list_columns: List columns verbs

In MomX/Momocs2: Modern Morphometrics and Shape Manipulation

Description

List columns verbs

Usage

col_present(x, col)

coo_present(x, coo)

coe_present(x, coe)

coo_nb(x)

coe_nb(x)

coo_only(x)

coe_only(x)

coo_drop(x)

coe_drop(x)

coo_select(x, ...)

coe_select(x, ...)

coo_names(x)

coe_names(x)

Arguments

x	mom_tbl
col	column names to test for existence
coo, coe	column names to test for existence
...	additional parameters, just like in dplyr::select

Functions

• col_present: test coo columns existence

• coo_present: test coo columns existence

• coe_present: test coe columns existence

• coo_nb: count the number of coo columns

• coe_nb: count the number of coe columns

• coo_only: only retain coo columns

• coe_only: only retain coe columns

• coo_drop: drop coo columns

• coe_drop: drop coe columns

• coo_select: use select among coo columns

• coe_select: use select among coe columns

• coo_names: return names of coo columns

• coe_names: return names of coe columns

Examples

bot %>% coo_nb()
bot %>% coo_names()
bot %>% coo_present(coo)
bot %>% coo_present(foo)  # non existing column
bot %>% coo_only()
bot %>% coo_drop()
bot$coo2 <- bot$coo
bot %>% coo_select(coo2)

hearts %>% col_present(ldk)

# and works the same for coe columns

MomX/Momocs2 documentation built on May 13, 2020, 4:28 a.m.