D Exercise 02

Last updated: 2023-10-17 21:45:14

D.1 Materials

The materials for this exercise are:

  • Time series and function definitions (Chapter 3)
  • Tables, conditionals and loops (Chapter 4)

D.2 Question 1

  • Read the rainfall.csv file into a data.frame object.
  • Calculate and print a vector with the station names where at least one of the months has >205 mm of rainfall.
## [1] "Kfar Mahol" "Meron"      "Horashim"
  • You can define and use the vector m with month names in your code, to subset the columns with monthly rainfall amounts, as shown in Section 4.4.3:
m = c('sep','oct','nov','dec','jan','feb','mar','apr','may')

(50 points)

D.3 Question 2

  • Create the value and time vectors representing the Kinneret water level time series in November and May during 1991-2011, using the expressions from Section 3.1.3.
  • Plot the water level in November (month '11') as function of water level in May (month '05'), between 1991 and 2011, where each point represents one year. The points need to be are connected in chronological order.
  • Add text labels marking the water levels in 1991 and 2011.
Water level of lake Kinneret in May and November over time

Figure D.1: Water level of lake Kinneret in May and November over time

(50 points)