Running examples in 'parsec-Ex.R' failed
The error most likely occurred in:

> ### Name: parsec2igraph
> ### Title: Converting a partial order to an object of the package 'igraph'.
> ### Aliases: parsec2igraph parsec2igraph.cover parsec2igraph.incidence
> 
> ### ** Examples
> 
> example(merge.wprof)

mrg.wp> n <- 5

mrg.wp> v1 <- as.ordered(c("a", "b", "c", "d"))

mrg.wp> v2 <- 1:3

mrg.wp> set.seed(0)

mrg.wp> pop <- data.frame(
mrg.wp+ 	v1 = sample(v1, n, replace = TRUE),
mrg.wp+ 	v2 = sample(v2, n, replace = TRUE)
mrg.wp+ )

mrg.wp> survey_weights <- round(runif(5)*10)

mrg.wp> prof1 <- pop2prof(pop, weights = survey_weights)

mrg.wp> prof2 <- var2prof(varmod = list(v1 = as.ordered(c("a", "b", "c", "d")), v2 = 1:3))

mrg.wp> # prof2 is the support of prof1
mrg.wp> merge(prof1, prof2, support = TRUE)
$profiles
   v1 v2
a1  a  1
b1  b  1
c1  c  1
d1  d  1
a2  a  2
b2  b  2
c2  c  2
d2  d  2
a3  a  3
b3  b  3
c3  c  3
d3  d  3

$freq
a1 b1 c1 d1 a2 b2 c2 d2 a3 b3 c3 d3 
 0  0  0  1  0  0  7  4  0  4  0  0 

attr(,"class")
[1] "wprof"

mrg.wp> # union between the two sets of profiles and their frequencies are added
mrg.wp> merge(prof1, prof2)
$profiles
   v1 v2
a1  a  1
a2  a  2
a3  a  3
b1  b  1
b2  b  2
b3  b  3
c1  c  1
c2  c  2
c3  c  3
d1  d  1
d2  d  2
d3  d  3

$freq
a1 a2 a3 b1 b2 b3 c1 c2 c3 d1 d2 d3 
 1  1  1  1  1  5  1  8  1  2  5  1 

attr(,"class")
[1] "wprof"

mrg.wp> # intersection of the sets of profiles with the assumption
mrg.wp> # that the minimum number of observations is shared
mrg.wp> # between the two distributions
mrg.wp> merge(prof1, prof2, all = FALSE, FUN = min)
$profiles
   v1 v2
b3  b  3
c2  c  2
d1  d  1
d2  d  2

$freq
b3 c2 d1 d2 
 1  1  1  1 

attr(,"class")
[1] "wprof"

mrg.wp> prof2$freq <- prof2$freq*10

mrg.wp> # to remove from prof2 the observations in prof1
mrg.wp> distribution <- merge(prof2, prof1, FUN = "-"); distribution
$profiles
   v1 v2
a1  a  1
a2  a  2
a3  a  3
b1  b  1
b2  b  2
b3  b  3
c1  c  1
c2  c  2
c3  c  3
d1  d  1
d2  d  2
d3  d  3

$freq
a1 a2 a3 b1 b2 b3 c1 c2 c3 d1 d2 d3 
10 10 10 10 10  6 10  3 10  9  6 10 

attr(,"class")
[1] "wprof"
> poset <- getzeta(distribution)
> incidence2cover(poset)
      a1    a2    a3    b1    b2    b3    c1    c2    c3    d1    d2    d3
a1 FALSE  TRUE FALSE  TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
a2 FALSE FALSE  TRUE FALSE  TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
a3 FALSE FALSE FALSE FALSE FALSE  TRUE FALSE FALSE FALSE FALSE FALSE FALSE
b1 FALSE FALSE FALSE FALSE  TRUE FALSE  TRUE FALSE FALSE FALSE FALSE FALSE
b2 FALSE FALSE FALSE FALSE FALSE  TRUE FALSE  TRUE FALSE FALSE FALSE FALSE
b3 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE FALSE FALSE FALSE
c1 FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE FALSE  TRUE FALSE FALSE
c2 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE FALSE  TRUE FALSE
c3 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE
d1 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE FALSE
d2 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE
d3 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
attr(,"class")
[1] "cover"
> 
> G <- parsec2igraph(poset, noise = TRUE)
> get.adjacency(G)
12 x 12 sparse Matrix of class "dgCMatrix"
Error in isFALSE(suppRows) : could not find function "isFALSE"
Calls: <Anonymous> -> <Anonymous> -> printSpMatrix2
Execution halted