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Views on the evoland-plus data model

Source: R/evoland_db_views.R
evoland_db_views.Rd

This file adds view active bindings and methods to the evoland_db class using R6's $set() method. These provide computed views on the database without storing additional data.

Active Bindings Added

  • lulc_meta_long_v - Unrolled LULC metadata with one row per source class

  • pred_sources_v - Distinct predictor URLs and their MD5 checksums

  • trans_v - Land use transitions derived from lulc_data_t

  • extent - Spatial extent of coords_t as terra::SpatExtent

  • coords_minimal - Minimal coordinate representation (id_coord, lon, lat)

Methods Added

  • trans_pred_data_v(id_trans) - Returns wide table of transition results and predictor data for a specific transition. Used as input to covariance filtering.

  • trans_rates_dinamica_v(id_period) - Returns transition rates formatted for Dinamica export for a specific period.

  • adjusted_trans_pot_v(id_period_post) - Returns allocation-ready transition potentials: column-scaled to match target transition rates, then row-closed so per-cell change probabilities sum to at most 1.

  • alloc_params_clumpy_v() - Returns allocation parameters in CLUMPY format (area_mean, area_var, elongation per transition).