match_rows {glmmrBase}

Generate matrix mapping between data frames

Description

For a data frames 'x' and 'target', the function will return a matrix mapping the rows of 'x' to those of 'target'.

Usage

match_rows(x, target, by)

Arguments

x

data.frame

target

data.frame to map to

by

vector of strings naming columns in 'x' and 'target'

Details

'x' is a data frame with n rows and 'target' a data frame with m rows. This function will return a n times m matrix that maps the rows of 'x' to those of 'target' based on the values in the columns specified by the argument 'by'

Value

A matrix with nrow(x) rows and nrow(target) columns

Examples

df <- nelder(~(cl(10)*t(5)) > ind(10))
df_unique <- df[!duplicated(df[,c('cl','t')]),]
match_rows(df,df_unique,c('cl','t'))