Found the solution. The following code works as expected:<div><br></div><div><div><div><i><font color="#666666">view nodes: (self getLevel: 3) &quot;Returns all nodes on a certain level in the tree&quot;</font></i></div><div>
<i><font color="#666666"><span style="white-space:pre-wrap">	</span>forEach: [ :each |</font></i></div><div><i><font color="#666666"><span style="white-space:pre-wrap">		</span>view nodes: each recursiveChildren: false. &quot;The whole tree below me EXCLUDING myself&quot;</font></i></div>
<div><i><font color="#666666"><span style="white-space:pre-wrap">		</span>view edges: each recursiveChildren: true &quot;The whole tree below me INCLUDING myself&quot;</font></i></div><div><i><font color="#666666">      <span style="white-space:pre-wrap">			</span>from: </font></i><i><font color="#666666">#yourself </font></i></div>
<div><i><font color="#666666">      <span style="white-space:pre-wrap">			</span>toAll: [ :node | node children ].</font></i></div><div><i><font color="#666666"><span style="white-space:pre-wrap">			</span>view layout: (MOTreeMapLayoutIncubation withWeightBlock: [ :e | e model entity numberOfLinesOfCode ]).</font></i></div>
<div><i><font color="#666666"><span style="white-space:pre-wrap">		</span>].</font></i></div></div><div><i><font color="#666666"><br></font></i></div><div>The trick was to add the node itself to the edges. </div><div>The view looks as expected, but the edges are rendered despite them having visibility set to false. Will investigate...</div>
<div><br></div><div>Cheers,</div><div>Dennis</div><br><div class="gmail_quote">On Wed, Apr 18, 2012 at 10:04, Dennis Schenk <span dir="ltr">&lt;<a href="mailto:d.schenk@students.unibe.ch">d.schenk@students.unibe.ch</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>Hi,</span><div><br></div><div>The second challenge I mentioned in the mail before is related to outgoing edges stored for MONodes.</div>
<div>When I create a layout in the following way...</div>
<div><br></div><div><div><i><font color="#666666">view nodes: self nodes.</font></i></div><div><i><font color="#666666">view edges: self nodes            </font></i></div><div><i><font color="#666666">      <span style="white-space:pre-wrap">	</span>from: [ :each | each ] </font></i></div>

<div><i><font color="#666666">      <span style="white-space:pre-wrap">	</span>toAll: [ :each | each children ].</font></i></div><div><i><font color="#666666"><span style="white-space:pre-wrap">	</span>view layout: (MOTreeMapLayoutIncubation withWeightBlock: [ :e | e model entity numberOfLinesOfCode ]).</font></i></div>

</div><div><br></div><div>...Everything works as expected. Meaning every MONode has outgoing edges to its direct children defined.</div><div><br></div><div>However, if I construct a layout in the following way...</div>
<div><br></div><div><div><i><font color="#666666">view nodes: (self getLevel: 3) &quot;Returns all nodes on a certain level in the tree&quot;</font></i></div><div><i><font color="#666666"><span style="white-space:pre-wrap">	</span>forEach: [ :each |</font></i></div>

<div><i><font color="#666666"><span style="white-space:pre-wrap">		</span>view nodes: each recursiveChildren. &quot;All nodes below given node&quot;</font></i></div><div><i><font color="#666666"><span style="white-space:pre-wrap">		</span>view edges: each recursiveChildren &quot;From all nodes to all their direct children&quot;</font></i></div>

<div><i><font color="#666666">      <span style="white-space:pre-wrap">			</span>from: [ :node | node ] </font></i></div><div><i><font color="#666666">      <span style="white-space:pre-wrap">			</span>toAll: [ :node | node children ].</font></i></div>

<div><i><font color="#666666"><span style="white-space:pre-wrap">			</span>view layout: (MOTreeMapLayoutIncubation withWeightBlock: [ :e | e model entity numberOfLinesOfCode ]).</font></i></div><div><i><font color="#666666"><span style="white-space:pre-wrap">		</span>].</font></i></div>

</div><div><br></div><div><br></div><div>...So that I have multiple TreeMaps (one for each node on level 3 in the graph), the MONodes do <b>not</b> have outgoing edges defined and thus I can&#39;t render the TreeMap.</div>

<div><br></div><div>Does anyone have an idea what could cause this behavior?</div><div><br></div><div>Cheers,</div><div>Dennis</div>
</blockquote></div><br></div>