maf
1
Hello,
Firstable, sorry for my English (i'm french)
First i've a vector : liste1<-c(1:9)
Second a table (1 column) (table$vect) :
1
4
7
4
2
1
8
What did I need to do (how many times appears a number in the data)
1 2
2 1
3 0
4 2
5 0
6 0
7 1
8 1
9 0
I've found "sort" but the result is :
1 2
4 2
2 1
7 1
8 1
How can i do this ? Thank you for your help
FJCC
2
Here is one solution.
DF <- data.frame(VEC = c(1, 4, 7, 4, 2, 1,8))
MyFunc <- function(V) sum(V == DF$VEC)
sapply(1:9, MyFunc)
#> [1] 2 1 0 2 0 0 1 1 0
Created on 2020-11-07 by the reprex package (v0.3.0)
system
Closed
3
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