1: Frame the Question: Start by figuring out the information that is needed. How will this information be used and who will use it.
2. Understand your data: Type of data you are working with and what new information will need to be gathered or created.
3. Choose a method: Some methods might be quicker with more approximated information while other will take longer but have more detail.
4. Process Data: Perform steps in GIS.
5. Look at results: Is the information valid and useful, will it help others easily see the information.
Types of Features:
Discrete: Location can be pinpointed to show whether the feature exists or not.
continuous Phenomena: Blanket the entire map to show data with no gaps.
Summarized by area: counts or density within a boundary.
Models of the world:
Vector: Each feature in a row of a table and featured shapes are defined by x,y.
Raster: Features are represented as a matrix of cells in continuous space.
Types of attribute values:
categories: a group of similar things.
Rank: Put features in order from high to low.
Counts and amounts: Show total numbers.
Ratios: Show relationship between two quantities, and are created by dividing one quantity by another.