concstats_mstruct {concstats} | R Documentation |
Set of different market structure measures to reflect a given market structure.
concstats_mstruct(x, type = c("firm", "nrs_eq", "top", "top3", "top5",
"all"), na.rm = TRUE, digits = NULL)
x |
A non-negative numeric vector. |
type |
A character string of the measure to be calculated, can be abbreviated with the first letter. Defaults to "firm". Input is not case-sensitive. |
na.rm |
A logical vector that indicates whether |
digits |
A non-null value for digits specifies the minimum number of
significant digits to be printed in values. The default is |
concstats_mstruct
is a wrapper for the proposed structural measures
concstats_firm()
, returns the number of firms with a given market share
concstats_nrs_eq()
computes the reciprocal of the HHI, which indicates
the equivalent number of firms of the same size,
concstats_top()
, concstats_top3()
, and concstats_top5()
calculate the share of the top (top 3 and top 5) firm(s) and returns the
value in percentage. concstats_all_mstruct()
computes all measures in
a one step procedure. All measures can be computed individually.
A single calculated numeric measure or data frame
.
The vector of market shares should be in a decimal form corresponding to total share of individual firms/units.The sum of the vector should sum up to 1.
concstats_concstats()
,concstats_comp()
,concstats_inequ()
# a vector of market shares
x <- c(0.35, 0.4, 0.05, 0.1, 0.06, 0.04)
# the number of firms with market share
concstats_mstruct(x, type = "firm")
# Calculate top market share individually
concstats_top(x)
# Calculate the market structure group measures
concstats_mstruct(x, type = "all", digits = 2)