DataBackendSpatialFeature: sf::sf as data backend

In dymium-org/dymiumCore: A Toolkit for Building a Dynamic Microsimulation Model for Integrated Urban Modelling

Description

For storing spatial data. The data is stored as a data.table but has methods to transform the object back to its intiail sf format.

Format

R6::R6Class object inheriting from DataBackendDataTable<-DataBackendDataFrame<-DataBackend.

Construction

x <- DataBackendSpatialFeature$new(data)

• data :: sf::sf
  The input must be an object of class sf::sf (Simple feature) from the sf package.

• key :: NULL|character(1)
  The key of .data.

Fields

• NULL
  

Public Methods

• add(.data)
  (a sf::sf data.frame) -> NULL
  Add data.

• get_sf()
  Get data as an sf::sf object.

Note

This class could be furthur improved by using a data.table to store non-spatial information of the data object and another just to store the spatial features. Both objects are linkable through a id column. To make sure both spatial and non-spatial information always match we can invoke a consistency check between the two everytime the user or its methods try to access private$.data.

dymium-org/dymiumCore documentation built on July 18, 2021, 5:10 p.m.