ConfigShowSimilarEntries {s2dv}

Find Similar Entries In Tables Of Datasets

Description

These functions help in finding similar entries in tables of supported datasets by comparing all entries with some given information.
This is useful when dealing with complex configuration files and not sure if already support certain variables or datasets.
At least one field must be provided in ConfigShowSimilarEntries(). Other fields can be unspecified and won't be taken into account. If more than one field is provided, sameness is avreaged over all provided fields and entries are sorted from higher average to lower.

Usage

ConfigShowSimilarEntries(
  configuration,
  dataset_name = NULL,
  var_name = NULL,
  main_path = NULL,
  file_path = NULL,
  nc_var_name = NULL,
  suffix = NULL,
  varmin = NULL,
  varmax = NULL,
  n_results = 10
)

Arguments

configuration

Configuration object obtained either from ConfigFileCreate() or ConfigFileOpen().

dataset_name

Optional dataset name to look for similars of.

var_name

Optional variable name to look for similars of.

main_path

Optional main path to look for similars of.

file_path

Optional file path to look for similars of.

nc_var_name

Optional variable name inside NetCDF file to look for similars of.

suffix

Optional suffix to look for similars of.

varmin

Optional variable minimum to look for similars of.

varmax

Optional variable maximum to look for similars of.

n_results

Top 'n_results' alike results will be shown only. Defaults to 10 in ConfigShowSimilarEntries() and to 5 in ConfigShowSimilarVars().

Details

Sameness is calculated with string distances as specified by Simon White in [1].

Value

These functions return information about the found matches.

References

[1] Simon White, string seamness: http://www.catalysoft.com/articles/StrikeAMatch.html

See Also

ConfigApplyMatchingEntries, ConfigEditDefinition, ConfigEditEntry, ConfigFileOpen, ConfigShowSimilarEntries, ConfigShowTable

Examples

# Create an empty configuration file
config_file <- paste0(tempdir(), "/example.conf")
ConfigFileCreate(config_file, confirm = FALSE)
# Open it into a configuration object
configuration <- ConfigFileOpen(config_file)
# Add an entry at the bottom of 4th level of file-per-startdate experiments 
# table which will associate the experiment "ExampleExperiment2" and variable 
# "ExampleVariable" to some information about its location.
configuration <- ConfigAddEntry(configuration, "experiments", "last", 
                "ExampleExperiment2", "ExampleVariable", 
                "/path/to/ExampleExperiment2/", 
                "ExampleVariable/ExampleVariable_$START_DATE$.nc")
# Edit entry to generalize for any variable. Changing variable needs .
configuration <- ConfigEditEntry(configuration, "experiments", 1, 
                var_name = "Var.*", 
                file_path = "$VAR_NAME$/$VAR_NAME$_$START_DATE$.nc")
# Look for similar entries
ConfigShowSimilarEntries(configuration, dataset_name = "Exper", 
                        var_name = "Vari")