# recode2: bivariate recode In Ecfun: Functions for Ecdat

## Description

Recode `x1` and `x2` per the lexical `codes` table.

## Usage

 `1` ```recode2(x1, x2, codes) ```

## Arguments

 `x1, x2` vectors of the same length assuming a discrete number of levels `codes` a 2-dimensional matrix indexed by the levels of `x1` and `x2`. If `dimnames(codes)` are not provided, they are assumed to `unique(x1)` (or `unique(x2)`).

## Details

1. If length(x1) != length(x2), complain.

2. if(is.logical(x1)) l1 <- c(FALSE, TRUE) else l1 <- unque(x1); ditto for x2.

3. If(missing(codes)) codes <- outer(unique(x1), unique(x2))

4. if(is.null(dim(codes))) dim(codes) <- c(length(unique(x1)), length(unique(x2)))

5. If is.null(rownames(codes)), set as follows: If nrow(codes) == length(unique(x1)), rownames(codes) <- unique(x1). Else, if nrow(codes) = max(x1), set rownames(codes) <- seq(1, max(x1). Else throw an error. Ditto for colnames, ncol, and x2.

6. codes[x1, x2]

## Value

a vector of the same length as x1 and x2.

## Author(s)

Spencer Graves

`dim` `rownames` `link{colnames}`
 ```1 2 3 4 5 6 7 8 9``` ```contrib <- c(-1, 0, 0, 1) contrib0 <- c(FALSE, FALSE, TRUE, FALSE) contribCodes <- recode2(contrib>0, contrib0, c('returned', 'received', '0', 'ERR') ) cC <- c('returned', 'returned', '0', 'received') all.equal(contribCodes, cC) ```