well function arguments are in square brackets. z is result (new
vector). I show Matematica syntax, but cannot explain what I expect. Sorry
The example is wrong because it can be replaced by R cut function. The
arguments are: condition,action.... and can be replaced by ste of ifelse
formulas:
if (x<10) x<-0.7
else if (x<30 && x=>10) x<-x^2/(x-1)
etc...
but that solution is slow for vectors with millions of numbers
thanks
Jarek
Erik Iverson pisze:
Hello,
I'm looking for equivalent of Matematica function "Which" which works as
follows:
z = Which[x<10,0.3, 10<=x<20,0.5, 20<=x<100,1]
where x is a vector
Unless someone happens to be a Mathematica user (very possible), I don't know how we would answer the question. You give an example of the function call, but not what the function arguments or return value are.
There is an R function called "which", but what the Mathematica "Which" is doing is
entirely mysterious from your example. What is in "z" for instance??
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