How can I store in a vector the result of a function in R

Question

How can I store in a vector the result of a function in R. For instance. The function measures(out, 0.999) give me the following result:

       p quantile    sfall
 [1,] 0.99 2.826164 3.758789. 

I want to store the value of 2.8261 , How can I do it?

Answer 1

@akrun is right, but I'd rather use a call to the name of the column. Moreover, if you want the result to be stored only up to the 4th decimal, you can wrap the result into a round function, like the following code does:

stored_quantile <- round(measures(out, 0.999)$quantile,4)

EDIT : the reason for preferring my solution is that if the function measures would produce a different output order between the columns you would always be sure to get the value you are interested in (ie: quantile )