editrules (version 2.2-0)

checkRows: Check rows of data.frame against edits.

Description

This is an S3 generic function for checking rows of a data.frame against a number of edit restrictions. The edits can be entered either in character data.frame or editmatrix format.

Usage

checkRows(E, dat)
  ## S3 method for class 'editmatrix':
checkRows(E, dat)
  ## S3 method for class 'character':
checkRows(E, dat)
  ## S3 method for class 'data.frame':
checkRows(E, dat)

Value

a logical vector with length equal to nrow(dat). If a row is violates no edit restrictions, TRUE otherwise FALSE

Details

If edits are represented as a character vector, the entries of E are parsed and evaluated in the environment of dat

If the edits are represented in a data.frame, the data.frame must have the format described in editmatrix. The edits are coerced to a character vector, and passed to checkRows.character.

If the edits are represented by an editmatrix (representing linear (in)equalities) verbose edits are extracted and passed on to checkRows.character

See Also

violatedEdits

Examples

# Using character vector to define contraints
E <- editmatrix(c( "x+3*y==2*z",
                  "x==z"))
print(E)

dat <- data.frame( x = c(0,2,1)
                 , y = c(0,0,1)
                 , z = c(0,1,1)
                 )
# valid rows? editmatrix method
checkRows(E, dat)


# example using the character method.
data(women)
e <- c("height<=71", "weight/height>=2.1")
valid <- checkRows(e,women)
women[valid,]

# same example, using data.frame method
ef <- data.frame(
    name=c("rule 1", "rule 2"), 
    edit=e, 
    description=c("descr1","descr2"))
checkRows(ef,women)