R: Remove the Lower Triangles of Adjacency Matrices in a Graph...

lower.tri.remove {sna} | R Documentation

## Remove the Lower Triangles of Adjacency Matrices in a Graph Stack

### Description

Returns the input graph set, with the lower triangle entries removed/replaced as indicated.

### Usage

    lower.tri.remove(dat, remove.val=NA)

### Arguments

`dat` | one or more input graphs.
`remove.val` | the value with which to replace the existing lower triangles.

### Details

`lower.tri.remove` is simply a convenient way to apply `g[lower.tri(g)]<-remove.val` to an entire stack of adjacency matrices at once.

### Value

The updated graph set.

### Author(s)

Carter T. Butts buttsc@uci.edu

### See Also

`lower.tri`, `upper.tri.remove`, `diag.remove`

### Examples

    #Generate a random graph stack
    g<-rgraph(3,5)
    #Remove the lower triangles
    g<-lower.tri.remove(g)

[Package sna version 2.4 Index]