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 -0.1241795 16.02819
#> 2 0 -0.6127534 13.86542
#> 3 1 0.1606625 15.91691
#> 4 1 -0.6623596 16.21387
#> 5 1 -0.3348517 14.31407
#> 6 2 0.6230116 13.90543
# look at last 3 features
tail(df_phom)
#> dimension birth death
#> 1 0 -0.1241795 16.02819
#> 2 0 -0.6127534 13.86542
#> 3 1 0.1606625 15.91691
#> 4 1 -0.6623596 16.21387
#> 5 1 -0.3348517 14.31407
#> 6 2 0.6230116 13.90543