#19957: Asymptotic ring: list plot comparing values
-------------------------------------+-------------------------------------
Reporter: cheuberg | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.1
Component: asymptotic | Resolution:
expansions | Merged in:
Keywords: | Reviewers:
Authors: Benjamin Hackl, | Work issues:
Clemens Heuberger | Commit:
Report Upstream: N/A | 5b20379b8dafbf0467eb040d55bc0d857f2a1ea3
Branch: u/behackl/asy | Stopgaps:
/compare-with-values |
Dependencies: #19931 |
-------------------------------------+-------------------------------------
Changes (by {'newvalue': u'Benjamin Hackl, Clemens Heuberger', 'oldvalue':
u'Clemens Heuberger'}):
* status: needs_info => needs_review
* commit: fd6b4ec75f7917d326c3c1e4ab5b1f2b715a6c95 =>
5b20379b8dafbf0467eb040d55bc0d857f2a1ea3
* branch: u/cheuberg/asy/commpare-with-values => u/behackl/asy/compare-
with-values
* author: Clemens Heuberger => Benjamin Hackl, Clemens Heuberger
Comment:
Replying to [comment:7 cheuberg]:
> > - should there be a keyword `scaled=True` with which the division by
the error term can be controlled?
>
> what would `scaled=True` and `scaled=False` do?
Plot the relative and the absolute error, respectively. Sometimes I like
to look at both.
>
> > - what do you think of a `PLOTS::`-section for the documentation?
>
> Within a finite amount of time, I could not get it to work. In any case,
this is distinct from doctesting; thus one would have to repeat all
commands to generate the plot. Sage preparsing apparently does not work
here. Then I got a strange error message.
>
I couldn't get it to work either: some strange error regarding coercion of
a function to `SR` occurrs...
> For doctests, I rather think that we might want to output the list
itself instead of the list plot, perhaps already piped through `RIF` or
something like that. That would make useful doctests (and could be used
throughout the modules during review phases). Thus there could be a flag
`return_list=True` or something like that (or a separate method computing
the list which could be used in this method here ...).
I've implemented parts of this: there are now two methods; one for
computing the list of differences and one for actually plotting. Also, for
the sake of convenience, I've added the option to input a symbolic
expression containing at most one variable.
Regarding the output: while I'd really like to have RIFs in the output of
the difference method, unfortunately this causes problems for `list_plot`,
e.g. try
{{{
sage: list_plot([(k, RIF(sqrt(k))) for k in srange(10)])
}}}
If the difference should lie in a RIF, the list would have to be processed
again before plotting.
Opinions?
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=83125aa065b7dc7c5f0e2bd5d18f684b3e81c6c9
83125aa]||{{{let compare_with_values return a list of tuples}}}||
||[http://git.sagemath.org/sage.git/commit/?id=85bf9a04e78124afb27bac5733dc50354f816eed
85bf9a0]||{{{add rescaled-parameter}}}||
||[http://git.sagemath.org/sage.git/commit/?id=d1105800bb03becdac4d6dbbe97a2640000d18fe
d110580]||{{{allow symbolic arguments for values}}}||
||[http://git.sagemath.org/sage.git/commit/?id=b09ae927e5fc9da867b8239f1a96ff09e2a09fad
b09ae92]||{{{improve doctests with shorter workaround}}}||
||[http://git.sagemath.org/sage.git/commit/?id=5b20379b8dafbf0467eb040d55bc0d857f2a1ea3
5b20379]||{{{add plot_comparison method}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/19957#comment:8>
Sage <http://www.sagemath.org>
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