# Latest **URL:** https://forum.graphviz.org/latest.md?page=2 [Latest](https://forum.graphviz.org/latest.md) · [Categories](https://forum.graphviz.org/categories.md) **Page:** 3 --- ## [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 --- ## [Gvedit: library 'util\_C' not found](https://forum.graphviz.org/t/gvedit-library-util-c-not-found/3231)
**Author:** [@dallured](https://forum.graphviz.org/u/dallured)\ **Replies:** 14\ **Last updated:** [November 8, 2025, 9:40pm UTC](https://forum.graphviz.org/t/gvedit-library-util-c-not-found/3231 "2025-11-08T21:40:46Z")
I am doing maintenance for Graphviz on MacPorts, trying to update from version 12, to current version 14.0.2. Part of the build is in effect, a stand-alone Autotools build of gvedit. This error hits when linking the exe… --- ## [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.… --- ## [Why is this digraph label incorrect? graphviz says "syntax error"](https://forum.graphviz.org/t/why-is-this-digraph-label-incorrect-graphviz-says-syntax-error/3218)
**Author:** [@folkert](https://forum.graphviz.org/u/folkert)\ **Replies:** 1\ **Last updated:** [October 17, 2025, 1:16pm UTC](https://forum.graphviz.org/t/why-is-this-digraph-label-incorrect-graphviz-says-syntax-error/3218 "2025-10-17T13:16:42Z")
Hi, I’ve got the following node definition in a .dot file: 21 \[label=\<\AttributeCreator\_5 \[AttributeCreator\]\\
\\\
\\\ **Author:** [@steve.jorgensen-kt](https://forum.graphviz.org/u/steve.jorgensen-kt)\ **Replies:** 4\ **Last updated:** [October 12, 2025, 9:28pm UTC](https://forum.graphviz.org/t/where-are-build-instructions-for-13-1-2/3213 "2025-10-12T21:28:57Z") Where are instructions to build Graphviz 13.1.2? After downloading, README directs me to doc/build.html, and that just redirects to Building | Graphviz which is for the latest version and clearly is not the same as for … --- ## [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… --- ## [Memory leak caused by agwrite](https://forum.graphviz.org/t/memory-leak-caused-by-agwrite/3210)
**Author:** [@aleqsonder](https://forum.graphviz.org/u/aleqsonder)\ **Replies:** 12\ **Last updated:** [October 8, 2025, 11:46am UTC](https://forum.graphviz.org/t/memory-leak-caused-by-agwrite/3210 "2025-10-08T11:46:58Z")
Hello! I was implementing a C-function converting abstract syntax tree to Agraph\_t \* to output it then in the DOT format. I called the agwrite function to print the converted tree out as a graph and used the agclose to… --- ## [How I built a Time Machine (with GraphViz)](https://forum.graphviz.org/t/how-i-built-a-time-machine-with-graphviz/3212)
**Author:** [@oliversalzburg](https://forum.graphviz.org/u/oliversalzburg)\ **Replies:** 0\ **Last updated:** [October 5, 2025, 12:11pm UTC](https://forum.graphviz.org/t/how-i-built-a-time-machine-with-graphviz/3212 "2025-10-05T12:11:17Z")
As a follow-up to Dot is no longer my friend. What can I do? (10h SVG Render Process) - #23 by oliversalzburg, I decided to document part of my project in English for a wider audience, and posted it on my blog. Here i… --- ## [Kittens Game Tech Tree](https://forum.graphviz.org/t/kittens-game-tech-tree/3211)
**Author:** [@oliversalzburg](https://forum.graphviz.org/u/oliversalzburg)\ **Replies:** 0\ **Last updated:** [October 5, 2025, 11:56am UTC](https://forum.graphviz.org/t/kittens-game-tech-tree/3211 "2025-10-05T11:56:33Z")
In a precursor to another project, I built a visualization of different technology options as they become available throughout the game. There was never really a goal in building this, as I was only experimenting with di… --- ## [Problem running autogen.sh on macOS](https://forum.graphviz.org/t/problem-running-autogen-sh-on-macos/3192)
**Author:** [@Robert\_Hairgrove](https://forum.graphviz.org/u/Robert_Hairgrove)\ **Replies:** 11\ **Last updated:** [October 4, 2025, 3:45pm UTC](https://forum.graphviz.org/t/problem-running-autogen-sh-on-macos/3192 "2025-10-04T15:45:59Z")
I have cloned the latest code from GitLab to my MacBook Air running Sequoia version 15.7. Running ./autogen.sh exits with the errors shown at the end of the output: configure.ac:213: the top level configure.ac:185: erro… --- ## [Cannot use Graphviz as lib on windows with C++](https://forum.graphviz.org/t/cannot-use-graphviz-as-lib-on-windows-with-c/1960)
**Author:** [@SadE](https://forum.graphviz.org/u/SadE)\ **Replies:** 2\ **Last updated:** [October 3, 2025, 2:30pm UTC](https://forum.graphviz.org/t/cannot-use-graphviz-as-lib-on-windows-with-c/1960 "2025-10-03T14:30:35Z")
Hi, I’m trying to setup a usable graphviz lib setup on VS 2022. I added all the 35 lib provided in the windows zip, the header files. I can compile a little basic example, but at the linking i got this error : |Error|L… --- ## [Bug with latest release (v14.0.0)?](https://forum.graphviz.org/t/bug-with-latest-release-v14-0-0/3208)
**Author:** [@brettc](https://forum.graphviz.org/u/brettc)\ **Replies:** 3\ **Last updated:** [October 3, 2025, 9:21am UTC](https://forum.graphviz.org/t/bug-with-latest-release-v14-0-0/3208 "2025-10-03T09:21:44Z")
I just upgraded to v14 via brew and my dot images are broken. \[dot\] digraph { graph \[bgcolor=transparent dpi=180 nodesep=0.2 pad=0.1 rankdir=TB ranksep=0.2\] node \[color=“#4361ee” fillcolor=transparent fixedsize=None … --- ## [Connected clusters](https://forum.graphviz.org/t/connected-clusters/3207)
**Author:** [@gf-charles](https://forum.graphviz.org/u/gf-charles)\ **Replies:** 2\ **Last updated:** [October 2, 2025, 5:39pm UTC](https://forum.graphviz.org/t/connected-clusters/3207 "2025-10-02T17:39:20Z")
digraph G { subgraph cluster\_something { label = "something"; thing1; thing2; } subgraph cluster\_other { label = "other"; thing3; thing4; } cluster\_something -\> cluster\_other; } H… --- ## [Using graphviz for layouting only](https://forum.graphviz.org/t/using-graphviz-for-layouting-only/3196)
**Author:** [@Ced](https://forum.graphviz.org/u/Ced)\ **Replies:** 5\ **Last updated:** [September 30, 2025, 8:23am UTC](https://forum.graphviz.org/t/using-graphviz-for-layouting-only/3196 "2025-09-30T08:23:02Z")
Hello, I’m currently implementing a graphical editor that displays elements connected through ports like shown on the following picture: I’m currently looking for a way to allow the user to automatically layout the e… --- ## [Configure script looking for \`pangoft2\` library on macOS](https://forum.graphviz.org/t/configure-script-looking-for-pangoft2-library-on-macos/3191)
**Author:** [@Robert\_Hairgrove](https://forum.graphviz.org/u/Robert_Hairgrove)\ **Replies:** 2\ **Last updated:** [September 20, 2025, 7:59am UTC](https://forum.graphviz.org/t/configure-script-looking-for-pangoft2-library-on-macos/3191 "2025-09-20T07:59:32Z")
Trying to build Graphviz 13.2 on macOS. If I’m not mistaken, pangocairo is built with the quartz backend on macOS and does not use freetype on that platform. I actually built and installed libfreetype2 on this system, b… --- ## [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… --- ## [Licence for libANN is GPL and not LGPL?](https://forum.graphviz.org/t/licence-for-libann-is-gpl-and-not-lgpl/3188)
**Author:** [@Robert\_Hairgrove](https://forum.graphviz.org/u/Robert_Hairgrove)\ **Replies:** 15\ **Last updated:** [September 19, 2025, 12:59am UTC](https://forum.graphviz.org/t/licence-for-libann-is-gpl-and-not-lgpl/3188 "2025-09-19T00:59:59Z")
I have been looking for ways of building GraphViz from sources on my new MacBook Air without using Homebrew or MacPorts, if possible. We use the GraphViz libraries in another project built with the Qt frameworks. It has … --- ## [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 … --- ## [Bin packing with graphwiz](https://forum.graphviz.org/t/bin-packing-with-graphwiz/3184)
**Author:** [@Magfr](https://forum.graphviz.org/u/Magfr)\ **Replies:** 3\ **Last updated:** [September 11, 2025, 9:08am UTC](https://forum.graphviz.org/t/bin-packing-with-graphwiz/3184 "2025-09-11T09:08:32Z")
So, I have a number of unconnected graphs of the form L1→N1→N2; L2→N3; … where each N node have one entry and maybe one exit edge. As the number of nodes grow the vast majority of them are of the form La→Nb; Associated … --- ## [Full Tree of Life](https://forum.graphviz.org/t/full-tree-of-life/3168)
**Author:** [@Podbrushkin](https://forum.graphviz.org/u/Podbrushkin)\ **Replies:** 10\ **Last updated:** [September 10, 2025, 12:01am UTC](https://forum.graphviz.org/t/full-tree-of-life/3168 "2025-09-10T00:01:57Z")
I have used “-Ksfdp -GK=0.2 -Goverlap=true” to successfully layout all known life (4.5M taxa) in just 40 minutes, but I seek for improvement. If you have any suggestions on how to make small branches more readable and w… --- ## [Why didn't change \`CDT\_VERSION\`](https://forum.graphviz.org/t/why-didnt-change-cdt-version/3166)
**Author:** [@FeelUs](https://forum.graphviz.org/u/FeelUs)\ **Replies:** 5\ **Last updated:** [September 9, 2025, 12:14am UTC](https://forum.graphviz.org/t/why-didnt-change-cdt-version/3166 "2025-09-09T00:14:06Z")
I look at history of libcdt API: https://gitlab.com/graphviz/graphviz/-/blob/8.1.0/lib/cdt/cdt.h?ref\_type=tags#L87 https://gitlab.com/graphviz/graphviz/-/blob/9.0.0/lib/cdt/cdt.h?ref\_type=tags#L89 https://gitlab.com/g… --- ## [Excel to Graphviz v8.0 has been released](https://forum.graphviz.org/t/excel-to-graphviz-v8-0-has-been-released/3181)
**Author:** [@jjlong](https://forum.graphviz.org/u/jjlong)\ **Replies:** 0\ **Last updated:** [September 6, 2025, 11:41pm UTC](https://forum.graphviz.org/t/excel-to-graphviz-v8-0-has-been-released/3181 "2025-09-06T23:41:24Z")
Excel to Graphviz v8.0 is here! Download | Website | Github | Donate This release of the Relationship Visualizer spreadsheet introduces enhancements across the Style Designer, Styles, and SQL capabilities, and improved… --- ## [Default value for agattr(g,AGNODE,"name",NULL)](https://forum.graphviz.org/t/default-value-for-agattr-g-agnode-name-null/3180)
**Author:** [@FeelUs](https://forum.graphviz.org/u/FeelUs)\ **Replies:** 6\ **Last updated:** [September 6, 2025, 1:38pm UTC](https://forum.graphviz.org/t/default-value-for-agattr-g-agnode-name-null/3180 "2025-09-06T13:38:10Z")
How does agattr/agattr\_text(g,AGNODE,"name",NULL) behave if the nodes of the graph do not have the “name” attribute? If some nodes of the graph have the “name” attribute, what will be the default value for nodes withou… --- ## [Connect longer sequential edges first or group edges from same source node first](https://forum.graphviz.org/t/connect-longer-sequential-edges-first-or-group-edges-from-same-source-node-first/3177)
**Author:** [@ljh](https://forum.graphviz.org/u/ljh)\ **Replies:** 2\ **Last updated:** [September 4, 2025, 10:48am UTC](https://forum.graphviz.org/t/connect-longer-sequential-edges-first-or-group-edges-from-same-source-node-first/3177 "2025-09-04T10:48:03Z")
Hi community, Should I connect longer sequential edges first or group edges from same source node first as shown in cluster1 and cluster2 respectively? The results are a bit different. In cluster1, the node and edge o… --- ## [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… --- ## [Writing Layout Plugins](https://forum.graphviz.org/t/writing-layout-plugins/3174)
**Author:** [@FeelUs](https://forum.graphviz.org/u/FeelUs)\ **Replies:** 2\ **Last updated:** [September 2, 2025, 6:38pm UTC](https://forum.graphviz.org/t/writing-layout-plugins/3174 "2025-09-02T18:38:15Z")
I read writing-layout-plugins guide and I can’t find functions like setEdgeType, common\_init\_node, gv\_nodesize etc in /usr/include/graphviz (both in versions 2.44 and 13.1) (but nm -D /usr/lib/x86\_64-linux-gnu/libgvc.so… --- ## [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 … --- ## [Large tree visualization](https://forum.graphviz.org/t/large-tree-visualization/3167)
**Author:** [@Podbrushkin](https://forum.graphviz.org/u/Podbrushkin)\ **Replies:** 2\ **Last updated:** [August 29, 2025, 1:49pm UTC](https://forum.graphviz.org/t/large-tree-visualization/3167 "2025-08-29T13:49:57Z")
I have a tree of ~4M of nodes which I want to visualize, and I did it successfully with sfdp layout, but I want improvement. Nodes are too dense, they gravitate to center too much. Below are visualizations of a tree whi… --- ## [How to set edge trajectory](https://forum.graphviz.org/t/how-to-set-edge-trajectory/3164)
**Author:** [@FeelUs](https://forum.graphviz.org/u/FeelUs)\ **Replies:** 6\ **Last updated:** [August 27, 2025, 11:13pm UTC](https://forum.graphviz.org/t/how-to-set-edge-trajectory/3164 "2025-08-27T23:13:56Z")
I have 4 nodes in row (A,B,C,D). Let’s say I want to route path A-\>D so that it goes from top of B and bottom of C. I’ve tried to do this: digraph G { A \[pos="0,0!", shape=star\]; B \[pos="100,0!", shape=circle\]; C \[p… [Previous page](https://forum.graphviz.org/latest.md?page=1) [Next page](https://forum.graphviz.org/latest.md?page=3)