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R Tip: use isTRUE(). A lot of R functions are type unstable, which means they return different types or classes depending on details of their values. For example consider all.equal(), it returns the logical value TRUE when the items being compared are equal: all.equal(1:3, c(1, 2, 3)) # [1] TRUE However, when the items being … Continue reading R Tip: use isTRUE()
isTRUE() function in R Language is used to check whether a value or a logical expression is true or not. Syntax: isTRUE (x) Parameters: x: logical or number-like vector Example 1:
The ISTRUE function returns TRUE when the truth value of boolean-expression is TRUE, and FALSE when the truth value is FALSE or NULL.
From ?identical: The function 'all.equal' is also sometimes used to test equality this way, but was intended for something different: it allows for small differences in numeric results. And one reason you would wrap all.equal in isTRUE is because all.equal will report differences rather than simply return FALSE.
R isTRUE function examples, R isTRUE usageisTRUE () function tests whether value or express is TRUE or not.
Expression. Is True Method In this article Definition Overloads IsTrue (Expression) IsTrue (Expression, MethodInfo) Definition
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isTrue: isTrue Description Returns TRUE for TRUE elements, FALSE for FALSE elements, and whatever is specified in na for NA items. Usage isTrue(x, na = FALSE) Arguments
xor indicates elementwise exclusive OR. isTRUE (x) is an abbreviation of identical (TRUE, x), and so is true if and only if x is a length-one logical vector whose only element is TRUE and which has no attributes (not even names). Numeric and complex vectors will be coerced to logical values, with zero being false and all non-zero values being true.
R Tip: use isTRUE(). A lot of R functions are type unstable, which means they return different types or classes depending on details of their values. For example consider all.equal(), it returns th…