Values Attributes
This website currently implements six different types of attributes: Value, Values, Boolean, Category, Location and Range.
Values Type
Values attributes contain more than one number representing the value of a measurement or several related measurements. For example, the Tire Diameter attribute is the diameters of the front and rear tire (which may be different).
See also: Boolean Attributes, Category Attributes, Location Attributes, Range Attributes, and String Attributes, Value Attributes.
Values Attributes
The current values attributes are:
Unit of Measure
Attributes of this type usually have an associated unit of measure, such as inches.
Search Criteria
When a value attribute is used as a search criteria, you can specify an upper and lower value indicating the range of the attribute values that you want to consider. For the Tire Diameter, for example, you specify the lowest and highest diameter that you want to consider and bikes with a front or rear tire diameters outside of that range are excluded (removed) from consideration, while bikes with a price in the range are retained.
Missing Attributes
We want to have a value in our database for every attribute for every bike model and frame size but in some cases that information is not provided by the manufacturer or other sources. In that case the attribute does not have a value which we refer to as missing. Missing is not an attribute type, but rather a possible value for any attribute.
Search Criteria
Most attributes are missing values for at least some bikes. When you add a search criteria for an attribute that has some missing values, the percentage of missing values is displayed and you are given the choice of including bikes where that value is missing or excluding them. If the percentage of missing values is low then the choice will not have much impact either way. If the percentage is high, however, you may want to select the "missing" option to include bikes that are missing that attribute.