it&#39;s very easy, as long as you stick to basic layout: place [rankdir][1]=&quot;LR&quot; near top definition. Something like

    digraph unix {
      size=&quot;6,6&quot;;
      rankdir=&quot;LR&quot;;
      ...
    }

  [1]: https://graphviz.gitlab.io/_pages/doc/info/attrs.html#d:rankdir


^^

i get this error if i would connect to any OpenVPN Network.

    All TAP-Win32 adapters on this system are currently in use.

**Here is a Screenshot.**
-&gt; http://www.abload.de/image.php?img=openvpn_failbhjde.jpg

**What i did before i post this?**

 - Removing the TAP-Win32 Adapter OAS
 - Reinstall openvpn
 - Reinstall openvpn gui

I have the problem on two computers.
**Why?**


**My System:**

 - Windows 7 Professional 64-Bit
 - Normal Network Interface
 - VirtualBox Network Interface
 - TAP-Win32 Adapter OAS

All *legal*. All *up-to-date* (newest, stable version).


**Solution**

 1. Download OpenVPN manually: http://openvpn.net/index.php/download/community-downloads.html

:)

OpenVPN failed connection / All TAP-Win32 adapters on this system are currently in use

In Eclipse Juno, I installed the latest m2e plugin (1.2.20120903-1050).  In preferences, I have added jdk1.7.0_11 in Java -&gt; Installed JREs -&gt; Add, and then specified the location (`C:\Program Files\Java\jdk1.7.0_11`).  When I create a new Maven project and run it, I get a warning:

&gt;Build path specifies execution environment J2SE-1.5. There are no JREs installed in the workspace that are strictly compatible with this environment.

I am not sure how to resolve this.

I believe it is a Maven problem because I do not have this error when I run normal Java projects.  I read [here][1] that I should change the &quot;maven-compiler-plugin.pom&quot; and change the source and target from 1.5 to something more appropriate.  In my case, 1.7.  I have done this, but I still get the warning.

  [1]: http://mikechencodingnotes.blogspot.com/2011/11/m2e-compiler-j2se-15-warning-message.html

Maven &quot;build path specifies execution environment J2SE-1.5&quot;, even though I changed it to 1.7

I&#39;ve made a tree in the dot language, similar to the one [here][1].

Is there any way I could get the tree to expand to the right, instead of downwards (so the root node is on the left and children go along to the right).


  [1]: https://graphviz.gitlab.io/_pages/Gallery/directed/unix.html

Horizontal Trees in Graphviz

<p>I've made a tree in the dot language, similar to the one <a href="https://graphviz.gitlab.io/_pages/Gallery/directed/unix.html" target="_blank" rel="noopener noreferrer">here</a>.</p>
<p>Is there any way I could get the tree to expand to the right, instead of downwards (so the root node is on the left and children go along to the right).</p>


When I run a very simple code with pydot

    import pydot
    graph = pydot.Dot(graph_type=&#39;graph&#39;)

    for i in range(3):

      edge = pydot.Edge(&quot;king&quot;, &quot;lord%d&quot; % i)
      graph.add_edge(edge)

    vassal_num = 0
    for i in range(3):
      for j in range(2):
        edge = pydot.Edge(&quot;lord%d&quot; % i, &quot;vassal%d&quot; % vassal_num)
        graph.add_edge(edge)
        vassal_num += 1

    graph.write_png(&#39;example1_graph.png&#39;)


It prints me the error message:

    Couldn&#39;t import dot_parser, loading of dot files will not be possible.


I&#39;m using python 2.7.3




pydot and graphviz error: Couldn&#39;t import dot_parser, loading of dot files will not be possible

I am using Graphviz 2.30. Horizontal positioning for labels works out, but in a few cases, a modified angle would be desired.

For instance, I tried various values for angle here but without any effect:

    ABB -&gt; ABACUS[label=&quot;applied&quot;, fontname=&quot;Arial&quot;, fontsize=15, labelangle=110];

How can I display labels in line with (i.e. parallel to) the edge when using a Graphviz `digraph`. 

The entire `digraph` will not be posted due to an NDA. In addition, the rotation will be applied only to a few labels.

I have read similar threads like [this][1] or [another][2] (or a thread about alignment for instance) but without any help regarding my issue.


  [1]: https://stackoverflow.com/questions/2350617/how-to-place-edge-labels-on-edge-in-graphviz
  [2]: https://stackoverflow.com/questions/12934763/graphviz-edge-label-too-close-to-another-edge

Display labels in line with the edge when using Graphviz

I am following the exact instructions from the graphviz documentation, but I am unable to add fillcolor to nodes.

Here is my graph:

    digraph hello_world {
     node [href=&quot;javascript:void(click_node(&#39;\N&#39;))&quot;]
     node0 [label=&quot;No label&quot;,shape=box,width=0.75,height=0.75,fixedsize=true]
     node1 [label=&quot;No label&quot;,shape=box,width=0.75,height=0.75,fixedsize=true]
     node2 [label=&quot;No label&quot;,shape=box,width=0.75,height=0.75,fixedsize=true]
     node3 [label=&quot;No label&quot;,shape=box,width=0.75,height=0.75,fixedsize=true]
     nodeEdge0 [fixedsize=true,shape=diamond,label=&quot;.Nojjjj label.&quot;,fillcolor=red]
     node3 -&gt; nodeEdge0 [arrowhead=none]
     nodeEdge0 -&gt; node2
    }

Still, the graph does not set `nodeEdge0` to have a red background color.

Any ideas?

why doesn&#39;t fillcolor work with graphviz?

I have GraphViz 2.32 installed in Windows 8 and have added C:\Program Files (x86)\Graphviz2.32\bin to the System PATH variable. Still pydot is unable to find its executables.

    Traceback (most recent call last):
      File &quot;&lt;pyshell#26&gt;&quot;, line 1, in &lt;module&gt;
        graph.write_png(&#39;example1_graph.png&#39;)
      File &quot;build\bdist.win32\egg\pydot.py&quot;, line 1809, in &lt;lambda&gt;
        lambda path, f=frmt, prog=self.prog : self.write(path, format=f, prog=prog))
      File &quot;build\bdist.win32\egg\pydot.py&quot;, line 1911, in write
        dot_fd.write(self.create(prog, format))
      File &quot;build\bdist.win32\egg\pydot.py&quot;, line 1953, in create
        &#39;GraphViz\&#39;s executables not found&#39; )
    InvocationException: GraphViz&#39;s executables not found

I found this [https://code.google.com/p/pydot/issues/detail?id=65][1] but am unable to get the problem solved.


  [1]: https://code.google.com/p/pydot/issues/detail?id=65

Why is pydot unable to find GraphViz&#39;s executables in Windows 8?

In my Graphviz graph (written in DOT), I want each node to have a label, but in addition to that, I want some nodes to have a small caption denoting some other unique value for that node. For example, if this were for a history diagram, a node&#39;s label might be something like &quot;Birth of George Washington&quot; and the caption might read &quot;See also: American Revolution.&quot;

This is fairly flexible, so the caption doesn&#39;t necessarily need to be inside the node, but I do need some other way of putting text that clearly isn&#39;t part of the label (e.g. is a different size, possibly a different color) and is in a different location but is still clearly a part of the node.

Is there any way to do this?

Graphviz: Putting a Caption on a Node In Addition to a Label

I want to render several trees simultaneously and place all root nodes and all leaf nodes on the same level.

Here&#39;s an example of what I&#39;m trying to do. Root nodes A and X are on the same level, and so are leaf nodes B, D, and Z.

 ![Graph I want][1]


I unsuccessfully tried putting roots in one rank and leaves in another as follows:

    digraph G { 
    rankdir = TB;
    subgraph {
    A -&gt; B
    A -&gt; C
    C -&gt; D
    X -&gt; Y
    rank = same; A; X;
    rank = same; B; D; Y;
    } /* closing subgraph */
    }

And got this outcome where everything is on the same rank.
![enter image description here][2]

Any suggestions about what I should be trying? I&#39;ve already got roots and leaves identified.



  [1]: http://i.stack.imgur.com/rrIVk.png
  [2]: http://i.stack.imgur.com/laKxP.png

Content Type	Original Author	Original Content on Stackoverflow
Question	Peter	View Question on Stackoverflow
Solution 1 - Graphviz	CapelliC	View Answer on Stackoverflow

Horizontal Trees in Graphviz

Graphviz Problem Overview

Graphviz Solutions

Solution 1 - Graphviz

Maven "build path specifies execution environment J2SE-1.5", even though I changed it to 1.7

OpenVPN failed connection / All TAP-Win32 adapters on this system are currently in use

Attributions