Note limitation of dimen attribute

diff --git a/doc/info/attrs.html b/doc/info/attrs.html
index 8c84c614cfae1d16daf419ea165fdf8c01afc667..ea21b6d82ab9529fff545a736a062384772e2f65 100644 (file)
--- a/doc/info/attrs.html
+++ b/doc/info/attrs.html
@@ -664,6 +664,13 @@ This field indicates which graph component uses the attribute.
   the dimension used for layout, and the former for rendering.
   If only <TT>dimen</TT> is set, this is used for both layout and rendering
   dimensions.
+  <P>
+  Note that, at present, all aspects of rendering are 2D. This includes
+  the shape and size of nodes, overlap removal, and edge routing. Thus,
+  for <TT>dimen &gt; 2</TT>, the only valid information is the <TT>pos</TT>
+  attribute of the nodes.
+  All other coordinates will be 2D and, at best, will reflect a projection
+  of a higher-dimensional point onto the plane.
 
 <DT><A NAME=d:dir HREF=#a:dir><STRONG>dir</STRONG></A>
 <DD>  Set edge type for drawing arrowheads. This indicates which ends of the

diff --git a/doc/infosrc/attrs b/doc/infosrc/attrs
index 24b04b591d66dd2e900d69f64b81d7fd2eb3e652..dd02428d6f131e181ac57389cd0e73f2dd5be7da 100644 (file)
--- a/doc/infosrc/attrs
+++ b/doc/infosrc/attrs
@@ -217,6 +217,13 @@ If both <TT>dimen</TT> and <TT>dim</TT> are set, the latter specifies
 the dimension used for layout, and the former for rendering.
 If only <TT>dimen</TT> is set, this is used for both layout and rendering
 dimensions.
+<P>
+Note that, at present, all aspects of rendering are 2D. This includes
+the shape and size of nodes, overlap removal, and edge routing. Thus,
+for <TT>dimen &gt; 2</TT>, the only valid information is the <TT>pos</TT>
+attribute of the nodes.
+All other coordinates will be 2D and, at best, will reflect a projection
+of a higher-dimensional point onto the plane.
 :dir:E:dirType:forward(directed)/none(undirected);
 Set edge type for drawing arrowheads. This indicates which ends of the
 edge should be decorated with an arrowhead. The actual style of the