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Block-diagonal matrices can be extracted or removed using two small functions implemented here, in addition, non-square matrices are supported.

Block diagonal matrices occur when we combine two dimensions of a data set along one edge of a matrix. For example, trade-flow data in thedecompr andgvc package have each country-industry combination occur on each edge of the matrix.

The stable version of thediagonals package can be install fromCRAN using:

install.packages("diagonals")

The development version, to be usedat your peril, can be installed using:

if (!require('remotes')) install.packages('remotes')remotes::install_github("bquast/diagonals")

Following installation, the package can be loaded using:

library(diagonals)

For general information on using the package, please refer to the help files .

help("diagonals")help(package="diagonals")

For examples of usage, see the function specific help page.

help("fatdiag")

In addition to the help files we provide long form examples in thevignettes .

vignette("fatdiag")# orbrowseVignettes("diagonals")

An overview of the changes is available in the NEWS file.

news(package="diagonals")

There is also a blog post with information on mypersonal website.

https://qua.st/diagonals/

Development takes place on the GitHub page.

https://github.com/bquast/diagonals

Bugs can be filed on the issues page on GitHub.

https://github.com/bquast/diagonals/issues