Naming your columns / rows
Let's look at cash
again:
cash
comp cash yr
1 A 1000 1
2 A 4000 3
3 A 550 4
4 B 1500 1
5 B 1100 2
6 B 750 4
7 B 6000 5
Wait, that's not right! It looks like someone has changed your column names! Don't worry, you can change them back using colnames()
just like you did with names()
back with vectors.
Similarly, you can change the row names using rownames()
, but this is less common.
This exercise is part of the course
Introduction to R for Finance
Exercise instructions
- The altered data frame
cash
is in your workspace. - Fix your column names by using
colnames()
and assigning a character vector of"company"
,"cash_flow"
, and"year"
in that order. - Print out the fixed
colnames()
ofcash
.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Fix your column names
# Print out the column names of cash