Returns the first part of a PHom instance.
# S3 method for class 'PHom'
head(x, ...)# create sample persistence data
df <- data.frame(dimension = c(0, 0, 1, 1, 1, 2),
birth = rnorm(6),
death = rnorm(6, mean = 15))
df_phom <- as.PHom(df)
# look at first 3 features
head(df_phom)
#> dimension birth death
#> 1 0 -1.8638951 14.87582
#> 2 0 -1.2745089 14.38725
#> 3 1 -1.7817708 15.16066
#> 4 1 -0.5085934 14.33764
#> 5 1 -1.7368783 14.66515
#> 6 2 0.0404813 15.62301
# look at last 3 features
tail(df_phom)
#> dimension birth death
#> 1 0 -1.8638951 14.87582
#> 2 0 -1.2745089 14.38725
#> 3 1 -1.7817708 15.16066
#> 4 1 -0.5085934 14.33764
#> 5 1 -1.7368783 14.66515
#> 6 2 0.0404813 15.62301