Misc$to.index.expr {IdMappingAnalysis} | R Documentation

## Convert expression into index expression for a given list or data frame object

### Description

Convert expression into index expression for a given list or data frame object. Uses the input expression to generate the corresponding expression on a given list using the expression variables to address the list items, i.e. for an object X and expression 'a+b' generate the expression 'X$a + X$b'

### Usage

    ## Static method (use this):
    ## Misc$to.index.expr(obj, expr, ...)

    ## Don't use the below:
    ## S3 method for class 'Misc'
    to.index.expr(static, obj, expr, ...)

### Arguments

`obj` | Input `list` or 2data.frame -derived object on which the expression to be constructed.
`expr` | `expression` or `character` string from which the indexed expression on the input object to be constructed.
`...` | Not used

### Value

Indexed `expression` on a given `list` or `data.frame` object.

### Author(s)

Alex Lisovich, Roger Day

### See Also

For more information see `Misc`.

### Examples

    ## Not run:
     indexed.expression<-to.index.expr(G,"a | b&c");

    ## End(Not run)

[Package IdMappingAnalysis version 1.26.0 Index]