54 `groupedHyperframe`

The examples in Chapter 54 require

library(groupedHyperframe)
library(survival)

Chapter 54 outlines the S3 methods currently not planned for the class 'groupedHyperframe' (Chapter 25).

54.1 Use `groupedHyperframe` as `grouped_ppp()` input

Listing 54.1 creates a grouped hyper data frame lung_g2 which retains the \(x\)- and \(y\)-coords,

Listing 54.1: Example: lung_g2 retaining \(x\)- and \(y\)-coords

lung_g2 = wrobel_lung |>
  within.data.frame(expr = {
    dapi = NULL
  }) |>
  as.groupedHyperframe(group = ~ patient_id/image_id)
lung_g2
# Grouped Hyperframe: ~patient_id/image_id
# 
# 15 image_id nested in
# 3 patient_id
# 
#            x         y     hladr phenotype          image_id    patient_id gender    OS age
# 1  (numeric) (numeric) (numeric)  (factor) [40864,18015].im3 #01 0-889-121      F 3488+  85
# 2  (numeric) (numeric) (numeric)  (factor) [42689,19214].im3 #01 0-889-121      F 3488+  85
# 3  (numeric) (numeric) (numeric)  (factor) [42806,16718].im3 #01 0-889-121      F 3488+  85
# 4  (numeric) (numeric) (numeric)  (factor) [44311,17766].im3 #01 0-889-121      F 3488+  85
# ✂️ --- output truncated --- ✂️

A curious reader may wonder, is it possible to create a grouped hyper data frame with one-and-only-one ppp-hypercolumn, from a grouped hyper data frame? In other words, can we convert the grouped hyper data frame lung_g2 into something similar to the grouped hyper data frame s (Section 3.1)? Unfortunately, the author does not implement such functionality for package groupedHyperframe (v0.3.2.20251225).

54.1 Use groupedHyperframe as grouped_ppp() input

54.1 Use `groupedHyperframe` as `grouped_ppp()` input