nicematrix – Several features to improve the typesetting of mathematical matrices with TikZ

This pack­age pro­vides new en­vi­ron­ments sim­i­lar to the en­vi­ron­ments ma­trix, pma­trix, bma­trix, etc. of ams­math and math­tools.

In these new en­vi­ron­ments, a TikZ  node is cre­ated for each cell of the ma­trix.

The user can use these nodes di­rectly but nice­ma­trix also pro­vides com­mands which use these nodes to draw con­tin­u­ous dot­ted lines from two cells of the ma­trix (the re­sult is more aes­thetic than the clas­si­cal re­sult ob­tained us­ing \cdots, \vdots, \ddots, etc.).

This pack­age also pro­vides a con­trol over the width of the columns and the pos­si­bil­ity to add an ex­te­rior line and an ex­te­rior col­umn.

Down­load the con­tents of this pack­age in one zip archive (383.5k).