Introduction to GIS Learning Objectives Lecture Outline

Attributes• Description or characteristic of afeature• Possible attributes for the featureTree– Height– Diameter– Species– Condition– AgeAttribute Values• The value given to an attribute• Possible values for the attributesof a Tree feature– Height = 15m– Diameter = 0.75m– Species = Oak– Condition = Good– Age = 8 yearsTypes of Attribute Values• There are a number of differenttypes of attribute valuesFeature Attribute Attribute ValuesCharacter Pole Pole ID ABC123Numeric Pole Height 15mMenu Pole Condition GoodAveragePoorDate Pole Date User generatedAuto generatedTime Pole Time User generatedAuto generated6