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GEOG 287 MidTerm Quiz

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1. Name, explain and give an example of Focal functions




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2. Name, explain and give an example of Local functions




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3. What are the four basic reasons used to define a buffer distance? (I.E. what drives you to establish a buffer distance of 50?) Describe them.




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4. How is slope implemented in a raster data model?




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5. What is intervisibility analysis?




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6. When measuring the distance between two features one could use “Functional distance” Explain what that means. Give examples.




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7. When measuring the distance between two features one could use “simple distance” Explain what that means. Give Examples.




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8. Why is it important to be able to isolate, identify, count and separately tabulate and display individual items?




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9. How does one calculate a viewshed in raster?




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10. What are the differences between a Bar Chart and a Histogram?




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11. *Evaluates value Per zone. All output cells get the same value. *An example is Zonal Area




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12. LOS for fire watch tower, location of cell tower




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13. * Range = Highest – lowest value. Shows the spread of the values * Standard deviation = the average difference between frequencies




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14. Absolute values within a dataset




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15. Apply algorithmic functions to recalculate cell values based on type filter applied.




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16. Output of what you can see in intervisibility analysis




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17. *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)




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18. Using TIN- Triangular irregular networks (TIN) functions




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19. *Point-zero, none *Line-one, length *Poly- two, length and width




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20. Relative Frequency is the percentage of the values





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