Exporting column vector as matrix in latex via “Copy as” doesn't always work. Example with vector

Question

I want the simplest way of exporting matrices, and vector from mathematica to Latex.

Usually, I display my matrices in MatrixForm and copy as Latex to paste in my latex document. However it seems it doesn't always work, take the following code:

vv = {1, 2};
vv // MatrixForm

If from the display you do "copy as -> Latex", it returns you:

\{1,2\}

Instead of (for example):

\begin{pmatrix} 1 \\ 2 \end{pmatrix}

Which would match the mathematica display. If I input a matrix however (thus having more than 1 column), it works as it should.

How to make it really returns me something that will look like a column vector in latex ?

Answer 1

What about

export[v_?VectorQ] := export@Partition[vv, 1];
export[A_?MatrixQ] := CopyToClipboard@TeXForm@A;

and then

vv // export

?

A way to enforce pmatrix could be

export[v_?VectorQ] := export@Partition[vv, 1];
export[A_?MatrixQ] := CopyToClipboard@StringJoin[
    "\\begin{pmatrix}\n",
    ExportString[
     Join[
      Map[TeXForm, A, {2}],
      Append[ConstantArray["\\\\", {Length[A] - 1, 1}], {""}],
      2],
     "Table",
     "FieldSeparators" -> " & "
     ],
    "\n\\end{pmatrix}"
    ];

Btw., MatrixForm is super superfluous here.