# Blocked Infinity Sparse Matrix

Source:`R/InfinitySparseMatrix.R`

`BlockedInfinitySparseMatrix-class.Rd`

Blocked Infinity Sparse Matrices are similar to Infinity Sparse Matrices, but they also keep track of the groups of units via an additional slot, `groups`

## Slots

`groups`

factor vector containing groups, with unit names as labels, when possible

`colnames`

vector containing names for all control units. This will either be a character vector or NULL if units have no names

`rownames`

vector containing names for all treated units. This will either be a character vector or NULL if units have no names

`cols`

vector of integers corresponding to control units

`rows`

vector of integers corresponding to treated units

`dimension`

integer vector containing the number of treated and control units, in that order

`call`

function call used to create the

`InfinitySparseMatrix`