Create a new colum in a dataframe using a function
So I think I am haveing a simple problem.
I have a dataframe (my_data), that looks like this
Treatment Amount Duration
a 5 3000
b 8 2000
c 6 1000
d 2 5000
Now I want to create a new dataframe (my_data_1) which adds a new colom based on a simple function Duration/Amount.
my_data_1 should look like this:
Treatment Amount Duration Mean duration
a 5 3000 600
b 8 2000 250
c 6 1000 167
d 2 5000 2500
I tried to write a function and implement it into my dataframe
mean_duration <- function(md){my_data$Duration / my_data$Amount}
my_data_1$md <- with(my_data, ave(Duration, Amount, FUN = mean_duration))
Where did I go wrong?
function dataframe
asked Nov 13 '18 at 13:39
FelixFelix
82
add a comment |
So I think I am haveing a simple problem.
I have a dataframe (my_data), that looks like this
Treatment Amount Duration
a 5 3000
b 8 2000
c 6 1000
d 2 5000
Now I want to create a new dataframe (my_data_1) which adds a new colom based on a simple function Duration/Amount.
my_data_1 should look like this:
Treatment Amount Duration Mean duration
a 5 3000 600
b 8 2000 250
c 6 1000 167
d 2 5000 2500
I tried to write a function and implement it into my dataframe
mean_duration <- function(md){my_data$Duration / my_data$Amount}
my_data_1$md <- with(my_data, ave(Duration, Amount, FUN = mean_duration))
Where did I go wrong?
function dataframe
asked Nov 13 '18 at 13:39
FelixFelix
82
add a comment |
So I think I am haveing a simple problem.
I have a dataframe (my_data), that looks like this
Treatment Amount Duration
a 5 3000
b 8 2000
c 6 1000
d 2 5000
Now I want to create a new dataframe (my_data_1) which adds a new colom based on a simple function Duration/Amount.
my_data_1 should look like this:
Treatment Amount Duration Mean duration
a 5 3000 600
b 8 2000 250
c 6 1000 167
d 2 5000 2500
I tried to write a function and implement it into my dataframe
mean_duration <- function(md){my_data$Duration / my_data$Amount}
my_data_1$md <- with(my_data, ave(Duration, Amount, FUN = mean_duration))
Where did I go wrong?
function dataframe
asked Nov 13 '18 at 13:39
FelixFelix
82
So I think I am haveing a simple problem.
I have a dataframe (my_data), that looks like this
Treatment Amount Duration
a 5 3000
b 8 2000
c 6 1000
d 2 5000
Now I want to create a new dataframe (my_data_1) which adds a new colom based on a simple function Duration/Amount.
my_data_1 should look like this:
Treatment Amount Duration Mean duration
a 5 3000 600
b 8 2000 250
c 6 1000 167
d 2 5000 2500
I tried to write a function and implement it into my dataframe
mean_duration <- function(md){my_data$Duration / my_data$Amount}
my_data_1$md <- with(my_data, ave(Duration, Amount, FUN = mean_duration))
Where did I go wrong?
function dataframe
function dataframe
asked Nov 13 '18 at 13:39
FelixFelix
82
asked Nov 13 '18 at 13:39
FelixFelix
82
asked Nov 13 '18 at 13:39
FelixFelix
82
asked Nov 13 '18 at 13:39
FelixFelix
82
asked Nov 13 '18 at 13:39
FelixFelix
82
82
add a comment |
add a comment |
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