R: Grade Single Numbers

grade.number {grade}

R Documentation

Grade Single Numbers

Description

Checks studentans against correctans. For scalars only.

Usage

grade.number(correctans, studentans, tolerance=0.01,
             useeval=TRUE, usena=FALSE, useinf=FALSE, quiet=TRUE)

Arguments

`correctans`	a vector of type `numeric` or a `string`
`studentans`	a vector of type `numeric` or a `string`
`tolerance`	a `string` or `numeric` representing the accepted component wise tolerance
`useeval`	`TRUE` or `FALSE` indicates whether or not to use 'eval' on strings
`usena`	`TRUE` or `FALSE` indicating whether or not `NA` is an accepted value
`useinf`	`TRUE` or `FALSE` indicating whether or not `Inf` and `-Inf` are accepted values
`quiet`	`TRUE` or `FALSE`. If `TRUE` there are more warning messages when checks fail. Can be helpful for debugging.

Value

TRUE if studentans is within tolerance of correctans. FALSE otherwise.

Note

The grade main page contains a discussion of the common parameters correctans, studentans, useeval, usena, useinf, quiet.

Examples

grade.number(1, "1") # TRUE
grade.number(1, "1.1", tolerance=".01") # FALSE

grade.number(pi, "3.142", tolerance=".001") # TRUE

grade.number(1, "[1]") # TRUE

[Package grade version 0.2-1 Index]