CODEWITHSUNDEEP
rdataset
user3328429
user3328429

Reputation: 33

how to view content of data set in packages in r?

I am very new in R.I want to see the content of data set in r packages. For example

In the case of "arules" package .I want to see the content of dataset Adult.

I tried with following codes.But not working 

library("arules")
data(Adult)
View(Adult)

its not working.

and also

data(Adult)
Adult<-as("Adult",matrix)

??

Upvotes: 2

Views: 3999

Answers (3)

Ven Yao
Ven Yao

Reputation: 3710

The dataset Adult is a special dataset defined by the author of arules.

> library("arules")
> data(Adult)
> class(Adult)
[1] "transactions"
attr(,"package")
[1] "arules"
> str(Adult)
Formal class 'transactions' [package "arules"] with 4 slots
  ..@ transactionInfo:'data.frame': 48842 obs. of  1 variable:
  .. ..$ transactionID: Factor w/ 48842 levels "1","10","100",..: 1 11112 22223 33334    43288 44399 45510 46621 47732 2 ...
  ..@ data           :Formal class 'ngCMatrix' [package "Matrix"] with 5 slots
  .. .. ..@ i       : int [1:612200] 1 10 25 32 35 50 59 61 63 65 ...
  .. .. ..@ p       : int [1:48843] 0 13 26 39 52 65 78 91 104 117 ...
  .. .. ..@ Dim     : int [1:2] 115 48842
  .. .. ..@ Dimnames:List of 2
  .. .. .. ..$ : NULL
  .. .. .. ..$ : NULL
  .. .. ..@ factors : list()
  ..@ itemInfo       :'data.frame': 115 obs. of  3 variables:
  .. ..$ labels   :Class 'AsIs'  chr [1:115] "age=Young" "age=Middle-aged" "age=Senior"   "age=Old" ...
  .. ..$ variables: Factor w/ 13 levels "age","capital-gain",..: 1 1 1 1 13 13 13 13 13  13 ...
  .. ..$ levels   : Factor w/ 112 levels "10th","11th",..: 111 63 92 69 30 54 65 82 90   91 ...
  ..@ itemsetInfo    :'data.frame': 0 obs. of  0 variables

If you want to see the content of Adult, you can use this:

> aa <- Adult@data
> class(aa)
[1] "ngCMatrix"
attr(,"package")
[1] "Matrix"
> str(aa)
Formal class 'ngCMatrix' [package "Matrix"] with 5 slots
  ..@ i       : int [1:612200] 1 10 25 32 35 50 59 61 63 65 ...
  ..@ p       : int [1:48843] 0 13 26 39 52 65 78 91 104 117 ...
  ..@ Dim     : int [1:2] 115 48842
  ..@ Dimnames:List of 2
  .. ..$ : NULL
  .. ..$ : NULL
  ..@ factors : list() 
> dim(aa)
[1]   115 48842
> aa[1:5,1:5]
5 x 5 sparse Matrix of class "ngCMatrix"

[1,] . . . . .
[2,] | . | . |
[3,] . | . | .
[4,] . . . . .
[5,] . . . . .

Upvotes: 0

Mikko
Mikko

Reputation: 7755

After loading the data (data(Adult)) you can just write Adult to see the entire data set. If the dataset is large, you could also write head(Adult) or tail(Adult) to look at the 10 first or last rows of the dataset, respectively. summary(Adult) gives you a summary of the dataset. str(Adult) shows the structure, i.e. in what format various entries are stored.

Upvotes: 2

varun cyriac
varun cyriac

Reputation: 161

use

Adult<-as(Adult,"matrix").

Upvotes: 0

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