Select Layers to Data
SelectLayersData(object, targets = NULL, layers = NULL, cast = TRUE, narrow = FALSE, expand.time.invariant = FALSE)
| object | instance of Layers class |
|---|---|
| targets | specifies the targets of layers to be selected, defaulting to |
| layers | specifies the layers to be selected. If given as a named character vector, then layers get renamed
with new names as values, and old names as names per
|
| narrow | narrow the resulting data frame to just the fields containing data (as described by flds in the default wide result) #@param expand.time.invariant for layers without a year column, populate the same value throughout all years where available in other layer(s) #@param cast whether to cast the resulting dataset, or leave it melted, defaults to TRUE |
data.frame with the merged data of selected layers having the following fields:
layer - layer name, possibly renamed
layer0 - original layer name, if fed a named character vector to layers
id_num - numeric id
id_chr - character id
id_name - fieldname of id in original layer csv file
category - category
category_name - fieldname of character in original layer csv file
year - year
val_num - numeric value
val_chr - character value
val_name - fieldname of value in original layer csv file
flds - data fields used for the layer
If neither targets or layers are specified then all layers are returned. If targets and layers are specified, then the union of the two sets of layers are returned, with any renamed layers renamed.