Counts the number of all possible signed triangles (+++),(++-), (+--) and (---)

## Arguments

- g
igraph object.

- attr
edge attribute name that encodes positive ("P"), negative ("N") and ambivalent ("A") ties.

## Examples

```
library(igraph)
g <- graph.full(4)
E(g)$type <- c("P", "N", "A", "A", "P", "N")
count_complex_triangles(g, attr = "type")
#> PPP PPN PNN NNN PPA PNA NNA PAA NAA AAA
#> 0 0 0 0 1 2 1 0 0 0
```