Questions about R Basics

[Mohamed_Fergany]

Hi,

I'm still a beginner in the DA field and I have two quick fundamental questions:

1. why vectors were made so that they can have only one type of data unlike lists and tuples in Python?
2. why indexing in R starts with 1 unlike python?

Thanks,

[pieterjanvc]

Hello,

In regards to your questions:

1. Vectors in R are indeed all of the same class, but it is perfectly possible to have lists containing different classes in R as well.

vec = c(1, "A", T)
sapply(vec, class)
#>           1           A        TRUE 
#> "character" "character" "character"


lst =list(1, "A", T)
sapply(lst, class)
#> [1] "numeric"   "character" "logical"

^{Created on 2022-04-03 by the reprex package (v2.0.1)}

2. R is based on Fortran, a language that also has indexing 1 the same as other related languages like Matlab. Since these languages are more used by mathematicians / statisticians, indexing starting at 1 is more logical as this is the way it is defined in mathematics

Hope this helps,
PJ

[Mohamed_Fergany]

indeed it does thanks for your help @pieterjanvc