# Read graphml
**URL:** https://discourse.julialang.org/t/read-graphml/91085
**Category:** General Usage
**Created:** [December 1, 2022, 9:52am UTC](https://discourse.julialang.org/t/read-graphml/91085 "2022-12-01T09:52:02Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 1, 2022, 9:52am UTC](https://discourse.julialang.org/t/read-graphml/91085/1 "2022-12-01T09:52:02Z")
I have graphs in Graphml format and I am trying to read the graph as follow
`loadgraph("tailorS1.graphml",graph,GraphIO.GraphML.GraphMLFormat())`
but I got the following error:
`LoadError: UndefVarError: GraphML not defined`
---
### Author:  [@cormullion](https://discourse.julialang.org/u/cormullion)
#### Post date: [December 1, 2022, 3:37pm UTC](https://discourse.julialang.org/t/read-graphml/91085/2 "2022-12-01T15:37:17Z")
did you do
```julia
using GraphIO.GraphML
```
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 2, 2022, 10:08am UTC](https://discourse.julialang.org/t/read-graphml/91085/3 "2022-12-02T10:08:37Z")
yes, I am including
`using GraphIO.GraphML`
then
`loadgraph("tailorS1.graphml",Gr,GraphIO.GraphML.GraphMLFormat())`
still the same error messeage
---
### Author:  [@cormullion](https://discourse.julialang.org/u/cormullion)
#### Post date: [December 2, 2022, 10:24am UTC](https://discourse.julialang.org/t/read-graphml/91085/4 "2022-12-02T10:24:19Z")
OK… How about this:
```julia
using Graphs
using GraphIO
using EzXML
d = loadgraphs("/tmp/test.gml", GraphMLFormat())
```
The documentation could do with some work…
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 2, 2022, 11:07am UTC](https://discourse.julialang.org/t/read-graphml/91085/5 "2022-12-02T11:07:47Z")
with this it gives the following error:
`LoadError: UndefVarError: loadgraphs not defined`
---
### Author:  [@cormullion](https://discourse.julialang.org/u/cormullion)
#### Post date: [December 2, 2022, 11:14am UTC](https://discourse.julialang.org/t/read-graphml/91085/6 "2022-12-02T11:14:34Z")
OK, this is as far as I go, not being a GraphIO user. Versions here are:
```nohighlight
[8f5d6c58] EzXML v1.1.0
[aa1b3936] GraphIO v0.6.0
[86223c79] Graphs v1.7.4
[dd2b58c7] GridGraphs v0.9.0
[cd156443] Karnak v0.3.0
[626554b9] MetaGraphs v0.7.1
[46757867] NetworkLayout v0.4.4
[47aef6b3] SimpleWeightedGraphs v1.2.1
```
I think you’re going to have to don your explorer’s outfit and start exploring the GraphIO source to find out how it works. 🙂
---
### Author:  [@jd-foster](https://discourse.julialang.org/u/jd-foster)
#### Post date: [December 2, 2022, 11:38am UTC](https://discourse.julialang.org/t/read-graphml/91085/7 "2022-12-02T11:38:01Z")
Putting it all together?
```julia
using Graphs
using GraphIO
using EzXML
d = loadgraph("tailorS1.graphml", GraphIO.GraphML.GraphMLFormat())
```
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 2, 2022, 1:18pm UTC](https://discourse.julialang.org/t/read-graphml/91085/8 "2022-12-02T13:18:07Z")
Not really with this I got the following error:
> LoadError: MethodError: no method matching loadgraph(::String, ::GraphIO.GraphML.GraphMLFormat)
---
### Author:  [@cormullion](https://discourse.julialang.org/u/cormullion)
#### Post date: [December 2, 2022, 1:26pm UTC](https://discourse.julialang.org/t/read-graphml/91085/9 "2022-12-02T13:26:13Z")
Could you show the output of `] status` (ie your package status), and the code you’re running, and the complete error message… ? This might help people diagnose what’s going on.
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 2, 2022, 1:33pm UTC](https://discourse.julialang.org/t/read-graphml/91085/10 "2022-12-02T13:33:53Z")
the code is simply the following
```julia
using Graphs
using GraphIO
using EzXML
d = loadgraph("tailorS1.graphml", GraphIO.GraphML.GraphMLFormat())
```
and the error message is
```julia
ERROR: LoadError: MethodError: no method matching loadgraph(::String, ::GraphIO.GraphML.GraphMLFormat)
Closest candidates are:
loadgraph(::AbstractString) at C:\Users\Ahmad Anaqreh\.julia\packages\LightGraphs\IgJif\src\persistence\common.jl:18
loadgraph(::AbstractString, ::AbstractString) at C:\Users\Ahmad Anaqreh\.julia\packages\LightGraphs\IgJif\src\persistence\common.jl:19
loadgraph(::AbstractString, ::AbstractString, ::LightGraphs.AbstractGraphFormat) at C:\Users\Ahmad Anaqreh\.julia\packages\LightGraphs\IgJif\src\persistence\common.jl:13
...
Stacktrace:
[1] top-level scope
@ E:\Julia\test100.jl:4
[2] eval
@ .\boot.jl:373 [inlined]
[3] include_string(mapexpr::typeof(identity), mod::Module, code::String, filename::String)
@ Base .\loading.jl:1196
in expression starting at E:\Julia\test100.jl:4
```
---
### Author:  [@cormullion](https://discourse.julialang.org/u/cormullion)
#### Post date: [December 2, 2022, 1:39pm UTC](https://discourse.julialang.org/t/read-graphml/91085/11 "2022-12-02T13:39:34Z")
Package status?
LightGraphs should be Graphs I think.
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 2, 2022, 1:48pm UTC](https://discourse.julialang.org/t/read-graphml/91085/12 "2022-12-02T13:48:06Z")
unfortunately, either Graphs or Lightgraphs both give the same error
---
### Author:  [@empet](https://discourse.julialang.org/u/empet)
#### Post date: [December 2, 2022, 7:42pm UTC](https://discourse.julialang.org/t/read-graphml/91085/13 "2022-12-02T19:42:10Z")
I had the same problem with reading a gml file and couldn’t read it until I passed `gname` as “digraph” to loadgraph:
```julia
G = loadgraph("data/gstrang_descendants.gml", "digraph", GraphIO.GML.GMLFormat())
```
This line [https://github.com/JuliaGraphs/GraphIO.jl/blob/master/src/GraphML/GraphML.jl#L133](https://github.com/JuliaGraphs/GraphIO.jl/blob/master/src/GraphML/GraphML.jl#L133)
shows a similar method for loading a GraphML, which by [[http://graphml.graphdrawing.org/](http://graphml.graphdrawing.org/)], can be directed, undirected, mixed, hypergraph, and so on.
From `?loadgraph` we find out that `gname is graph-format dependent`.
Hence you should inspect what graph type is recorded in your graphml file.
---
### Author:  [@empet](https://discourse.julialang.org/u/empet)
#### Post date: [December 3, 2022, 6:36pm UTC](https://discourse.julialang.org/t/read-graphml/91085/14 "2022-12-03T18:36:53Z")
I succeeded to read a GraphML file, after installing EzXML.jl, as it is required at
[https://github.com/JuliaGraphs/GraphIO.jl/blob/master/src/deprecations.jl#L13](https://github.com/JuliaGraphs/GraphIO.jl/blob/master/src/deprecations.jl#L13)
```julia
using Graphs, GraphIO
using EzXML
#file downloaded from https://github.com/krlawrence/graph/blob/master/sample-data/air-routes-latest.graphml
G = loadgraph("data/air-routes-latest.graphml", "routes", GraphIO.GraphML.GraphMLFormat())
```
I identified the graph name, “routes”, searching for graph id in the graphml file.
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 5, 2022, 9:40am UTC](https://discourse.julialang.org/t/read-graphml/91085/15 "2022-12-05T09:40:16Z")
Sorry, I don’t get the idea of installing EzXML.jl as required at the link you mentioned, I install it as any other Julia package
---
### Author:  [@empet](https://discourse.julialang.org/u/empet)
#### Post date: [December 5, 2022, 11:47am UTC](https://discourse.julialang.org/t/read-graphml/91085/16 "2022-12-05T11:47:22Z")
Yes, you should install it as usually.
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 5, 2022, 1:05pm UTC](https://discourse.julialang.org/t/read-graphml/91085/17 "2022-12-05T13:05:06Z")
Sorry, but I did exactly the same as you did and still get the same error message, here is my code :
```julia
using Graphs, GraphIO
using EzXML
G = loadgraph("tailorS1.graphml", "tailor", GraphIO.GraphML.GraphMLFormat())
```
and here is the graph
```julia
```
Maybe I am doing somthing not ok or the graph is not ok
---
### Author:  [@empet](https://discourse.julialang.org/u/empet)
#### Post date: [December 5, 2022, 1:24pm UTC](https://discourse.julialang.org/t/read-graphml/91085/18 "2022-12-05T13:24:26Z")
Your graph id is “G”, hence pass “G” as gname to loadgraph:
```julia
G = loadgraph("tailorS1.graphml", "G", GraphIO.GraphML.GraphMLFormat())
```
---
### Author:  [@ahmad88](https://discourse.julialang.org/u/ahmad88)
#### Post date: [December 5, 2022, 1:27pm UTC](https://discourse.julialang.org/t/read-graphml/91085/19 "2022-12-05T13:27:20Z")
still with that I got an error messege:
`G= loadgraph("tailorS1.graphml", "G", GraphIO.GraphML.GraphMLFormat())`
```julia
ERROR: LoadError: MethodError: no method matching loadgraph(::String, ::String, ::GraphIO.GraphML.GraphMLFormat)
Closest candidates are:
loadgraph(::AbstractString, ::AbstractString) at C:\Users\Ahmad Anaqreh\.julia\packages\LightGraphs\IgJif\src\persistence\common.jl:19
loadgraph(::AbstractString, ::AbstractString, ::LightGraphs.AbstractGraphFormat) at C:\Users\Ahmad Anaqreh\.julia\packages\LightGraphs\IgJif\src\persistence\common.jl:13
loadgraph(::AbstractString) at C:\Users\Ahmad Anaqreh\.julia\packages\LightGraphs\IgJif\src\persistence\common.jl:18
...
Stacktrace:
[1] top-level scope
@ E:\Julia\test100.jl:4
[2] eval
@ .\boot.jl:373 [inlined]
[3] include_string(mapexpr::typeof(identity), mod::Module, code::String, filename::String)
@ Base .\loading.jl:1196
in expression starting at E:\Julia\test100.jl:4
```
---
### Author:  [@empet](https://discourse.julialang.org/u/empet)
#### Post date: [December 5, 2022, 1:33pm UTC](https://discourse.julialang.org/t/read-graphml/91085/20 "2022-12-05T13:33:11Z")
I think you have an old version of GraphIO or Graphs:
I have GraphIO version = “0.6.0”, Graphs version = “1.7.4”, and EzXML “1.1.0”
[Next page](https://discourse.julialang.org/t/read-graphml/91085.md?page=2)