Mixing
bug with 'unique'? Don't get an error when 'nmax' is 1 less than the number of unique values
4
Have tested this on R 3.5.0.
set.seed(0)
x <- rexp(100)
length(unique(x)) ## 100
## this fails as I expect
unique(x, nmax = 98)
#Error in unique.default(x, nmax = 98) : hash table is full
## but how come does this succeed?
length(unique(x, nmax = 99)) ## 100
r vector unique
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
|
show 2 more comments
4
Have tested this on R 3.5.0.
set.seed(0)
x <- rexp(100)
length(unique(x)) ## 100
## this fails as I expect
unique(x, nmax = 98)
#Error in unique.default(x, nmax = 98) : hash table is full
## but how come does this succeed?
length(unique(x, nmax = 99)) ## 100
r vector unique
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
Same behavior with functionduplicated.
– 李哲源
Nov 21 '18 at 23:16
Why wrap only the second call inlength? I think this would be more clear if you usedlengthin both or neither case of calling unique with nmax of 98 & 99
– arvi1000
Nov 21 '18 at 23:22
This is the best I can offer. r.789695.n4.nabble.com/…nmax - 1still returns the length of your vector, so I think it's correct about ignoring it.
– Anonymous coward
Nov 21 '18 at 23:27
@Anonymouscoward Thanks. Nowfactorhas the same problem.
– 李哲源
Nov 21 '18 at 23:30
I guess anything that callsduplicatedhas the problem.
– Anonymous coward
Nov 21 '18 at 23:31
|
show 2 more comments
4
4
4
1
Have tested this on R 3.5.0.
set.seed(0)
x <- rexp(100)
length(unique(x)) ## 100
## this fails as I expect
unique(x, nmax = 98)
#Error in unique.default(x, nmax = 98) : hash table is full
## but how come does this succeed?
length(unique(x, nmax = 99)) ## 100
r vector unique
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
Have tested this on R 3.5.0.
set.seed(0)
x <- rexp(100)
length(unique(x)) ## 100
## this fails as I expect
unique(x, nmax = 98)
#Error in unique.default(x, nmax = 98) : hash table is full
## but how come does this succeed?
length(unique(x, nmax = 99)) ## 100
r vector unique
r vector unique
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
asked Nov 21 '18 at 23:10
李哲源李哲源
48.3k1496147
48.3k1496147
Same behavior with functionduplicated.
– 李哲源
Nov 21 '18 at 23:16
Why wrap only the second call inlength? I think this would be more clear if you usedlengthin both or neither case of calling unique with nmax of 98 & 99
– arvi1000
Nov 21 '18 at 23:22
This is the best I can offer. r.789695.n4.nabble.com/…nmax - 1still returns the length of your vector, so I think it's correct about ignoring it.
– Anonymous coward
Nov 21 '18 at 23:27
@Anonymouscoward Thanks. Nowfactorhas the same problem.
– 李哲源
Nov 21 '18 at 23:30
I guess anything that callsduplicatedhas the problem.
– Anonymous coward
Nov 21 '18 at 23:31
|
show 2 more comments
Same behavior with functionduplicated.
– 李哲源
Nov 21 '18 at 23:16
Why wrap only the second call inlength? I think this would be more clear if you usedlengthin both or neither case of calling unique with nmax of 98 & 99
– arvi1000
Nov 21 '18 at 23:22
This is the best I can offer. r.789695.n4.nabble.com/…nmax - 1still returns the length of your vector, so I think it's correct about ignoring it.
– Anonymous coward
Nov 21 '18 at 23:27
@Anonymouscoward Thanks. Nowfactorhas the same problem.
– 李哲源
Nov 21 '18 at 23:30
I guess anything that callsduplicatedhas the problem.
– Anonymous coward
Nov 21 '18 at 23:31
Same behavior with function
duplicated.– 李哲源
Nov 21 '18 at 23:16
Same behavior with function
duplicated.– 李哲源
Nov 21 '18 at 23:16
Why wrap only the second call in
length? I think this would be more clear if you used length in both or neither case of calling unique with nmax of 98 & 99– arvi1000
Nov 21 '18 at 23:22
Why wrap only the second call in
length? I think this would be more clear if you used length in both or neither case of calling unique with nmax of 98 & 99– arvi1000
Nov 21 '18 at 23:22
This is the best I can offer. r.789695.n4.nabble.com/…
nmax - 1 still returns the length of your vector, so I think it's correct about ignoring it.– Anonymous coward
Nov 21 '18 at 23:27
This is the best I can offer. r.789695.n4.nabble.com/…
nmax - 1 still returns the length of your vector, so I think it's correct about ignoring it.– Anonymous coward
Nov 21 '18 at 23:27
@Anonymouscoward Thanks. Now
factor has the same problem.– 李哲源
Nov 21 '18 at 23:30
@Anonymouscoward Thanks. Now
factor has the same problem.– 李哲源
Nov 21 '18 at 23:30
I guess anything that calls
duplicated has the problem.– Anonymous coward
Nov 21 '18 at 23:31
I guess anything that calls
duplicated has the problem.– Anonymous coward
Nov 21 '18 at 23:31
|
show 2 more comments
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Same behavior with function
duplicated.– 李哲源
Nov 21 '18 at 23:16
Why wrap only the second call in
length? I think this would be more clear if you usedlengthin both or neither case of calling unique with nmax of 98 & 99– arvi1000
Nov 21 '18 at 23:22
This is the best I can offer. r.789695.n4.nabble.com/…
nmax - 1still returns the length of your vector, so I think it's correct about ignoring it.– Anonymous coward
Nov 21 '18 at 23:27
@Anonymouscoward Thanks. Now
factorhas the same problem.– 李哲源
Nov 21 '18 at 23:30
I guess anything that calls
duplicatedhas the problem.– Anonymous coward
Nov 21 '18 at 23:31