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How do you find the coordinates of a XY location?
Select the XY Coordinates from the Select Locator field on the ArcFM Solution Locator Tool. Enter X and Y coordinates of feature you want to find OR use the pointer tool to select a location on the map and automatically populate the X and Y coordinates fields. Enter a search distance (in map units).
How do you calculate latitudes?
Use the sight line on the top of the aiming beam to align the beam with the North Star. Use the protractor to measure the angle between the beam and the horizon (which is 90º to the plumb line). This angle is your latitude.
How is longitude and latitude measured?
Both longitude and latitude are angles measured with the center of the earth as an origin. A longitude is an angle from the prime merdian, measured to the east (longitudes to the west are negative). Latitudes measure an angle up from the equator (latitudes to the south are negative).
Where does latitude show in Mercator map projection?
However when I try a different latitude value ex: 58.07 (just north of the UK) it displays as north of Spain. The Mercator map projection is a special limiting case of the Lambert Conic Conformal map projection with the equator as the single standard parallel.
Do you need a Mercator projection for Google Earth?
You need a map which is a mercator projection and you need to know the lat / lon positions of your map. You get great customized mercator maps with perfect matching lat / lon positions from TileMill which is a free software from MapBox! I’m using this script and tested it with some google earth positions. It worked perfect on a pixel level.
What kind of Mercator projection does JavaScript use?
I know the question was asked a while ago, but the Proj4JS library is ideal for transforming between different map projections in JavaScript. UK maps tend to use the OSGB’s National Grid which is based on a Transverse Mercator projection. Ie. like a conventional Mercator but turned 90 degrees, so that the “equator” becomes a meridian.
How to plot longitude and latitude in JavaScript?
I have successfully managed to get a latitude and longitude and plot it onto this map by taking the leftmost longitude and rightmost longitude of the UK and using them to work out where to put the point on the map. This is the code (for use in Processing.js but could be used as js or anything):