How to index in r
19 Feb 2019 Index is like an address, that's how any data point across the dataframe or series can be accessed. Rows and columns both have indexes, rows 14 Feb 2019 Note that in this case index i is valid only if all its entries are equal to one. r=x(i) with x a row vector builds the row vector r such as r(l)=x(int(i(l))) an ordered vector of the same length as the "index" attribute of x. Details index is a generic function for extracting the index of objects, currently it has a default method and a method for zoo objects which is the same as the time method for zoo objects.