allEqual | R Documentation |
This function tests whether all elements of the specified vector are equal
to each other, i.e., whether the vector contains only a single unique value.
For lists, equality is determined using equivalent
.
allEqual(x, ignoreMissing = FALSE, ...)
x |
A vector of any mode, including a list. |
ignoreMissing |
If |
... |
Additional arguments to |
TRUE
if all elements test equivalent; FALSE
otherwise.
Jon Clayden
Please cite the following reference when using TractoR in your work:
J.D. Clayden, S. Muñoz Maniega, A.J. Storkey, M.D. King, M.E. Bastin & C.A. Clark (2011). TractoR: Magnetic resonance imaging and tractography with R. Journal of Statistical Software 44(8):1-18. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.18637/jss.v044.i08")}.
equivalent
for elementwise equivalence of two
vectors.
allEqual(c(1,1,1)) # TRUE
allEqual(c(1,1,NA)) # FALSE
allEqual(c(1,1,NA), ignoreMissing=TRUE) # TRUE
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