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Class "NumericGap"

Source: R/NumericGap.R
NumericGap-class.Rd

Class NumericGap is responsible for creating instances of input fields with numeric type of answers in question Entry type assessment tasks according to the QTI 2.1 standard.

Slots

response_identifier

A character value representing an identifier for the answer. By default, it is generated as 'id_gap_dddd', where dddd represents random digits.

points

A numeric value, optional, representing the number of points for this gap. Default is 1.

placeholder

A character value, optional, responsible for placing helpful text in the text input field in the content delivery engine.

expected_length

A numeric value, optional, responsible for setting the size of the text input field in the content delivery engine.

solution

A numeric value containing the correct answer for this numeric entry.

tolerance

A numeric value, optional, specifying the value for the upper and lower boundaries of the tolerance rate for candidate answers. Default is 0.

tolerance_type

A character value, optional, specifying the tolerance mode. Possible values:

  • "exact"

  • "absolute" - Default.

  • "relative"

include_lower_bound

A boolean value, optional, specifying whether the lower bound is included in the tolerance rate. Default is TRUE.

include_upper_bound

A boolean value, optional, specifying whether the upper bound is included in the tolerance rate. Default is TRUE.

See also

Entry, TextGap, TextGapOpal and InlineChoice.

Examples

ng <- new("NumericGap",
          response_identifier = "id_gap_1234",
          points = 1,
          placeholder = "use this format xx.xxx",
          solution = 5,
          tolerance = 1,
          tolerance_type = "relative",
          include_lower_bound = TRUE,
          include_upper_bound = TRUE)