#8353: Adding height() and width() functions to square grid paths
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Reporter: abmasse | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.3.4
Component: combinatorics | Keywords: paths, height, width
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Description changed by abmasse:
Old description:
> When dealing with 2d word paths, it is very useful to know their height
> and their width.
>
> In particular, one can compute a bounding box for a better displaying.
> The aim of this small ticket is to add those two functionalities.
>
> By the way, while testing it, I noticed a strange behavior:
>
> {{{
> sage: Paths = WordPaths('abcABC')
> sage: p = Paths('acABC')
> sage: points = list(p.points())
> sage: points
> [(0, 0), (1, 0), (1/2, 1/2*sqrt3), (-1/2, 1/2*sqrt3), (-1, 0), (-1/2,
> -1/2*sqrt3)]
> sage: y_coords = map(lambda (_,y):y, points)
> sage: y_coords
> [0, 0, 1/2*sqrt3, 1/2*sqrt3, 0, -1/2*sqrt3]
> sage: max(y_coords)
> -1/2*sqrt3
> }}}
New description:
When dealing with 2d word paths, it is very useful to know their height
and their width.
In particular, one can compute a bounding box for a better displaying. The
aim of this small ticket is to add those two functionalities.
By the way, while testing it, I noticed a strange behavior:
{{{
sage: Paths = WordPaths('abcABC')
sage: p = Paths('acABC')
sage: points = list(p.points())
sage: points
[(0, 0), (1, 0), (1/2, 1/2*sqrt3), (-1/2, 1/2*sqrt3), (-1, 0), (-1/2,
-1/2*sqrt3)]
sage: y_coords = map(lambda (_,y):y, points)
sage: y_coords
[0, 0, 1/2*sqrt3, 1/2*sqrt3, 0, -1/2*sqrt3]
sage: max(y_coords)
-1/2*sqrt3
}}}
Shouldn't `1/2*sqrt3` be the highest element ? This doesn't make sense.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8353#comment:5>
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