** [@Robert\_Hairgrove](https://forum.graphviz.org/u/Robert_Hairgrove)\ **Replies:** 0\ **Last updated:** [September 19, 2025, 2:27pm UTC](https://forum.graphviz.org/t/where-should-pangoft2-be-installed/3190 "2025-09-19T14:27:59Z")
I am trying to get GraphViz 13.1.2 to build from source on macOS Sequoia 15.7. When I run configure without any options, it seems to find Pango and Cairo and Pangocairo OK, but configure fails with this error: No packag… --- ## [Dot html label \<\> ok in v12, syntax error in v13](https://forum.graphviz.org/t/dot-html-label-ok-in-v12-syntax-error-in-v13/3185)
**Author:** [@tmoog](https://forum.graphviz.org/u/tmoog)\ **Replies:** 2\ **Last updated:** [September 13, 2025, 7:36pm UTC](https://forum.graphviz.org/t/dot-html-label-ok-in-v12-syntax-error-in-v13/3185 "2025-09-13T19:36:34Z")
I am running Windows 10 Home 64 bit 22H2 19045.6216 using a pre-compiled version of graphviz downloaded from graphviz.org. The following dot file is accepted by graphviz version 12.2.1 (20241206.2353) but fails with a … --- ## [The History of Graphviz](https://forum.graphviz.org/t/the-history-of-graphviz/765)
**Author:** [@magjac](https://forum.graphviz.org/u/magjac)\ **Replies:** 14\ **Last updated:** [September 3, 2025, 11:48am UTC](https://forum.graphviz.org/t/the-history-of-graphviz/765 "2025-09-03T11:48:17Z")
Has the history of Graphviz ever been written? When and how did it all start? Why? Who were involved? What tools were used? Graphviz - Wikipedia contains a reference to: 2. Eleftherios Koutsofios and Stephen North. Dra… --- ## [Wasm build of 8.1.0 Graphviz](https://forum.graphviz.org/t/wasm-build-of-8-1-0-graphviz/1760)
**Author:** [@Taylorh140](https://forum.graphviz.org/u/Taylorh140)\ **Replies:** 9\ **Last updated:** [September 1, 2025, 6:38am UTC](https://forum.graphviz.org/t/wasm-build-of-8-1-0-graphviz/1760 "2025-09-01T06:38:49Z")
Can the latest graphviz be compiled with emcc? Specifically dot\_static would be useful. I’m looking to build a wasm library from just a few components at a time. I’m looking to produce a very small subset of graphviz … --- ## [Diagrama de flujo de procesos](https://forum.graphviz.org/t/diagrama-de-flujo-de-procesos/3110)
**Author:** [@Marybomba](https://forum.graphviz.org/u/Marybomba)\ **Replies:** 3\ **Last updated:** [July 27, 2025, 5:02am UTC](https://forum.graphviz.org/t/diagrama-de-flujo-de-procesos/3110 "2025-07-27T05:02:40Z")
graph TD A\[Inicio: Recepción de Materias Primas\] → B\[Selección y Pesado de Ingredientes\] B → C{Copoazú, Cacao, Azúcar, Maicena, Leche, Esencia de Vainilla, Sal} C --\> D\[Preparación de Pulpa de Copoazú\] D --\>|Pulpa hom… --- ## [Create only horizontal node alligning inside multiple clusters for column data lineage](https://forum.graphviz.org/t/create-only-horizontal-node-alligning-inside-multiple-clusters-for-column-data-lineage/2988)
**Author:** [@hasdfkl](https://forum.graphviz.org/u/hasdfkl)\ **Replies:** 1\ **Last updated:** [June 3, 2025, 7:37pm UTC](https://forum.graphviz.org/t/create-only-horizontal-node-alligning-inside-multiple-clusters-for-column-data-lineage/2988 "2025-06-03T19:37:55Z")
I would like to visualise the column data lineage of some sql codes. So far I have the next graph in graphviz: digraph { graph\[splines = ortho, rankdir="LR", layout = dot, ranksep=1 \] … --- ## [Flow chart vertical alignment, nodes on each side of conditional block](https://forum.graphviz.org/t/flow-chart-vertical-alignment-nodes-on-each-side-of-conditional-block/2960)
**Author:** [@pouet](https://forum.graphviz.org/u/pouet)\ **Replies:** 2\ **Last updated:** [May 13, 2025, 11:57am UTC](https://forum.graphviz.org/t/flow-chart-vertical-alignment-nodes-on-each-side-of-conditional-block/2960 "2025-05-13T11:57:28Z")
I’d like to have all the blocks (A to G) in my flow chart vertically aligned and vertical branches on each sides of my bottom conditional block. But with my current solution, obtained after much trial and errors and sea… --- ## [Request of ECCN for Graphviz](https://forum.graphviz.org/t/request-of-eccn-for-graphviz/2894)
**Author:** [@ca66](https://forum.graphviz.org/u/ca66)\ **Replies:** 3\ **Last updated:** [April 8, 2025, 3:38pm UTC](https://forum.graphviz.org/t/request-of-eccn-for-graphviz/2894 "2025-04-08T15:38:18Z")
I would like to use Graphviz to visualize chemical reaction pathways from my Cantera simulations. However, to be allowed to install it on my work computer, my company IT department requests the ECCN (Export Control Class… --- ## [Creating heirarchical graphs w/clusters](https://forum.graphviz.org/t/creating-heirarchical-graphs-w-clusters/2876)
**Author:** [@emazurek](https://forum.graphviz.org/u/emazurek)\ **Replies:** 6\ **Last updated:** [April 3, 2025, 1:40am UTC](https://forum.graphviz.org/t/creating-heirarchical-graphs-w-clusters/2876 "2025-04-03T01:40:03Z")
I’m trying to create a network graph that needs to be hierarchical. The thingxa and thingxb are two seperate nodes but need to be joined side by side. There are 3 levels as shown. There might be up to 20 or so thing gro… --- ## [Align Clusters at the top](https://forum.graphviz.org/t/align-clusters-at-the-top/2863)
**Author:** [@bobbyr1](https://forum.graphviz.org/u/bobbyr1)\ **Replies:** 2\ **Last updated:** [March 26, 2025, 7:38am UTC](https://forum.graphviz.org/t/align-clusters-at-the-top/2863 "2025-03-26T07:38:13Z")
I’m trying to do something quite simple but I’ve spent a couple of hours with no success - hoping someone in this forum has a solution. Essentially I’m trying to move process #2 so that it’s aligned with process #1 at t… --- ## [TikZ (and LaTeX) driver for Graphviz?](https://forum.graphviz.org/t/tikz-and-latex-driver-for-graphviz/577)
**Author:** [@steveroush](https://forum.graphviz.org/u/steveroush)\ **Replies:** 24\ **Last updated:** [March 21, 2025, 3:38pm UTC](https://forum.graphviz.org/t/tikz-and-latex-driver-for-graphviz/577 "2025-03-21T15:38:58Z")
\[Note: I’ve never written a single document using TeX, LaTeX, or TikZ, so bear with my mistakes\] In the last year or so I’ve noted several comments that it would be nice if Graphviz produced TikZ output. TikZ (PGF/TikZ… --- ## [Does a subgraph (non-cluster!) group the nodes?](https://forum.graphviz.org/t/does-a-subgraph-non-cluster-group-the-nodes/2701)
**Author:** [@Vithanco](https://forum.graphviz.org/u/Vithanco)\ **Replies:** 12\ **Last updated:** [March 20, 2025, 2:10pm UTC](https://forum.graphviz.org/t/does-a-subgraph-non-cluster-group-the-nodes/2701 "2025-03-20T14:10:13Z")
Question regarding DOT Language | Graphviz Subgraphs play three roles in Graphviz. First, a subgraph can be used to represent graph structure, indicating that certain nodes and edges should be grouped together. But i… --- ## [Cluster alignment with DOT](https://forum.graphviz.org/t/cluster-alignment-with-dot/2704)
**Author:** [@Fsalvi](https://forum.graphviz.org/u/Fsalvi)\ **Replies:** 5\ **Last updated:** [February 8, 2025, 9:36am UTC](https://forum.graphviz.org/t/cluster-alignment-with-dot/2704 "2025-02-08T09:36:16Z")
\[dot verbose=true fit=true\] digraph G { rankdir=TB node \[fontname="Helvetica,Arial,sans-serif"\] edge \[fontname="Helvetica,Arial,sans-serif"\] graph \[fontsize=30 labelloc="t" label="" splines=false ratio = auto\] … --- ## [Python's graphviz module](https://forum.graphviz.org/t/pythons-graphviz-module/2697)
**Author:** [@jjon](https://forum.graphviz.org/u/jjon)\ **Replies:** 0\ **Last updated:** [February 6, 2025, 9:16pm UTC](https://forum.graphviz.org/t/pythons-graphviz-module/2697 "2025-02-06T21:16:47Z")
Doing this in dot is trivial \[dot\] strict digraph G { node\[shape=ellipse\]; NodeI → NodeII \[label = “prop1”\]; NodeIII → NodeI \[label = “prop3”\]; {rank=same; NodeII → NodeIII \[label=“prop2”\];} } \[/dot\] ie: stric… --- ## [Is GXL file format supported?](https://forum.graphviz.org/t/is-gxl-file-format-supported/2692)
**Author:** [@sprezzatura](https://forum.graphviz.org/u/sprezzatura)\ **Replies:** 13\ **Last updated:** [February 6, 2025, 3:59pm UTC](https://forum.graphviz.org/t/is-gxl-file-format-supported/2692 "2025-02-06T15:59:28Z")
The 2014 “Using Graphviz as a Library” by Emden R. Gansner mentions GXL (Graph eXchange Language) output format. But when I run DOT it rejects it as not one of the supported file formats. Has it been dropped? I also se… --- ## [Minor release 12.2.2?](https://forum.graphviz.org/t/minor-release-12-2-2/2661)
**Author:** [@dallured](https://forum.graphviz.org/u/dallured)\ **Replies:** 6\ **Last updated:** [January 16, 2025, 9:22am UTC](https://forum.graphviz.org/t/minor-release-12-2-2/2661 "2025-01-16T09:22:02Z")
In the change log I see an upcoming major release 13.0, with many breaking changes. How much trouble would it be to make an intermediate minor release with only recent bug fixes, and no breaking changes? --- ## [Unable to render images](https://forum.graphviz.org/t/unable-to-render-images/1823)
**Author:** [@andymc\_91](https://forum.graphviz.org/u/andymc_91)\ **Replies:** 4\ **Last updated:** [January 14, 2025, 6:18am UTC](https://forum.graphviz.org/t/unable-to-render-images/1823 "2025-01-14T06:18:24Z")
Hi, im new to Graphviz and going through the installation process for diagrams as code. I have followed the installation for Graphviz and Diagrams (Installation · Diagrams). When i run the code and generate the file, it… --- ## [Is there free custom layout engines?](https://forum.graphviz.org/t/is-there-free-custom-layout-engines/2634)
**Author:** [@gmtk](https://forum.graphviz.org/u/gmtk)\ **Replies:** 8\ **Last updated:** [December 27, 2024, 10:06pm UTC](https://forum.graphviz.org/t/is-there-free-custom-layout-engines/2634 "2024-12-27T22:06:56Z")
Hello Hère we can see it’s possible to create custom layout engines. https://graphviz.org/docs/layouts/ Any free engines available? For my data, my favorite ones are: circo, fdp, sfdp. --- ## [Create multiple graphics](https://forum.graphviz.org/t/create-multiple-graphics/1392)
**Author:** [@Didi5](https://forum.graphviz.org/u/Didi5)\ **Replies:** 7\ **Last updated:** [December 27, 2024, 4:11pm UTC](https://forum.graphviz.org/t/create-multiple-graphics/1392 "2024-12-27T16:11:33Z")
Is there a possibility to create multiple gv files from one gv file or open the content with multiple graphic files. Kind regards --- ## [\[solved\] Same attribute value for all elements of a graph?](https://forum.graphviz.org/t/solved-same-attribute-value-for-all-elements-of-a-graph/2633)
**Author:** [@gmtk](https://forum.graphviz.org/u/gmtk)\ **Replies:** 5\ **Last updated:** [December 26, 2024, 4:35am UTC](https://forum.graphviz.org/t/solved-same-attribute-value-for-all-elements-of-a-graph/2633 "2024-12-26T04:35:41Z")
Hello Is it possible to set the same attribute value for all elements of a graph? (Example: same fontsize) I saw https://graphviz.org/docs/graph/ But how can we do it? graph \[fontsize=“20pt”\] { … makes an error. Th… [Next page](https://forum.graphviz.org/c/uncategorized/1.md?page=1)