On 22. Mar 2020, at 15:56, Frank <address@hidden> wrote:

Maybe my understanding is incorrect. You just look at Nicolas' screenshot, mine is the same: the icons under "bordure" are all gray, while these options like "0.5in" and "Le tout ..." are black. I understand gray ones as disabled options.

Best wishes,
Frank

于 March 22, 2020 2:41:27 PM UTC, Massimiliano Gubinelli <address@hidden> 写到:

I do not think is really grayed out. Maybe the icon is not prominent enough. Can you pinpoint the problem? Sometime the color is different?

best

m

On 22. Mar 2020, at 10:22, Frank <address@hidden> wrote:

Thanks.

There seems to be a bug. I already found this option, grayed out (it is also gray in your screenshot), but it is clickable!

Best wishes,

Frank

On 22/03/2020, Nicolas Chouvalidzé wrote:

Hi,

I don't know if this is exactly what you're looking for, but when you insert a matrix, it is considered as a table, so you can create a separation using a table border.

When you have created the matrix of the correct size (with twice as many columns than lines, if I got it well), you have to select the vertical column of cells where you want your separation to be :

<image.png>

And then just click on the "border options" button next to the "cell" one in the top bar of Texmacs. Here, you can add a vertical border like this :

<image.png>

And you should have pretty clean separator between your two matrix.

Nicolas.

Le dim. 22 mars 2020 à 09:49, Frank <address@hidden> a écrit :

Dear all,

I wonder whether I can add delimiters in matrices. For example, to
compute the inverse of a matrix A, it is customary to add a vertical
line to the matrix (A,I_n) as a delimiter (A|I_n). I wonder how to add
this vertical line "|" properly.

Best wishes,

Frank

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