World map help please?
(Posted by: Hello on 2012-04-15 09:08:59)
For a project in one of my classes, I have to draw a map of the world, and one of the features that I need to include is the international dateline. However, the projection that I have to use is an equirectangular map. http:/ / upload.wikimedia.org/ wikipedia/ commons/ 8/ 83/ Tissot_indicatrix_world_map_equirectangular_proj.svg Whenever I have tried googling for the dateline, the only results that come up are for the circular world maps or a Mercator projection. Can someone please help me find a map with the right projection that also includes the dateline? Also, I have tried googling an equirectangular map that has the location of the Ross Sea and Ross Ice shelf, but the only maps that come up are circular maps. If you can 't find either one, can anyone please draw the location of the items and upload it? Thank you! I don 't have any mathematical equations for any map. I 'm not quite sure how that would be done. By the way, the purpose of the map project is just for us to see how big the world is. No joke. It 's just for world history.
If you already have the equirectangular map, then find the two features you need on a mercator projection and transfer their location to the new projection. This may require you to use the mathematical transformation that produced the equi map but that may be the intention of the exercise. Maybe I should have looked at the wiki site first. The international date line follows approximately the 180th degree of longitude with a few bumps for islands. Just transfer this from the map I suggested. The same definitely applies or Ross Sea and Ice shelf.