Projections, Coordinates, and Graticules

 

Open Vector Map.  Open a Lambert conformal map of CONUS, the continental United States.  This uses the "standard setting" for the lower 48 states.

Note that as you move, you will see the lat/long coordinates, and the projected x and y coordinates at the bottom of the screen.  You should be able to see if there is a false easting or false northing, because if there where there should be no negative coordinates.  Otherwise the coordinates start from a designated location which will be 0,0.

Grid/graticule lets you overlay the projection's native grid.  You can label it.  Note that the native grid is parallel with the map edges; this is what the GIS program uses to plot on the map.

Database and overlay (if you have correctly copied the data files, you can do this on the Cartography menu, Map projection zones submenu; otherwise you must find the files)


Open Vector Map.  Open Lambert conformal maps of Morocco, with zones 1 and 2 (and 3 and 4 if you want more work)

Grid/graticule lets you overlay the projection's native grid.  You can label it.  Note that the native grid is parallel with the map edges; this is what the GIS program uses to plot on the map.  Are the numerical coordianates the same for the two zones?

Database and overlay the UTM zones  (if you have correctly copied the data files, you can do this on the Cartography menu, Map projection zones submenu; otherwise you must find the files). 

 

 


Last revision 11/18/2017