Is there some functionality to spit out LaTeX code for typesetting matrices?

General Usage
1

For instance to typeset 3 x 3 random matrix of floats, I would like to call a function (or a macro) to produce the typesetting code. Is there such a thing?

2

You might want to go through SymPy:

using SymPy
v = Sym.(rand(3,3))
args = ()
SymPy.sympy_meth(:latex, v, args...)

with args detailed here: Printing - SymPy 1.11 documentation

2 Likes
3

Also check out

6 Likes
4 
julia> using Latexify

julia> A = rand(3,3)
3Ă—3 Array{Float64,2}:
 0.212977  0.297547  0.422277
 0.302519  0.522596  0.180855
 0.288964  0.01098   0.683853

julia> latexify(A)
L"\begin{equation}
\left[
\begin{array}{ccc}
0.212976937434459 & 0.29754727246675006 & 0.42227698240275924 \\
0.30251946700649746 & 0.5225962585963944 & 0.18085503939791114 \\
0.28896355463698153 & 0.010980031174606442 & 0.6838534272801575 \\
\end{array}
\right]
\end{equation}
"
6 Likes
5

Perfect, works like a charm. Thanks!

6 
julia> using Reduce

julia> rounded(true)
true

julia> A = rand(3,3)
3Ă—3 Array{Float64,2}:
 0.939254  0.688392  0.499559
 0.18629   0.833578  0.503867
 0.172579  0.991595  0.93439 

julia> Algebra.latex(RExpr(A))
"\\begin{displaymath}\nmat\\left(0.939253842625,0.186290380376,0.172578870645\\right)\n\\end{displaymath}\n"
2 Likes
7

Have been learning LaTeX of late thanks to you all here…
Using output by @isaacsas, here are two templates that produce an isolated table output (vs. inserting the snippet into a larger TeX doc).
These use the {standalone} document class which requires the [preview] statement to be used as well. (I see now a monospace font would be better)
(EDIT: here is link to details on the standalone class and preview requirement: How to make a standalone document with one equation? - TeX - LaTeX Stack Exchange):

\documentclass[preview]{standalone}
\begin{document}
\begin{equation}
\left[
\begin{array}{ccc}
0.18458975587092463 & 0.9298785408616752 & 0.34542681064934255 \\
0.9326960389944068 & 0.40297929303916424 & 0.2930744179979483 \\
0.22849589421017158 & 0.1690502411807564 & 0.5325580036745081 \\
\end{array}
\right]
\end{equation}{~} % Remove the '{~}' to remove padding below figure
\end{document}

produces this, which has a figure # that may not be ideal. Note the {~} added for padding at bottom of array output for bottom padding:

juliatex_compact_fignum_3x3
juliatex_compact_fignum_3x3888Ă—163 11.3 KB

To remove the figure number, used the $$ ... $$ syntax (\(...\) can be used in lieu of $$…$$) and removed begin/end {equation} :

\documentclass[preview]{standalone}
\begin{document}
$$
\left[
\begin{array}{ccc}
0.18458975587092463 & 0.9298785408616752 & 0.34542681064934255 \\
0.9326960389944068 & 0.40297929303916424 & 0.2930744179979483 \\
0.22849589421017158 & 0.1690502411807564 & 0.5325580036745081 \\
\end{array}
\right]
$${~} % Remove the '{~}' to remove padding below figure
\end{document}

produces:

juliatex_article_nonum_3x3_v2
juliatex_article_nonum_3x3_v2882Ă—158 10.9 KB

8

I wrote array_to_latex to add more capable formatting. It’s Python, so you have to call it that way. I haven’t done so. Something like that should exist for Julia, but someone has to step up. I’m not familiar enough with Julia packaging and coding.

9

What functionality are you missing from Latexify.jl?

10

Not much, if any. Latexify is a very impressive package. I looked a bit and I don’t see anything now. It looks like this author “got the point” and really did a great job. I hadn’t realized the extent of it all. It puts my package to shame.

1 Like
11

I am just adding PrettyTables as another option for the completeness.

1 Like