Re: [sage-support] Re: Problem building sage-4.7.2
Hello, I downloaded the readline-6.2.p3 and now the build goes through. Thank you very much. Ulrich -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Problem building sage-4.7.2
I have problem building sage from source. I am using a Dell Laptop 6520 (64 bit) and Ubuntu 11.10. The error message in the install.log is checking for history_truncate_file...no configure: error: --with-readline=yes (default) and headers/libs are not available Error configuring R. How can I resolve the problem? Ulrich Tipp -- Prof. Dr. Ulrich Tipp FB 03 Elektrotechnik und Informatik Hochschule Niederrhein Reinarzstr. 49 47805 Krefeld -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] edge labels in trees
Thank you very much. It works now.
Am Mittwoch, den 06.04.2011, 23:18 +0800 schrieb D. S. McNeil:
I want to show a tree with edge labels. I tried out
G1 = Graph({1:{5:0},2:{5:1},3:{6:1},4:{7:0},5:{6:0},6:{7:1}})
show(G1,edge_labels=true)
show(G1,layout=tree,edge_labels=true)
In the first graphic the labels are positioned on the edges but in the
second one they are not. Why is this? How can I get it right?
I think this is related to
http://trac.sagemath.org/sage_trac/ticket/10124, or at least my
patched version seems to work. The basic problem is that
graph_plot.py has problems with integer positions because integer
division is truncating in Python 2 and it's easy to forget to handle
the integer case when your inputs are typically floats. (This problem
goes away in Python 3.)
You could either apply the posted patch, or -- as a hack which doesn't
require any rebuilding -- you could type the following before you plot
G1:
# trac #10124 partial monkeypatch
def set_pos(self):
self._pos = self._graph.layout(**self._options)
self._pos = dict((k,(float(v[0]), float(v[1]))) for k,v in
self._pos.iteritems())
import sage.graphs.graph_plot
sage.graphs.graph_plot.GraphPlot.set_pos = set_pos
which should work around the problem in the meantime, unless this
coffee hasn't kicked in yet..
Doug
--
Department of Earth Sciences
University of Hong Kong
--
Prof. Dr. Ulrich Tipp
FB 03 Elektrotechnik und Informatik
Hochschule Niederrhein
Reinarzstr. 49
47805 Krefeld
--
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[sage-support] edge labels in trees
I want to show a tree with edge labels. I tried out
G1 = Graph({1:{5:0},2:{5:1},3:{6:1},4:{7:0},5:{6:0},6:{7:1}})
show(G1,edge_labels=true)
show(G1,layout=tree,edge_labels=true)
In the first graphic the labels are positioned on the edges but in the
second one they are not. Why is this? How can I get it right?
--
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To unsubscribe from this group, send email to
sage-support+unsubscr...@googlegroups.com
For more options, visit this group at
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URL: http://www.sagemath.org
