m <- matrix(c(200, 100, 0, 80, 200, 20, 20, 80, 100, 0, 20, 180), nrow = 3, ncol = 4)

rownames(m) <- c("0-5", "5-10", "10-30")
colnames(m) <- c("1-10", "10-21", "21-40", "40-60")
t <- cbind(m, c(200+ 80+20+ 0), c(100+200+80+20), c(0+20+100+180))
View(t)

anyone can help me to perform same as like in the picture. Any other way to do like this? I am confused to perform same as like in the picture. above is code .

FJCC
October 2, 2019, 10:57pm
2
Here is one approach to get the basic matrix.

```
m <- matrix(c(200, 100, 0, 80, 200, 20, 20, 80, 100, 0, 20, 180), nrow = 3, ncol = 4)
rownames(m) <- c("0-5", "5-10", "10-30")
colnames(m) <- c("1-10", "10-21", "21-40", "40-60")
m
#> 1-10 10-21 21-40 40-60
#> 0-5 200 80 20 0
#> 5-10 100 200 80 20
#> 10-30 0 20 100 180
RowSum <- rowSums(m)
ColSum <- colSums(m)
m2 <- cbind(m, RowSum)
m2
#> 1-10 10-21 21-40 40-60 RowSum
#> 0-5 200 80 20 0 300
#> 5-10 100 200 80 20 400
#> 10-30 0 20 100 180 300
m3 <- rbind(m2, c(ColSum, sum(ColSum)))
m3
#> 1-10 10-21 21-40 40-60 RowSum
#> 0-5 200 80 20 0 300
#> 5-10 100 200 80 20 400
#> 10-30 0 20 100 180 300
#> 300 300 200 200 1000
```

^{Created on 2019-10-02 by the reprex package (v0.2.1)}

system
Closed
October 23, 2019, 10:57pm
3
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