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To format your coordinates so they work in Google Maps, use decimal degrees in the following format: Correct: 41.40338, 2.17403; Incorrect: 41,40338, 2,17403; Tips: List your latitude coordinates before longitude coordinates. Check that the first number in your latitude coordinate is between -90 and 90.
To format your coordinates so that they work in Google Maps, use decimal degrees in the following format: Correct: 41.40338, 2.17403; Incorrect: 41,40338, 2,17403; Tips. List latitude coordinates before longitude coordinates. Check that the first number in your latitude coordinate is between -90 and 90.
To find an exact location, you can use the coordinates on the map grid: In the upper menu bar, click View Grid. Ctrl + n (Windows) or ⌘+ L (Mac). The grid lines are marked with general coordinates. Exact longitude and latitude readings are in the lower right corner.
Then the nominal precision of a longitude measurement at a given latitude is just determined by moving the decimal point; for example, at 40 degrees N, one degree of longitude is about 85 km and the precision of the first decimal at latitude 40 N therefore has a nominal precision of about 8.5 km.
One last thing not mentioned: all coordinates are not created equal! We've seen some very popular databases off by over 20 miles in the congested Northeast! Ask vendors to give you a sample of data in your area (not their standard demo file) and use a free product such as ArcGIS Explorer to verify (you can download a ZIP Code boundaries layer ...
The method I've used for this type of thing is to convert the longitude/latitude coordinates to 3d cartesian coordinates (x,y,z). Average these (to give a cartesian vector), and then convert back again. Note that you probably do not need to normalize the vector, so the actual average process could be a simple sum.
The original spec had longitude,latitude order. This is more of a software-oriented view as it matches up with [US-centric] x,y order. This doesn't match the ISO standard, so various later specs have changed the order to latitude,longitude. This order should be used when displaying or transmitting the values, they don't have to be stored that way.
You can replace EPSG:4326 by the EPSG-Code of the CRS you wish to display coordinates in. EPSG:4326 is the code for WGS 84, so it will return latitude and longitude. If you prefer the result to be a string value in degree, minutes and seconds instead of decimal degrees , you can add the to_dms() function as follows:
Pour rechercher un lieu, saisissez les coordonnées GPS de latitude et de longitude sur Google Maps. Vous pouvez également obtenir les coordonnées des lieux que vous avez déjà trouvés. En plus de la longitude et la latitude, vous pouvez utiliser des Plus Codes pour partager un lieu sans l'adresse.
Any decent world map will likely have latitude and longitude markings, there's a reference. There are occasions when working over the international date line a 0-360 system is used but most common 0 longitude is around Greenwich and ranges -180 to 180. Latitude systems don't vary AFAIK, they're -90 to 90.