In huizezhang-sherry/cubble: A Vector Spatio-Temporal Data Structure for Data Analysis

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
library(cubble)
library(dplyr)

This vignette documents miscellaneous examples and questions received regarding the cubble package.

Why summarising of temporal data by station is not in temporal form?

Q: I'm trying to summarise the average maximum temperature by station. I'm not sure why the summarise function is not returning a temporal object.

climate_mel |> 
  face_temporal() |> 
  summarise(tmax_avg = mean(tmax, na.rm=TRUE))

A: This operation should be performed in the spatial form. The form to use for an operation depends on the structure of the result. If the result has each key in a row without temporal index, it should be operated in the spatial form (example here):

climate_mel |> 
  rowwise() |> 
  mutate(tmax_avg = mean(ts$tmax, na.rm=TRUE))

The same treatment applies, if your spatial cubble is also an sf object.

huizezhang-sherry/cubble documentation built on Oct. 15, 2024, 8:12 a.m.