downset: downset

In parsec: PARtial orders in Socio-EConomics

Description

The function returns a boolean vector indicating if each element of the poset domains (or is equal to) at least an element of the subset Q.

Usage

downset(z, ...)
## S3 method for class 'cover'
downset(z, ...)
## S3 method for class 'incidence'
downset(z, Q = NULL, ...)

Arguments

z	a cover or an incidence matrix, respectivelly of S3 classes cover or incidence
Q	vector to select a subset of the profiles in the poset defined through z
...	any of the above.

Examples

z <- getzeta(var2prof(varlen = c(2, 2, 2)))

plot(z, col = 1 + c(1, 1, 0, 0, 1, 0, 0, 0) + c(0, 0, 0, 2, 0, 0, 2, 2), lwd = 2)

Q <- c(4, 7, 8)
rownames(z)[Q]
downset(z, Q)

Q <- c("211", "112", "111")
downset(z, Q)

Example output

[1] "221" "122" "222"
 111  211  121  221  112  212  122  222 
TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE 
  111   211   121   221   112   212   122   222 
 TRUE  TRUE FALSE FALSE  TRUE FALSE FALSE FALSE 

parsec documentation built on May 2, 2019, 6:08 p.m.