# CTAN update: nicematrix

Date: June 24, 2019 8:10:23 PM CEST
François Pantigny submitted an update to the nicematrix package. Version number: 2.2 2019-06-23 License type: lppl1.3 Summary description: Several features to improve the typesetting of mathematical matrices with TikZ Announcement text:
Possibility to draw horizontal dotted lines to separate rows with the command \hdottedline (similar to the classical command \hline and the command \hdashline of arydshln). Possibility to draw vertical dotted lines to separate columns with the specifier ":" in the preamble (similar to the classical specifier "|" and the specifier ":" of arydshln). It's possible to replace ":" by another letter with the option "letter-for-dotted-lines". This version is not strictly compatible with the previous ones since this new version will, be default, replace some vertical lines drawn by arydshln with lines drawn by nicematrix. However, an instruction \NiceMatrixOptions{letter-for-dotted-lines=V} will restore the previous behaviour.
Thanks for the upload. For the CTAN Team Erik Braun
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## 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.

nicematrix requires and loads amsmath, array, expl3, l3keys2e, xparse, tikz, as well as the TikZ library fit.

 Package nicematrix Version 3.1 2019-09-04 Copyright 2017–2019 F. Pantigny Maintainer François Pantigny

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