ScaleRepresentationBaseType

A means of capturing the structure of Scale for use as a question response domain or variable value representation. In addition to the basic objects of the representation, the structure defines the dimensions of the scale, an intersect for a multi-dimensional scale, and display layout.

Properties

Name

Type

Description

ScaleDimension

ScaleDimensionType

0..n

A description of a dimension of the scale. Note that most scales will have only one dimension.

DimensionIntersect

DimensionIntersectType

0..n

Identifies the point at which the scales of a multidimensional scale intersect.

DisplayLayout

CodeValueType

0..1

Defines they layout such as containing a drawn scale line, a list of values only, an outline (the boundaries of the area defined by 2 or more intersecting scales such as a diamond of opposites), or some other layout design. Allows for the use of a controlled vocabulary.

Properties Inherited from RepresentationType

Name

Type

Description

RecommendedDataType

CodeValueType

0..1

This field provides the recommended treatment of the data within an application. The value should come from a controlled vocabulary - recommended values include the set found in W3C XML Schema Part 2, but excluding string sub-types, QNAME, and NOTATION. The DDI Alliance has provided a controlled vocabulary (DataType) to support this element at http://www.ddialliance.org/controlled-vocabularies.

GenericOutputFormat

CodeValueType

0..1

This field provides a recommended generic treatment of the data for display by an application. The value should come from a controlled vocabulary.

MeasurementUnit

CodeValueType

0..1

Records the measurement unit, for example, ‘km’, ‘miles’, etc. Supports the use of a controlled vocabulary.

MissingValue

string

0..1

List the values used to represent missing data. Use of MissingValuesReference is preferred. If this content does not match the values provided in the MissingValuesReference, the content of the MissingValuesReference overrides the content of this attribute.

BlankIsMissingValue

boolean

0..1

When value is true a blank or empty variable content should be treated as a missing value. Use of MissingValuesReference is preferred.

ClassificationLevelCode

CodeValueType

0..1

Indicates the type of relationship, nominal, ordinal, interval, ratio, or continuous. Use where appropriate for the representation type. Valid values include: Nominal, Ordinal, Interval, Ratio, Continuous

Item Type Hierarchy

Relationships

The following identified item types reference this type.

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