Манипуляции с фреймом данных

Введение в R для финансов

Lore Dirick

Manager of Data Science Curriculum at Flatiron School

Подмножества фрейма данных

debt[3:6,]

  name payment
3  Dan     150
4  Rob      50
5  Rob      75
6  Rob     100

debt[1:3, 2]

100 200 150

debt[1:3, 2, drop = FALSE]

debt$payment

100 200 150  50  75 100

# This works, but is not informative nor robust
debt[1:3,]

# Much more informative!
subset(debt, name == "Dan")

  name payment
1  Dan     100
2  Dan     200
3  Dan     150

subset(debt, payment == 100)

  name payment
1  Dan     100
6  Rob     100

Введение в R для финансов