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Get common value scale

Source: R/qstnr.gen.R
common_val_scale.Rd

Determines the greatest common values scale between two value scales x and y in the hierarchy nominal < ordinal < interval < ratio.

Usage

common_val_scale(x, y)

Arguments

x

First value scale.

y

Second value scale.

Value

A character scalar.

Details

Note that

  • the value scales interval and ratio are assumed to always be in ascending order.

  • the value scale none is treated specially in the sense that it is ignored when finding the common value scale between none and any other value scale.

See also

Other auxiliary functions: as_int_vals(), group_title(), val_set()

Examples

qstnr::common_val_scale("interval", "nominal")
#> [1] "nominal"
qstnr::common_val_scale("interval", "ratio")
#> [1] "interval"
qstnr::common_val_scale("ordinal_ascending", "ordinal_descending")
#> [1] "nominal"

try(
  qstnr::common_val_scale("ordinal_descending", "ratio")
)
#> Error in qstnr::common_val_scale("ordinal_descending", "ratio") : 
#>   Incompatible value scales "ordinal_descending" and "ratio" provided.