# Latest **URL:** https://forum.graphviz.org/latest.md?page=1 [Latest](https://forum.graphviz.org/latest.md) · [Categories](https://forum.graphviz.org/categories.md) **Page:** 2 --- ## [Development scripts/tips location?](https://forum.graphviz.org/t/development-scripts-tips-location/3320)
**Author:** [@brianrmurphy](https://forum.graphviz.org/u/brianrmurphy)\ **Replies:** 11\ **Last updated:** [March 11, 2026, 7:36pm UTC](https://forum.graphviz.org/t/development-scripts-tips-location/3320 "2026-03-11T19:36:42Z")
I’ve been debugging Issue 1213 and friends. I’ve apparently fixed the immediate issue but have some funky intermediate output. I incrementally worked with Claude to whip up some instrumentation output (gated by DEBU… --- ## [Failed to Place Nodes from Different Clusters in the Same Rank](https://forum.graphviz.org/t/failed-to-place-nodes-from-different-clusters-in-the-same-rank/3321)
**Author:** [@The\_book](https://forum.graphviz.org/u/The_book)\ **Replies:** 1\ **Last updated:** [March 10, 2026, 2:50am UTC](https://forum.graphviz.org/t/failed-to-place-nodes-from-different-clusters-in-the-same-rank/3321 "2026-03-10T02:50:11Z")
I created a minimal example, but the errors are inconsistent, so I’m not sure if the issue is the same. \[dot verbose=true\] digraph { rankdir=TB; subgraph cluster\_A { A A-\>A1 } subgraph cluster\_B { B … --- ## [GVBINDIR and ctest](https://forum.graphviz.org/t/gvbindir-and-ctest/3317)
**Author:** [@brianrmurphy](https://forum.graphviz.org/u/brianrmurphy)\ **Replies:** 1\ **Last updated:** [March 5, 2026, 9:48pm UTC](https://forum.graphviz.org/t/gvbindir-and-ctest/3317 "2026-03-05T21:48:50Z")
I’ve noticed that environment variable GVBINDIR is used to tell ctest where to find plugins, but is not documented anywhere. I found a forum thread suggesting that this was a solution to a problem finding plugins on Ma… --- ## [Is there a CLI parameter in Graphviz to replace all labels with meaningless strings when processing a DOT file for analysis](https://forum.graphviz.org/t/is-there-a-cli-parameter-in-graphviz-to-replace-all-labels-with-meaningless-strings-when-processing-a-dot-file-for-analysis/3250)
**Author:** [@The\_book](https://forum.graphviz.org/u/The_book)\ **Replies:** 7\ **Last updated:** [March 5, 2026, 6:48am UTC](https://forum.graphviz.org/t/is-there-a-cli-parameter-in-graphviz-to-replace-all-labels-with-meaningless-strings-when-processing-a-dot-file-for-analysis/3250 "2026-03-05T06:48:07Z")
I’d like to seek help regarding an issue with one of my graphs on a forum or similar platform, but I prefer not to share the actual content directly. I recall that Graphviz might have a feature that replaces all text lab… --- ## [Layouts differ when using windows vs web](https://forum.graphviz.org/t/layouts-differ-when-using-windows-vs-web/3311)
**Author:** [@urib](https://forum.graphviz.org/u/urib)\ **Replies:** 3\ **Last updated:** [February 27, 2026, 11:26am UTC](https://forum.graphviz.org/t/layouts-differ-when-using-windows-vs-web/3311 "2026-02-27T11:26:28Z")
Complete newbie here! Why does my windows command dot -Kfdp -n -Tjpeg -Gdpi=300 -O give different result than what is rendered here in forums ? --- ## [Windows plugins?](https://forum.graphviz.org/t/windows-plugins/3309)
**Author:** [@brianrmurphy](https://forum.graphviz.org/u/brianrmurphy)\ **Replies:** 2\ **Last updated:** [February 24, 2026, 6:05pm UTC](https://forum.graphviz.org/t/windows-plugins/3309 "2026-02-24T18:05:21Z")
Now that I’ve found problems with MinGW, I’m wondering if plugins are working on other Windows builds. In particular, the MinGW .dll files are being placed far away from the index file pkgIndex.tcl so when I run manuall… --- ## [Random Number Generation](https://forum.graphviz.org/t/random-number-generation/3303)
**Author:** [@brianrmurphy](https://forum.graphviz.org/u/brianrmurphy)\ **Replies:** 5\ **Last updated:** [February 22, 2026, 8:19pm UTC](https://forum.graphviz.org/t/random-number-generation/3303 "2026-02-22T20:19:07Z")
I previously raised this issue in an issue, but I think that isn’t the best forum for discussion, so let’s discuss the rand issue here instead. To summarize that issue: I asked Gemini to look at matrix\_ops.c and suggest… --- ## [Font specification? "Times New Roman"](https://forum.graphviz.org/t/font-specification-times-new-roman/3255)
**Author:** [@brianrmurphy](https://forum.graphviz.org/u/brianrmurphy)\ **Replies:** 9\ **Last updated:** [February 22, 2026, 6:15am UTC](https://forum.graphviz.org/t/font-specification-times-new-roman/3255 "2026-02-22T06:15:32Z")
I recently have a bit of time and was thinking of trying to help improve graphviz performance, since it’s a tool I seem to use often in my work, and it hasn’t speeded up as much as computer hardware has over the past few… --- ## [Replicating Linux CI tests locally](https://forum.graphviz.org/t/replicating-linux-ci-tests-locally/3302)
**Author:** [@brianrmurphy](https://forum.graphviz.org/u/brianrmurphy)\ **Replies:** 3\ **Last updated:** [February 20, 2026, 4:59pm UTC](https://forum.graphviz.org/t/replicating-linux-ci-tests-locally/3302 "2026-02-20T16:59:31Z")
I was studying the GiitLab CI process a bit and found that it is pretty easy to run the Linux CI tests locally on a dev machine (probably even a non-Linux one, as long as the processor matches) using gitlab-ci-local and … --- ## [A "lint" program for Graphviz files](https://forum.graphviz.org/t/a-lint-program-for-graphviz-files/2209)
**Author:** [@steveroush](https://forum.graphviz.org/u/steveroush)\ **Replies:** 3\ **Last updated:** [February 12, 2026, 9:19pm UTC](https://forum.graphviz.org/t/a-lint-program-for-graphviz-files/2209 "2026-02-12T21:19:33Z")
Until a “real” lint is added to Graphviz, here is an add-on. It tries to flag attributes that are not defined for the object / engine. e.g. rankdir applied to a cluster rank used if fdp is the engine coooler=red v… --- ## [Using graphviz in gitlab](https://forum.graphviz.org/t/using-graphviz-in-gitlab/3299)
**Author:** [@gl\_probs](https://forum.graphviz.org/u/gl_probs)\ **Replies:** 2\ **Last updated:** [February 12, 2026, 4:55pm UTC](https://forum.graphviz.org/t/using-graphviz-in-gitlab/3299 "2026-02-12T16:55:36Z")
I am trying to visualize how different projects depend on one another. I think a good way to do this is to send a survey around to some project developers asking about what their inputs and outputs are and map the result… --- ## [Issues Encountered While Testing Example Code in libguide.pdf](https://forum.graphviz.org/t/issues-encountered-while-testing-example-code-in-libguide-pdf/3300)
**Author:** [@The\_book](https://forum.graphviz.org/u/The_book)\ **Replies:** 2\ **Last updated:** [February 12, 2026, 3:46pm UTC](https://forum.graphviz.org/t/issues-encountered-while-testing-example-code-in-libguide-pdf/3300 "2026-02-12T15:46:54Z")
Copying directly from the pdf is inconvenient. demo.c:13:5: error: too few arguments to function ‘agopen’ g = agopen(“g”, Agdirected); There are two parameters for agopen in the pdf, but it needs to be supplemented to… --- ## [Trouble with massive clustered graph on dot engine](https://forum.graphviz.org/t/trouble-with-massive-clustered-graph-on-dot-engine/3288)
**Author:** [@joacographer](https://forum.graphviz.org/u/joacographer)\ **Replies:** 5\ **Last updated:** [February 11, 2026, 1:08pm UTC](https://forum.graphviz.org/t/trouble-with-massive-clustered-graph-on-dot-engine/3288 "2026-02-11T13:08:29Z")
Hi GraphViz community, I’ve encountered a reproducible init\_rank / triangulation failure that I’ve narrowed down to a specific structural pattern involving clusters and cross-cluster edges. Environment GraphViz versi… --- ## [Large GraphViz test cases? Parallelization and tuning](https://forum.graphviz.org/t/large-graphviz-test-cases-parallelization-and-tuning/3257)
**Author:** [@brianrmurphy](https://forum.graphviz.org/u/brianrmurphy)\ **Replies:** 16\ **Last updated:** [February 10, 2026, 9:23pm UTC](https://forum.graphviz.org/t/large-graphviz-test-cases-parallelization-and-tuning/3257 "2026-02-10T21:23:18Z")
I’ve found some mention of a few large test case files bevy.gv and ftzz.gv, but I cannot find these files anywhere. Where might they be? I have my own test case I stumbled upon, but it’s apparently way too big to allow… --- ## [A speed-up trick for dot performance testing](https://forum.graphviz.org/t/a-speed-up-trick-for-dot-performance-testing/3298)
**Author:** [@steveroush](https://forum.graphviz.org/u/steveroush)\ **Replies:** 0\ **Last updated:** [February 10, 2026, 5:18am UTC](https://forum.graphviz.org/t/a-speed-up-trick-for-dot-performance-testing/3298 "2026-02-10T05:18:25Z")
If you are testing dot with large, slow input files using some combination of nslimit mclimit remincross searchsize to speed up the test and make it tolerable (e.g. dot 2854\_0.gv -Tsvg -v -Gnslimit=2 -Gmclimit=.22 -Gr… --- ## [Questions Regarding Function Usage in gvpr](https://forum.graphviz.org/t/questions-regarding-function-usage-in-gvpr/3297)
**Author:** [@The\_book](https://forum.graphviz.org/u/The_book)\ **Replies:** 4\ **Last updated:** [February 10, 2026, 3:13am UTC](https://forum.graphviz.org/t/questions-regarding-function-usage-in-gvpr/3297 "2026-02-10T03:13:02Z")
I am currently trying to use gvpr and have some questions, primarily related to functions. Does gvpr perform automatic type conversion when the parameter types do not match during function calls? I defined a function of… --- ## [Specifying GraphViz plugins folder under MacOS?](https://forum.graphviz.org/t/specifying-graphviz-plugins-folder-under-macos/1698)
**Author:** [@jeremyf](https://forum.graphviz.org/u/jeremyf)\ **Replies:** 8\ **Last updated:** [January 29, 2026, 4:47pm UTC](https://forum.graphviz.org/t/specifying-graphviz-plugins-folder-under-macos/1698 "2026-01-29T16:47:27Z")
Hi all, I’m maintaining a C++/Qt application that uses GraphViz to render diagrams using the “neato” plugin. Overall it’s working fine. One issue is that GraphViz needs to find the file libgvplugin\_neato\_layout.6.dyli… --- ## [Rendering Gradient Fills with More Than 2 Colors](https://forum.graphviz.org/t/rendering-gradient-fills-with-more-than-2-colors/3280)
**Author:** [@oliversalzburg](https://forum.graphviz.org/u/oliversalzburg)\ **Replies:** 0\ **Last updated:** [January 26, 2026, 3:28pm UTC](https://forum.graphviz.org/t/rendering-gradient-fills-with-more-than-2-colors/3280 "2026-01-26T15:28:03Z")
Learning that only 2 colors are supported in a gradient, was a very early, and very sad surprise in my journey with Graphviz. It took me quite a bit of time to be able to solve it for my environment, but here it finally … --- ## [Small dot as arrowtail](https://forum.graphviz.org/t/small-dot-as-arrowtail/3270)
**Author:** [@Vithanco](https://forum.graphviz.org/u/Vithanco)\ **Replies:** 2\ **Last updated:** [January 23, 2026, 2:23pm UTC](https://forum.graphviz.org/t/small-dot-as-arrowtail/3270 "2026-01-23T14:23:33Z")
I wonder, how I can create an arrowtail in the same size as here on the example page: The left side has a nice little dot. But i fear that it is simply a small node and not an arrowtail. Am I right? --- ## [Calculate D3 Graphviz height and width before rendering](https://forum.graphviz.org/t/calculate-d3-graphviz-height-and-width-before-rendering/3267)
**Author:** [@bananaapache](https://forum.graphviz.org/u/bananaapache)\ **Replies:** 1\ **Last updated:** [January 23, 2026, 1:41am UTC](https://forum.graphviz.org/t/calculate-d3-graphviz-height-and-width-before-rendering/3267 "2026-01-23T01:41:32Z")
I am fairly new to using GraphViz so I apologize if the answer to this seems obvious. For some background, I am working on a website where users can display varying sizes of graphs using d3 graphviz. I am having issues … --- ## [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 … --- ## [Dot is no longer my friend. What can I do? (10h SVG Render Process)](https://forum.graphviz.org/t/dot-is-no-longer-my-friend-what-can-i-do-10h-svg-render-process/3062)
**Author:** [@oliversalzburg](https://forum.graphviz.org/u/oliversalzburg)\ **Replies:** 23\ **Last updated:** [January 20, 2026, 9:01am UTC](https://forum.graphviz.org/t/dot-is-no-longer-my-friend-what-can-i-do-10h-svg-render-process/3062 "2026-01-20T09:01:22Z")
Long story short: Rendering universe.gv (721.8 KB) to SVG on my machine takes 10 hours (dot -v5 -O -Tsvg universe.gv). I would like to improve that, if possible. I recently started a small project to help me build up ti… --- ## [Speeding Up Graphviz - Packing large graphs](https://forum.graphviz.org/t/speeding-up-graphviz-packing-large-graphs/2240)
**Author:** [@steveroush](https://forum.graphviz.org/u/steveroush)\ **Replies:** 1\ **Last updated:** [January 7, 2026, 5:09pm UTC](https://forum.graphviz.org/t/speeding-up-graphviz-packing-large-graphs/2240 "2026-01-07T17:09:11Z")
Here is a Graphviz attribute that can significantly speed up certain inputs. The good news: it is very simple to use - just add one line to the input or the command line it is very unlikely to cause the enginr to run … --- ## [Aligning these 2 subgraphs horizontally?](https://forum.graphviz.org/t/aligning-these-2-subgraphs-horizontally/3253)
**Author:** [@keyko](https://forum.graphviz.org/u/keyko)\ **Replies:** 1\ **Last updated:** [January 3, 2026, 7:16pm UTC](https://forum.graphviz.org/t/aligning-these-2-subgraphs-horizontally/3253 "2026-01-03T19:16:39Z")
I’ve been trying get two graphs aligned. I did check this post. This is the code I’ve played with: digraph { graph \[ nodesep=1, ranksep=0.9, compound=true, newrank=true \]; rankdir=LR; … --- ## [Feature Request: Is it possible to support the rank attribute in the twopi layout?](https://forum.graphviz.org/t/feature-request-is-it-possible-to-support-the-rank-attribute-in-the-twopi-layout/3252)
**Author:** [@The\_book](https://forum.graphviz.org/u/The_book)\ **Replies:** 4\ **Last updated:** [January 1, 2026, 4:47pm UTC](https://forum.graphviz.org/t/feature-request-is-it-possible-to-support-the-rank-attribute-in-the-twopi-layout/3252 "2026-01-01T16:47:21Z")
I have three layers of nodes arranged on three concentric rings, but some third-layer nodes are directly connected to the first layer, causing Graphviz to place them in the second layer. Currently, I can work around thi… --- ## [How to make Graphviz use ~/.config/fontconfig/fonts.conf by default?](https://forum.graphviz.org/t/how-to-make-graphviz-use-config-fontconfig-fonts-conf-by-default/3227)
**Author:** [@decision-making-mike](https://forum.graphviz.org/u/decision-making-mike)\ **Replies:** 58\ **Last updated:** [December 8, 2025, 10:07pm UTC](https://forum.graphviz.org/t/how-to-make-graphviz-use-config-fontconfig-fonts-conf-by-default/3227 "2025-12-08T22:07:25Z")
I would like Graphviz to use settings from ~/.config/fontconfig/fonts.conf by default, i.e. without my need to set the fontname attribute. ~/.config/fontconfig/fonts.conf is \ \ **Author:** [@hasher44](https://forum.graphviz.org/u/hasher44)\ **Replies:** 1\ **Last updated:** [December 7, 2025, 8:14pm UTC](https://forum.graphviz.org/t/how-to-keep-node-spacing-consistent-for-a-puzzle-style-layout-in-graphviz/3249 "2025-12-07T20:14:47Z") I’ve been experimenting with a small word-connection puzzle in an attempt to replicate the visual layout of spellbeegame, where the connections are readable even when the puzzle moves and the letters remain evenly spaced… --- ## [\`radius\` attribute for ortho splines not working in the doc](https://forum.graphviz.org/t/radius-attribute-for-ortho-splines-not-working-in-the-doc/3244)
**Author:** [@kompre](https://forum.graphviz.org/u/kompre)\ **Replies:** 12\ **Last updated:** [November 23, 2025, 2:40pm UTC](https://forum.graphviz.org/t/radius-attribute-for-ortho-splines-not-working-in-the-doc/3244 "2025-11-23T14:40:55Z")
Can the edge of spline in ortho mode be rounded? According to the doc , it can via the radius attributes, but when I try to render the provided example, the corner are not rounded, as if the attributes is doing nothing. … --- ## [How to run gvedit?](https://forum.graphviz.org/t/how-to-run-gvedit/3239)
**Author:** [@decision-making-mike](https://forum.graphviz.org/u/decision-making-mike)\ **Replies:** 6\ **Last updated:** [November 21, 2025, 2:16am UTC](https://forum.graphviz.org/t/how-to-run-gvedit/3239 "2025-11-21T02:16:10Z")
I’m using Linux and Graphviz 14.0.1 (20251006.0113) (built myself). which gvedit gives nothing. man gvedit gives No manual entry for gvedit (I know that there’s the man page cmd/gvedit/gvedit.1) ./configure --help… --- ## [GraphViz DLLs on Windows](https://forum.graphviz.org/t/graphviz-dlls-on-windows/3241)
**Author:** [@Robert\_Hairgrove](https://forum.graphviz.org/u/Robert_Hairgrove)\ **Replies:** 15\ **Last updated:** [November 20, 2025, 10:20am UTC](https://forum.graphviz.org/t/graphviz-dlls-on-windows/3241 "2025-11-20T10:20:51Z")
Which GraphViz DLLs on Windows do I need to include in an installer for an app of mine which uses GraphViz as a dependency? Most of all, I just need the core engines and renderers, but there are many things of late such … [Previous page](https://forum.graphviz.org/latest.md) [Next page](https://forum.graphviz.org/latest.md?page=2)