I am trying to insert a matrix like the following:
|a |b| |c |d|
with the middle vertical line being a dashed or dotted line. I know that I could accomplish my goal with the package hvdashlin. However, it demands using ERTs. Is there some way of doing that adding something to the preamble and inserting the matrix as usual (not with ERTs)?
If the dashed line needn't to be continuous, you could use a 3x2 matrix and fill the second column with \vdots. Otherwise you have to use ERT.
Btw. it seems that the math panel in LyX-qt 1.3.x doesn't offer the \cdots, \vdots, \ddots and \ldots. But the first three are often used in matrices.
regards Uwe
