Boolean operation on codings.

Return the result codings of the Boolean operation.

and(CT1, CT2)

or(CT1, CT2)

not(CT1, CT2)

Arguments

CT1	Coding of code one.
CT2	Coding of code two.

Details

CT1 and CT2 are subset of getCodingTable of a specific code or returned value of getCodingsByOne. In former situation, only columns of "index1", "index2","fid","filename" from CT1 and CT2 are used by this function.

These functions are the same as %and%, %or%, %not%.

Value

An object of class "codingsByOne" and "data.frame". It consists:

index1

index2

fid

filename

rowid

coding

The codings, or the text segments.

Author

Ronggui HUANG

See also

relation, getCodingTable, %and%

Examples

if (FALSE) {
a <- getCodingTable()
c1 <- subset(a,cid==6)
c2 <- subset(a,cid==24)
ans <- and(c1, c2)
ans ## put it into a widget for inspection

## another way to do the same
and(getCodingsByOne(6), getCodingsByOne(24))

## or operator
or(getCodingsByOne(6), getCodingsByOne(24))

## not operator
not(getCodingsByOne(6), getCodingsByOne(24))
}