بنت راشد
01-Apr-2007, 03:53 AM
حد يفازعني ويحله ويايه..
Question …: 10 Marks
1. Convert the following map into raster map using a 100×100 meters grid.
Use 0 for water, 1 for trees, and 2 for sand
2. What is the minimum number of bits that can be used to express each cell?
3. What would be the size of the map in bits?
Question …: 10 Marks
1. Given the following raster map where the dimensions of each cell are 30×30 meters, what are the UTM coordinates values for the lower right corner if the UTMs for the Upper left corner are Northings = 5,000000 meters, Easting = 400,000 meters.
A A A A B B C C C C
A A A A B B C C C C
A A A A B B C C C C
B B B B B B + C C C C
C C C C C C C C C C
C C C C C C C C C C
NORTH
2. What are the UTMs coordinates for the point (+) on the map?
3. If the point (+) is not exactly at the centre of the correspondent grid, what would be the possible error value for UTM coordinates in terms of distance?
Question …: 10 Marks
1. The following three layers of raster data cover an area of 10 km by 10 km of an urban area. The resolution of each cell is 1 km and columns are aligned north-south. The task is to identify and rate areas of possible future development given the following criteria:
- you can not build on a water body, mountain, or existing urban area.
- areas adjacent to existing industrial sites are weighted relative to their closeness to these sites. For example; an area which is adjacent to an existing industrial sight within 1 km is weighted twice as an area within 2 km and three times as an area within 3 km. After three kms, the industrial site has no weight.
- areas that are designed as possible future industrial sights carry half the weight compared to existing industrial sight.
- only areas adjacent to urban sites within 1 km carry one weight similar to that given to existing industrial sites (note: you have to use the highest weight given to areas adjacent to existing urban sights)
The end results should include a raster map with rating system where:
0 = no choice
1 = best choice
2 = next best
3 = ..
Draw a flow chart which shows your proposed solution.
Layer 1: L = Lake, M = mountain areas, U = existing urban area
L L L M M M
L L L M M M
L U M M M
U U U U U U M M M
U U M M M
U U M M M
U U M M M
U U M M M
M M M M
M M M M M
Layer 2: I = existing industrial sights
I
I
I
I
I
I I
Layer 3: P = already proposed industrial sights
P
P
P
P
Note: you can get extra points to do this on ERDAS!
Question …: 10 Marks
1. Convert the following map into raster map using a 100×100 meters grid.
Use 0 for water, 1 for trees, and 2 for sand
2. What is the minimum number of bits that can be used to express each cell?
3. What would be the size of the map in bits?
Question …: 10 Marks
1. Given the following raster map where the dimensions of each cell are 30×30 meters, what are the UTM coordinates values for the lower right corner if the UTMs for the Upper left corner are Northings = 5,000000 meters, Easting = 400,000 meters.
A A A A B B C C C C
A A A A B B C C C C
A A A A B B C C C C
B B B B B B + C C C C
C C C C C C C C C C
C C C C C C C C C C
NORTH
2. What are the UTMs coordinates for the point (+) on the map?
3. If the point (+) is not exactly at the centre of the correspondent grid, what would be the possible error value for UTM coordinates in terms of distance?
Question …: 10 Marks
1. The following three layers of raster data cover an area of 10 km by 10 km of an urban area. The resolution of each cell is 1 km and columns are aligned north-south. The task is to identify and rate areas of possible future development given the following criteria:
- you can not build on a water body, mountain, or existing urban area.
- areas adjacent to existing industrial sites are weighted relative to their closeness to these sites. For example; an area which is adjacent to an existing industrial sight within 1 km is weighted twice as an area within 2 km and three times as an area within 3 km. After three kms, the industrial site has no weight.
- areas that are designed as possible future industrial sights carry half the weight compared to existing industrial sight.
- only areas adjacent to urban sites within 1 km carry one weight similar to that given to existing industrial sites (note: you have to use the highest weight given to areas adjacent to existing urban sights)
The end results should include a raster map with rating system where:
0 = no choice
1 = best choice
2 = next best
3 = ..
Draw a flow chart which shows your proposed solution.
Layer 1: L = Lake, M = mountain areas, U = existing urban area
L L L M M M
L L L M M M
L U M M M
U U U U U U M M M
U U M M M
U U M M M
U U M M M
U U M M M
M M M M
M M M M M
Layer 2: I = existing industrial sights
I
I
I
I
I
I I
Layer 3: P = already proposed industrial sights
P
P
P
P
Note: you can get extra points to do this on ERDAS!