• Orphelia Ellogne (ellognea)
• Huijue Chen (huijuechen)
• Luo Yang (lyiris22)

For this project we would like to re-implement R’s gather, spread and drop_na functions, which exists in the tidyverse package. Our functions would have similar or simpler features compared to these functions. We will give them the following names, respectively.

• my_gather() : Make data from wide to long by combining columns. For selected columns, put the columns names into a column of keys, and the values into a column of values.
• my_spread() : Separate existing columns into multiple columns. Select a ‘key’ column whose content will be the names of the new columns. Select a ‘value’ column whose content will be the values of the new columns.
• my_dropna() : Remove the entire rows that contain NA values from a dataframe.

To test these functions , our package will include an additonal function that create a small dataframe with two columns.

Our functions were inspired from the following functions that exist in the tidyverse package:

• tidyverse.gather
• tidyverse.spread
• tidyverse.drop_na