#7051: latex issues
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Reporter: jhpalmieri | Owner: jhpalmieri
Type: defect | Status: new
Priority: minor | Milestone: sage-4.1.3
Component: misc | Keywords:
Reviewer: | Author:
Merged: |
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Here are several LaTeX issues:
- because of how Python works (I think), if you set {{{T =
type(identity_matrix(3))}}}, then T has all of the methods of an identity
matrix. In particular, if you run {{{latex(T)}}}, the code calls
{{{hasattr(T, '_latex_')}}}, and this returns True because
{{{hasattr(identity_matrix(3), '_latex_')}}} is True. But then
{{{T._latex_()}}} produces a {{{TypeError}}}. This is the cause of the
error reported [http://groups.google.com/group/sage-
support/browse_frm/thread/498eb1dae179fc3f here].
Solution: catch {{{TypeError}}}s when calling {{{T._latex_()}}} in this
sort of situation.
- In the notebook, try
{{{
%latex
$\sage{type(35)}$
}}}
In this case, Sage typesets the string {{{<type
'sage.rings.integer.Integer'>}}}, but the < and > signs get converted into
an upside-down exclamation point and question mark.
Solution: typeset strings differently, using {{{\textttt}}} instead of
{{{\text}}}.
- Click the "Typeset" button and try
{{{
type(35)
}}}
In this case, jsMath kicks in and tries to typeset {{{\text{<type
'sage.rings.integer.Integer'>}}}}, but the symbols < and > confuse jsMath
-- it thinks they're part of an html command. As a result, there is *no*
output at all.
Solution: for typesetting strings in jsMath, replace {{{\texttt}}} with
{{{\hbox}}}.
- This comes from a Sage doctest:
{{{
sage: R.<x,y>=QQbar[]
sage: latex(-x^2-y+1)
-x^{2} - y + \text{1}
}}}
The {{{\text{1}}}} should not be there.
Solution: The {{{\text{1}}}} appears because the element 1 in R has no
{{{_latex_}}} method, so it gets converted to a string, when then gets
typeset by enclosing it in {{{\text}}}. So test strings: if they consist
only of digits, just return the string. If it contains anything else,
enclose in {{{\textttt}}}, as mentioned above.
A patch will follow soon.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7051>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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