I have attached the document for R below which I have seen to get the idea about R & also have added a few comments of mine in the same document which may be helpful.
Also I will be using this space to share a thing or two about what I see in R during my time with R which may again help you.
To work on R language will suggest you to download the GUI for this. It will provide you the console & you can clean that console using Ctrl+L
Indexes are not 0 based here in R, index starts from 1.
I have attached the pdf which I tried to study about R language. I am not much impressed by R as given in this PDF.
One can create impressive charts & diagrams using other APIs but what is special in R otherwise I don't know, popularity of R also seems to me some political or business agenda. People propagates such technologies/languages just to make extra money otherwise I don't know why one needs to learn so many languages/technologies. Rest you are also logical :)
=======================================================================
Add a list of numbers to a variable & then sort its contents.
> a <- List(1,5,3,4,2)
> factor(a, sort(a))
[1] 1 5 3 4 2
Levels: 1 2 3 4 5
Basically, use above factor() to get other features else can use sort() directly shown below.
> a <- c("Nitin","Ali","Chandan","Babita")
> sort(a)
[1] "Ali" "Babita" "Chandan" "Nitin"
List of different objects can be created like -
> s <- list(c(1,2), fac, M, a)
> s
[[1]]
[1] 1 2
[[2]]
[1] 1 10
Levels: 1 10
[[3]]
[1] 10 35
[[4]]
[1] <NA> <NA> <NA>
Levels: 21 22 23
=======================================================================
To list the variables currently active in your workspace -
> ls()
It will give the output like -
[1] "a" "fac" "fac2" "ls" "M" "mat" "myData" "names" "v" "vtr" "vtr1" "vtr2" "x" "y" "z"
& if you want to remove some variable from this list -
>remove(a)
It will remove variable 'a' from the above list.
Also I will be using this space to share a thing or two about what I see in R during my time with R which may again help you.
To work on R language will suggest you to download the GUI for this. It will provide you the console & you can clean that console using Ctrl+L
Indexes are not 0 based here in R, index starts from 1.
I have attached the pdf which I tried to study about R language. I am not much impressed by R as given in this PDF.
One can create impressive charts & diagrams using other APIs but what is special in R otherwise I don't know, popularity of R also seems to me some political or business agenda. People propagates such technologies/languages just to make extra money otherwise I don't know why one needs to learn so many languages/technologies. Rest you are also logical :)
=======================================================================
Add a list of numbers to a variable & then sort its contents.
> a <- List(1,5,3,4,2)
> factor(a, sort(a))
[1] 1 5 3 4 2
Levels: 1 2 3 4 5
Basically, use above factor() to get other features else can use sort() directly shown below.
> a <- c("Nitin","Ali","Chandan","Babita")
> sort(a)
[1] "Ali" "Babita" "Chandan" "Nitin"
List of different objects can be created like -
> s <- list(c(1,2), fac, M, a)
> s
[[1]]
[1] 1 2
[[2]]
[1] 1 10
Levels: 1 10
[[3]]
[1] 10 35
[[4]]
[1] <NA> <NA> <NA>
Levels: 21 22 23
=======================================================================
To list the variables currently active in your workspace -
> ls()
It will give the output like -
[1] "a" "fac" "fac2" "ls" "M" "mat" "myData" "names" "v" "vtr" "vtr1" "vtr2" "x" "y" "z"
& if you want to remove some variable from this list -
>remove(a)
It will remove variable 'a' from the above list.
| r_language.pdf |
