inner_t_index_calculation: Calculates time-dependent index when nodes weights or barriers passability are changing - not for exporting

Description

Calculates time-dependent index when nodes weights or barriers passability are changing - not for exporting

Usage

inner_t_index_calculation(
  graph,
  barriers_metadata,
  id_barrier,
  year,
  pass_u,
  pass_d,
  weights_metadata,
  weight,
  nodes_id,
  parallel,
  ncores,
  index_type,
  index_mode,
  c_ij_flag,
  B_ij_flag,
  dir_fragmentation_type,
  pass_confluence,
  field_B,
  dir_distance_type,
  disp_type,
  param_u,
  param_d,
  param,
  param_l
)

Value

a data.frame with a 'year' field and related connectity index. If index_type = "reach", the data.frame is organized by 'year' and 'name'.

Arguments

graph: an object of class igraph. Can be both directed or undirected.
barriers_metadata: data.frame that must contain a column having the same name as the 'id_barrier' attribute of the graph, and two columns with the corresponding upstream and downstream improved passabilities (see pass_u and pass_d), and a column with the year passability was changed. This data frame can be obtained from easily-formatted data with the function t_passability_sequencer.
id_barrier: graph edges numeric attribute used to label barriers. Default is "id_barrier". It should be present in the 'barriers metadata' input as well.
year: field of the 'barriers metadata' where temporal information on the changes in passabiity is stored.
pass_u: check index_calculation function.
pass_d: check index_calculation function.
weights_metadata: data.frame that must contain a column having the same name as the 'nodes_id' attribute of the graph, a column with he corresponding weight information (see 'weight' parameter), and a column with the year weight was changed. This data frame can be obtained from easily-formatted data with the function t_weight_sequencer.
weight: param weight graph vertex attribute used to assign weights to the reaches (nodes). Default is "length".
nodes_id: graph vertex attribute used to univoquely label reaches (nodes). Default is "name".
parallel: logical value to flag if parallel option is to be used.
ncores: define how many cores are used in parallel processing. Active only when parallel = TRUE
index_type: check index_calculation function.
index_mode: check index_calculation function.
c_ij_flag: check index_calculation function.
B_ij_flag: check index_calculation function.
dir_fragmentation_type: check index_calculation function.
pass_confluence: check index_calculation function.
field_B: check index_calculation function.
dir_distance_type: check index_calculation function.
disp_type: check index_calculation function.
param_u: check index_calculation function.
param_d: check index_calculation function.
param: check index_calculation function.