Transcranial Doppler (TCD), first described in 1982 [1], is a noninvasive ultrasound (US) study that involves the use of a low-frequency (â¤2 MHz) transducer probe to insonate the basal cerebral arteries through relatively thin bone windows.
Details. as.character and is.character are generic: you can write methods to handle specific classes of objects, see InternalMethods. Further, for as.character the default method calls as.vector, so dispatch is first on methods for as.character and then for methods for as.vector.
In this Example, We will Introduced you about the getNumericValue() method of the character class. This method returns the numeric value of the character. If any character don't have any numeric value than it returns -1 and returns -2 if the value is not represented as a non negative. This method have parameter as the character to be find the numeric value as-getNumericValue('ch'). Example: GetNumericValue.java. Output: