Post Midterm

Question 1

What are the five types of attribute analysis?

Answer 1

Query
Arithmetic calculation
Statistics
Re(classification)
Relating tables

Question 2

What is arithmetic calculation in attribute analysis? Example?

Answer 2

Applying a formula to a numeric field, like using ha and volume to find vol/ha

Question 3

How do you use statistics in arcgis?

Answer 3

Employ the stats function in the attribute table, comes up with wnpop up twble. Or you can choose ‘summarize’ in which a data table is created

Question 4

What is reclassification in attribute analysis?

Answer 4

Like the fading colours spectrum. You generalize or simplify data and it is shown on the map through symbology.

Question 5

What are classifications in attribute analysis for colour schemes?

Answer 5

Natural break
Quantile
Equal interval
User defined
Std deviation

Question 6

In attribute analysis, what is relating tables?

Answer 6

Joins and links - attaches data to outside tables

Question 7

What are five types of overlay in spatial analysis?

Answer 7

Clip (cookie cutter, only data from destination goes through, no info besides shape from the other)
Intersect (like clip but all data us used and output is incidental space)
Union (everything is combined including map and source)
Update (add the new, like a new cutblock polygon on existing data)
Erase (get rid eof the old shit, overlay and replace)

Question 8

What can buffers be used for?

Answer 8

Single buffers for points
Multirings are good for rrz + rma
Variable widths

Question 9

How does buffering work?

Answer 9

It creates a new data layer
Creates polygons a certain distance away from selected features
Can buffer either the inside or outside of polygons
Can also apply dissolve to overlaps

Question 10

In spatial data analysis, what are types lf querys?

Answer 10

Slect by location…
Comparing to themes (compare outside source layer against target layer) .So you can:
Intersect(share common space)
Contain (feature inside a feature)
Distance of (find something within a buffer distance)

Question 11

What are types of spatial calculations to be done with spatial analysis?

Answer 11

Euclidian distance with the ruler function
Geometric distance, as in line length or perimeter
Geometric area (calc geometry in arcmap)
Calculations in stored data tables

Question 12

The two Types of querys and their components

Answer 12

Simple (field name, relational operator, value)

Complex (more than one simple query combined with boolean operators)