Lab 3; Projections & Data

1) You are using Over-the-fly projections because we added layers from ArcCatalog onto ArcMap with the information that goes onto the map in ArcMap to explain population growth. We also used General-Purpose projections because those are for areas with middle Latitudes, as we had east and west orientations

2) The datum that seemed more common were Horizontal Datums because even though the map wasn't on the actual globe, you can still if you added graticule lines will still be able to pin point each location because those lines never change as do the states or continents that pass through them.

3) Alaska is the largest state in area as their area for the whole state is, 663,267 sq mi.

4) Alaska appears to be the biggest because, it got projected to fit onto the main map showing all the states from the United States. Of course in reality, Alaska does have the biggest area but on the map it makes it look 2x as big than it really is. Texas looks big as well and it does imply that it is huge because it is shaded darker than alaska but that only means which cities have had the most expansion in their population.

5)Below

6) A lot of the cities that belonged to the actual state at first before we adjusted our map, looked completely out of place. Some of them where in the ocean, others in different states, it didn't look right. We had to fix it because, well of course, that's not their correct position, and secondly becauser the map was too large for the dots to aligned themselves correctly. They also looked like that before we brought the fast cities date over from ArcCatalog so when we pasted it onto ArcMap, it needed a little adjusting as we brought a layer over onto the map to correctly adjust which cities did have the correct location. It didn't recognize the layer when we added it onto ArcMap as it was unknown. We had to go deep into the system and pull it out and then after magnify the map to get correctly and actually display the correct states as well as position them correctly in the states they go into.