Wow, wonderful work!<p>As an additional information about already existing execution plan visualisation tools:<p>Depesz has written the classical PostgreSQL Execution Plan Visualiser years ago.<p><a href="http:&#x2F;&#x2F;explain.depesz.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;explain.depesz.com&#x2F;</a><p>Of cause it is not so nicely pretty as the one from Tatiyants, but I use it now and then and it became a standard explain visualisation tool for many PostgreSQL users.<p>The table format from <a href="http:&#x2F;&#x2F;explain.depesz.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;explain.depesz.com&#x2F;</a> is very useful and one can understand a lot of details about your execution plan without the need to visualise in the form of a graph.<p>Also the default execution plan visualiser in pgAdmin looks really cool.