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JuliaAttic / OldGraphs.jl

Working with graphs in Julia
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Error and warning when plotting graph #113

Open prcastro opened 10 years ago

prcastro commented 10 years ago

Using Julia 0.3 (1 day old), I got the following message when runing plot(g):

WARNING: writesto(cmd,args...) is deprecated, use open(cmd,"w",args...) instead.
ERROR: could not spawn `neato -Tx11`: no such file or directory (ENOENT)
pozorvlak commented 10 years ago

The warning's something that's been in the pipeline for a while, but which we should now fix - thanks! It looks like the error's occurring because you don't have GraphViz installed - we rely on GraphViz for plotting. Try installing it and see if the error goes away.

prcastro commented 10 years ago

That solved the problem! Can I close the issue, or better leave it open until the warning is solved? Thanks!

pozorvlak commented 10 years ago

Excellent! Leave the issue open, I'll fix the warning and close it then.

bermanmaxim commented 10 years ago

It might be worth noting that I get a deprectated warning when plotting graphs under v0.3:

WARNING: writesto(cmd,args...) is deprecated, use open(cmd,"w",args...) instead.
 in plot at /.../.julia/v0.3/Graphs/src/dot.jl:76

(see issue julia#6948)

lssimoes commented 8 years ago

I'm having the following error when trying to run the first example code

julia> using Graphs
INFO: Recompiling stale cache file /home/kaslu/.julia/lib/v0.4/DataStructures.ji for module DataStructures.

julia> g = simple_graph(3)
Directed Graph (3 vertices, 0 edges)

julia> add_edge!(g, 1, 2)
edge [1]: 1 -- 2

julia> add_edge!(g, 3, 2)
edge [2]: 3 -- 2

julia> add_edge!(g, 3, 1)
edge [3]: 3 -- 1

julia> plot(g)

ERROR: could not spawn `neato -Tx11`: no such file or directory (ENOENT)

Is it related to this issue? My Julia version is 

julia> versioninfo()
Julia Version 0.4.5
Commit 2ac304d (2016-03-18 00:58 UTC)
Platform Info:
  System: Linux (x86_64-unknown-linux-gnu)
  CPU: Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz
  WORD_SIZE: 64
  BLAS: libopenblas (DYNAMIC_ARCH NO_AFFINITY Sandybridge)
  LAPACK: libopenblas
  LIBM: libm
  LLVM: libLLVM-3.3
paulstey commented 8 years ago

I'm having exactly the same error as @kaslusimoes using the example code he linked in the post above.

Here is my version info:

julia> versioninfo()
Julia Version 0.4.5
Commit 2ac304d (2016-03-18 00:58 UTC)
Platform Info:
  System: Darwin (x86_64-apple-darwin13.4.0)
  CPU: Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Haswell)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.3

Does anyone have a fix?

lssimoes commented 8 years ago

@paulstey it seems to me that installing GraphViz, such as @pozorvlak said, solves the problem

I guess we could try to make a pull request changing the default error behaviour and explaining this situation whenever one encounters such issue. I'll try it myself later

paulstey commented 8 years ago

@kaslusimoes yes, that did seem to be one issue. But now I'm getting a different error message concerning x11. 

julia> plot(g)
Format: "x11" not recognized. Use one of: bmp canon cgimage cmap cmapx cmapx_np dot eps exr fig gif gv icns ico imap imap_np ismap jp2 jpe jpeg jpg pct pdf pic pict plain plain-ext png pov ps ps2 psd sgi svg svgz tga tif tiff tk vml vmlz xdot xdot1.2 xdot1.4
ERROR: write: broken pipe (EPIPE)
 in yieldto at /Applications/Julia-0.4.5.app/Contents/Resources/julia/lib/julia/sys.dylib
 in wait at /Applications/Julia-0.4.5.app/Contents/Resources/julia/lib/julia/sys.dylib
 in stream_wait at /Applications/Julia-0.4.5.app/Contents/Resources/julia/lib/julia/sys.dylib
 in uv_write at stream.jl:962
 in buffer_or_write at stream.jl:972
 in write at stream.jl:1011
 in write at ascii.jl:99
 in to_dot at /Users/pstey/.julia/v0.4/Graphs/src/dot.jl:26
 in plot at /Users/pstey/.julia/v0.4/Graphs/src/dot.jl:92

Did you have this issue?

lssimoes commented 8 years ago

Sorry, no idea =/

kmsquire commented 8 years ago

See #172

nil-8 commented 7 years ago

Should this issue be resolved now? If I try to plot a graph, I get

ERROR: could not spawn neato -Tx11: no such file or directory (ENOENT)

Installing GraphViz fails for me but that is a different issue.

pozorvlak commented 7 years ago

We could make the warning clearer, I guess, but that's already pretty penetrable (and Googleable). I'd be in favour of closing this, but I'm no longer a maintainer - thoughts, everyone?