Error `viz(mesh)` when `mesh` isa SimpleMesh

[maucejo]

Hi,

I am just trying to use Meshes.jl to work with and to visualize results coming from experimental data.
While the vast majority of the functions and commands I use from documentation, I ran errors when I tried the following example:

# works
points = [(0,0), (1,0), (0,1), (1,1), (0.25,0.5), (0.75,0.5)]
tris  = connect.([(1,5,3), (4,6,2)], Triangle)
quads = connect.([(1,2,6,5), (4,3,5,6)], Quadrangle)
mesh = SimpleMesh(points, [tris; quads])

# doesn't work
viz(mesh, showsegments = true)

The error message is the following:

ERROR: MethodError: no method matching viz(::SimpleMesh{𝔼{…}, CoordRefSystems.Cartesian2D{…}, Vector{…}, SimpleTopology{…}}; showsegments::Bool)
The function `viz` exists, but no method is defined for this combination of argument types.

Finally, here is my versioninfo()

Julia Version 1.12.1
Commit ba1e628ee49 (2025-10-17 13:02 UTC)
Build Info:
  Official https://julialang.org release
Platform Info:
  OS: macOS (arm64-apple-darwin24.0.0)
  CPU: 16 × Apple M4 Max
  WORD_SIZE: 64
  LLVM: libLLVM-18.1.7 (ORCJIT, apple-m4)
  GC: Built with stock GC
Threads: 1 default, 1 interactive, 1 GC (on 12 virtual cores)
Environment:
  JULIA_EDITOR = code
  JULIA_VSCODE_REPL = 1
  JULIA_PKG_SERVER = https://juliahub.com

Thank you for your help.

[juliohm]

Did you load a Makie.jl backend in the same session? Em ter., 4 de nov. de 2025, 04:23, Mathieu Aucejo ***@***.***> escreveu:

…

*maucejo* created an issue (JuliaGeometry/Meshes.jl#1267) <#1267> Hi, I am just trying to use Meshes.jl to work with and to visualize results coming from experimental data. While the vast majority of the functions and commands I use from documentation, I ran errors when I tried the following example: # works points = [(0,0), (1,0), (0,1), (1,1), (0.25,0.5), (0.75,0.5)] tris = connect.([(1,5,3), (4,6,2)], Triangle) quads = connect.([(1,2,6,5), (4,3,5,6)], Quadrangle) mesh = SimpleMesh(points, [tris; quads]) # doesn't workviz(mesh, showsegments = true) The error message is the following: ERROR: MethodError: no method matching viz(::SimpleMesh{𝔼{…}, CoordRefSystems.Cartesian2D{…}, Vector{…}, SimpleTopology{…}}; showsegments::Bool) The function `viz` exists, but no method is defined for this combination of argument types. Finally, here is my versioninfo() Julia Version 1.12.1 Commit ba1e628ee49 (2025-10-17 13:02 UTC) Build Info: Official https://julialang.org release Platform Info: OS: macOS (arm64-apple-darwin24.0.0) CPU: 16 × Apple M4 Max WORD_SIZE: 64 LLVM: libLLVM-18.1.7 (ORCJIT, apple-m4) GC: Built with stock GC Threads: 1 default, 1 interactive, 1 GC (on 12 virtual cores) Environment: JULIA_EDITOR = code JULIA_VSCODE_REPL = 1 JULIA_PKG_SERVER = https://juliahub.com Thank you for your help. — Reply to this email directly, view it on GitHub <#1267>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAZQW3NMOHGG27K75UPEO6L33BH5PAVCNFSM6AAAAACLCDS3HGVHI2DSMVQWIX3LMV43ASLTON2WKOZTGU4DKMBXGE3DENY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[maucejo]

@juliohm

You are absolutely right I forgot to load Makie !!!!! I do this at first and forgot to do this once I restarted my REPL.
Sorry !