Methods to Upload a Column to a Knowledge Body in R (With Examples)

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There are 3 usual techniques so as to add a untouched column to a knowledge body in R:

1. Importance the $ Operator

df$untouched <- c(3, 3, 6, 7, 8, 12)

2. Importance Brackets

df['new'] <- c(3, 3, 6, 7, 8, 12)

3. Importance Cbind

df_new <- cbind(df, untouched)

This instructional supplies examples of how one can usefulness every of those modes in observe the use of please see information body:

#manufacture information body
df <- information.body(a = c('A', 'B', 'C', 'D', 'E'),
                 b = c(45, 56, 54, 57, 59))

#view information body
df

  a  b
1 A forty five
2 B 56
3 C 54
4 D 57
5 E 59

Instance 1: Importance the $ Operator

Please see code displays how one can upload a column to a knowledge body through the use of the $ operator:

#outline untouched column so as to add
untouched <- c(3, 3, 6, 7, 8)

#upload column referred to as 'untouched'
df$untouched <- untouched

#view untouched information body
df 

  a  b untouched
1 A forty five   3
2 B 56   3
3 C 54   6
4 D 57   7
5 E 59   8

Instance 2: Importance Brackets

Please see code displays how one can upload a column to a knowledge body through the use of brackets:

#outline untouched column so as to add
untouched <- c(3, 3, 6, 7, 8)

#upload column referred to as 'untouched'
df['new'] <- untouched

#view untouched information body
df 

  a  b untouched
1 A forty five   3
2 B 56   3
3 C 54   6
4 D 57   7
5 E 59   8

Instance 3: Importance Cbind

Please see code displays how one can upload a column to a knowledge body through the use of the cbind serve as, which is cut for column-bind:

#outline untouched column so as to add
untouched <- c(3, 3, 6, 7, 8)

#upload column referred to as 'untouched'
df_new <- cbind(df, untouched)

#view untouched information body
df_new

  a  b untouched
1 A forty five   3
2 B 56   3
3 C 54   6
4 D 57   7
5 E 59   8

You’ll be able to if truth be told usefulness the cbind serve as so as to add a couple of untouched columns without delay:

#outline untouched columns so as to add
new1 <- c(3, 3, 6, 7, 8)
new2 <- c(13, 14, 16, 17, 20) 

#upload columns referred to as 'new1' and 'new2'
df_new <- cbind(df, new1, new2)

#view untouched information body
df_new

  a  b new1 new2
1 A forty five    3   13
2 B 56    3   14
3 C 54    6   16
4 D 57    7   17
5 E 59    8   20

Bonus: Eager Column Names

Upcoming including a number of columns to a knowledge body, you’ll usefulness the colnames() serve as to specify the column names of the untouched information body:

#manufacture information body
df <- information.body(a = c('A', 'B', 'C', 'D', 'E'),
                 b = c(45, 56, 54, 57, 59),
                 new1 = c(3, 3, 6, 7, 8),
                 new2 = c(13, 14, 16, 17, 20))

#view information body
df

  a  b new1 new2
1 A forty five    3   13
2 B 56    3   14
3 C 54    6   16
4 D 57    7   17
5 E 59    8   20

#specify column names
colnames(df) <- c('a', 'b', 'c', 'd')

#view information body
df

  a  b c  d
1 A forty five 3 13
2 B 56 3 14
3 C 54 6 16
4 D 57 7 17
5 E 59 8 20

You’ll be able to in finding extra R tutorials right here.

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