Main page: https://www.rdocumentation.org/packages/datasets/versions/3.6.2/topics/attenu
head(attenu)
## event mag station dist accel
## 1 1 7.0 117 12 0.359
## 2 2 7.4 1083 148 0.014
## 3 2 7.4 1095 42 0.196
## 4 2 7.4 283 85 0.135
## 5 2 7.4 135 107 0.062
## 6 2 7.4 475 109 0.054
require(graphics)
## check the data class of the variables
sapply(attenu, data.class)
## event mag station dist accel
## "numeric" "numeric" "factor" "numeric" "numeric"
summary(attenu)
## event mag station dist
## Min. : 1.00 Min. :5.000 117 : 5 Min. : 0.50
## 1st Qu.: 9.00 1st Qu.:5.300 1028 : 4 1st Qu.: 11.32
## Median :18.00 Median :6.100 113 : 4 Median : 23.40
## Mean :14.74 Mean :6.084 112 : 3 Mean : 45.60
## 3rd Qu.:20.00 3rd Qu.:6.600 135 : 3 3rd Qu.: 47.55
## Max. :23.00 Max. :7.700 (Other):147 Max. :370.00
## NA's : 16
## accel
## Min. :0.00300
## 1st Qu.:0.04425
## Median :0.11300
## Mean :0.15422
## 3rd Qu.:0.21925
## Max. :0.81000
##
pairs(attenu, main = "attenu data")
coplot(accel ~ dist | as.factor(event), data = attenu, show.given = FALSE)
coplot(log(accel) ~ log(dist) | as.factor(event),
data = attenu, panel = panel.smooth, show.given = FALSE)