Name, explain and give an example of Block functions
*Aggregates neighborhoods to evaluate a value as a block. Blocks don't overlap, value in block computed and written to all cells of the block.
* Example Block Statistics-Mean (finds the mean of each neighborhood)
What is the purpose of Euler numbers?
To measure the degree of fragmentation as the amount of perforation
What are three different measurements you could make on a line feature?
*Sinuosity
*Length
*Orientation
What factors influence a feature having a particular Euler number?
Number of Holes and Fragments
Give two examples of higher-level objects for each of the following feature classes:
Points,
Lines,
Polygons
*Points- Centroid, Node
*Lines- Edge, Borders, Networks
*Polygons- Regions (multi-part), Island
Why is it important to be able to isolate, identify, count and separately tabulate and display individual items?
First Steps in order to perform analysis
What are some similarities and differences from simple and functional distance?
*Similarities: Both try to determine a distance between two points.
*Differences: Euclidian simple straight line regardless of barriers or impedance. Functional determines the best path best on cost inputs.
How is slope implemented in a raster data model?
Using a Filter, roving window of the neighborhood.
What are the differences between a Bar Chart and a Histogram?
Bar charts represent Qualitative categories not contiguous (touching bars)
Histogram represents Quantitative Continuous Numeric values of a single category (Bars must touch)
What is the main difference between an isotropic and an anisotropic surface?
Direction. We use Isotropic (example walking up and down a hill, use same cost value)
