How do I convert column values to column names in R?

How do I convert column values to column names in R?

To convert a column values to column names, we can use dcast function of reshape2 package. For example, if we have a data frame called df that contains two columns say x and y, where x is categorical and y is numerical. Now if we want to convert the categories in x as column names then it can be done as dcast(df,y~x).

How do I rename a column in a variable in R?

Rename columns with the select() function You can actually use the select() function from dplyr to rename variables. Syntactically, this is almost exactly the same as our code using rename() . We just supply the dataframe and the pair of variable names – the new variable name and the old variable name.

How do you call a column name in R?

To access a specific column in a dataframe by name, you use the $ operator in the form df$name where df is the name of the dataframe, and name is the name of the column you are interested in. This operation will then return the column you want as a vector.

How do I make a column name a row in R?

Method 1: Using row. row.name() function is used to set and get the name of the DataFrame. Apply the row.name() function to the copy of the DataFrame and a name to the column which contains the name of the column with the help of the $ sign.

How do I rename data in R?

If you select option R, a panel is displayed to allow you to enter the new data set name. Type the new data set name and press Enter to rename, or enter the END command to cancel. Either action returns you to the previous panel.

How do you name a data set in R?

How do you find the columns of a data frame?

To access the names of a Pandas dataframe, we can the method columns(). For example, if our dataframe is called df we just type print(df. columns) to get all the columns of the Pandas dataframe.

How do you name rows and columns in R?

Method 1 – Specify all labels

1. Select your R table.
2. In the object inspector, go to Properties > R CODE.
3. To update the table’s column names, add a line to the code like this:
4. To update the table’s row names add a line to the code like this:
5. Add a line with the table_name so the updated table is returned.

How do you set a row name in R?

Method 1 : using rownames() A data frame’s rows can be accessed using rownames() method in the R programming language. We can specify the new row names using a vector of numerical or strings and assign it back to the rownames() method. The data frame is then modified reflecting the new row names.