how to keep most distant individuals in matrix?

[genetist]

Hi to all
Good Afternoon
I have genetic distance matrix between individuals in data frame format as like in attached pic and it is ranged from 0.0075 to 0.394506.

Now i am using quantile function to keep distant individuals but i am getting below error
Error in probs < -eps :
comparison (3) is possible only for atomic and list types
In addition: Warning message:
In is.na(probs) : is.na() applied to non-(list or vector) of type 'closure'
Here is my code

m.D = as.matrix(dist(dat[-1,],
                       method = "euclidean",
                       diag=F,
                       upper = F)); 
# Only keep the most distant combinations
test = as.data.frame(which(dat > quantile(m.D,dist,na.rm = T), arr.ind = TRUE))

can any help me to solve this error? any help in this regard is highly aprreciated
Thanks in Advance
Regards

[nirgrahamuk]

@genetist

quantile(m.D,dist,na.rm = T)

this is the cause of the error.
What is the role of the dist function here ? I think it should be omitted. or rather replaced with a choice of which quantile to choose.

quantile(m.D,.75,na.rm = T)