Name:
Date:

1. How many pixels are found in each image?  How did you find out?  Why does each band have a different number of records in its attribute table?  What do the attributes "value" and "count" refer to?
 
 
 
 
 

2.  A) Which resampling method looks best for general display?  Which best shows you the original data and therefore is best for analysis purposes?  Use this resampling method for the rest of the lab.
 
 
 
 

B) Which bands are initially represented by which colors? What objects/features appear red, green, blue? Why? What objects appear black, white, gray (if any)? Why?
 
 
 
 
 

3.  Which color combination most closely resembles "natural" color (i.e., what you might expect to see in a color air-photo)?  Which combination highlights urban areas, roads, and soils well?  Which brings out vegetation?  For the latter combination, what are the colors of  golf courses, chaparral, dry grassland, and riparian vegetation, respectively?  What accounts for the differences between these vegetation types?
 
 
 
 
 

4.  A) Compare the resulting lagoon features.  What are the differences between them?  Account for the differences.
 
 
 
 
 

B) Does the 15-m resolution image contain mixed pixels?  Would you expect mixed pixels in the high-resolution DOQ?  Is it possible to have an image raster without it containing any mixed pixels?
 
 
 
 
 

5.  A) How do the two roads datasets compare? Which one has smoother lines? What are some sources for the differences between these two datasets? B) What other attributes might you want to add to your roads theme?
 
 
 
 
 

6.  A) Describe the decision-making process you used to determine land-use/land-cover boundaries. What qualities in the TM image helped you define the boundaries?
 
 
 
 

B) How could you quantify the accuracy of your land- cover classes or boundaries? How was error potentially introduced into your land cover theme?
 
 
 
 
 

7.  A) What extra elements in addition to the seven standard elements are listed in the LANDCOV metadata?
 
 
 
 
 

B) Briefly describe (1 sentence) the LANDCOV layer.
 
 
 
 
 

C) What is the MMU (minimum mapping unit?) for the dataset?
 
 
 
 
 

D) What was the main data source upon which the polygon boundaries were based?
 
 
 
 
 

E) What projection and spheroid are the data in?
 
 
 
 
 

8.  What are the main differences between the stylesheets?  Which do you prefer and why?