#9623: interacts for high school level education
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Reporter: schilly
| Owner: itolkov, jason
Type: enhancement
| Status: closed
Priority: major
| Milestone: sage-4.7.1
Component: interact
| Resolution: fixed
Keywords:
| Work_issues:
Upstream: N/A
| Reviewer: Jason Grout, Karl-Dieter Crisman, John Thurber, Marshall
Hampton
Author: Lauri Ruotsalainen, Harald Schilly, Robert Marik, Marshall
Hampton | Merged: sage-4.7.1.alpha0
Dependencies:
|
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Comment(by jhpalmieri):
A question for anyone who contributed to this ticket: the file
`library_cython.pyx` has this code in it:
{{{
cpdef cellular(rule, int N):
'''
Cythonized helper function for the callular_automata fractal.
Yields a matrix showing the evolution of a Wolfram's cellular
automaton.
Based on work by Pablo Angulo.
http://wiki.sagemath.org/interact/misc#CellularAutomata
INPUT:
- `rule` -- determines how a cell's value is updated, depending on
its neighbors
- `N` -- number of iterations
TESTS::
sage: from sage.interacts.library_cython import cellular
sage: rule = [1, 0, 1, 0, 0, 1, 1, 0]
sage: N = 3
sage: print cellular(rule, 3)
'''
}}}
Note that the output from the last line of the doctest is missing. Since
the docstring is enclosed in triple single quotes instead of triple double
quotes, doctesting skipped this altogether. At #8708, there is a patch
which will now run doctests within triple single quotes, in which case
this file has one failure.
So the question is: what is the output supposed to be? When I run this
command, I get
{{{
sage: print cellular(rule, 3)
[[0 0 0 1 0 0 0]
[0 0 0 1 0 0 0]
[0 1 0 1 0 1 0]]
}}}
Is this right? I don't know what the mathematics here is trying to do, so
I really have no idea...
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9623#comment:47>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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