ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Wed, 10 Dec 2014 10:07:32 +0100Orientation of poset plot in Sage 6.3 vs 6.4https://ask.sagemath.org/question/25192/orientation-of-poset-plot-in-sage-63-vs-64/In older versions of Sage (6.3 and below), plotting a poset (or an acyclic graph with layout = "acyclic") gives a directed graph with arrows pointing up.
However, it seems like in Sage 6.4, the arrows now point down (and the bottom element appears at the top).
Is this a bug? Or are there any options I can tweak to reverse the orientation? I would expect the "correct" behaviour to be the one with the arrows pointing up; the Sage reference on [layout_acyclic](http://www.sagemath.org/doc/reference/graphs/sage/graphs/digraph.html#sage.graphs.digraph.DiGraph.layout_acyclic) seems to agree.
(I noticed the discrepancy while running Sage 6.3 on the [Sage Cell Server](http://sagecell.sagemath.org/) and Sage 6.4 on [Sagemath Cloud](https://cloud.sagemath.com/))
Here's some code you can try:
Poset({0:[2],1:[2],2:[]}).show()Wed, 10 Dec 2014 10:07:32 +0100https://ask.sagemath.org/question/25192/orientation-of-poset-plot-in-sage-63-vs-64/