I have been given a large germination data set and need to calculate a running cumulative germination count by week. (Thanks in advance)
Example dataset
df <- read.table(text="
Treatment Species Temp Week Germination
1 T1 A 5 1 1
2 T1 A 5 2 2
3 T1 A 5 3 3
4 T2 A 10 1 3
5 T2 A 10 2 2
6 T2 A 10 3 1", header=TRUE)
# Treatment Species Temp Week Germination
<chr> <chr> <int> <int> <int>
1 T1 A 5 1 1
2 T1 A 5 2 2
3 T1 A 5 3 3
4 T2 A 10 1 3
5 T2 A 10 2 2
6 T2 A 10 3 1
Anticipated Oucome
Treatment Species Temp Week Germination Cum_Germination
<chr> <chr> <int> <int> <int> <int>
1 T1 A 5 1 1 1
2 T1 A 5 2 2 3
3 T1 A 5 3 3 6
4 T2 A 10 1 3 3
5 T2 A 10 2 2 5
6 T2 A 10 3 1 6
