Linked Questions

146
votes
4answers
154k views

Difference between WGS84 and EPSG:4326?

What is the difference between WGS84 and EPSG 4326? It seems like for a given dataset it might be both WGS84 and EPSG:4326.
8
votes
1answer
9k views

Understanding the difference between coordinates projection in OSM and Google Maps in China

I'm looking at the coordinate differences between Google Maps and OSM. I'm a noob in the technicality behind GIS. Having read: EPSG 3857 or 4326 for GoogleMaps, OpenStreetMap and Leaflet How to ...
5
votes
4answers
9k views

In what coordinate system and unit measures the coordinates returned by the Google Maps API are?

In what coordinate system and unit measures the coordinates returned by the Google Maps API are? I ask this because I have a page that returns the geocode lat / long for me to find in my postgis ...
2
votes
2answers
14k views

What projection is being used to display in QGIS for Geographic Coordinates [duplicate]

Google/Bing Maps etc. or web mapping applications use WGS84 coordinates. When you moves the mouse on map, you see WGS84 latitude and longitude. Although coordinate system is WGS84, map is projected in ...
1
vote
3answers
851 views

Show google coordinates in leafLet with WMS Geoserver

I am new to GIS and have a problem with using geo-coordinates which I got from Google. I have some lat, lng data in my database(MSSQL) which I obtained from Google API (I think it should be in 3857 ...
5
votes
1answer
1k views

Importing google maps/bing points: which projection?

I am trying to use data imported through one of the google maps/Bing API, and am confused about the projection. Using the APIs, data comes under a non-geographic format, such as json or xml, try: ...
4
votes
2answers
454 views

ArcMap Exported (KML/KMZ) Meridians and Parallels do not match/ align with that of Google Earth

I was trying to draw kml that are (one degree in gap) meredians and parallels for Austrailia. e.g see i tried to draw 142 degree and 11 degree lines using fishnet in arcmap but when imported into ...
1
vote
1answer
961 views

Projections leaflet and OSM

I downloaded data from OSM and extract lat/lng coordinates from a user who is clicking on a leaflet map. So my program returns the coordinates where a user clicked! I am wondering what crs I need to ...
-1
votes
3answers
784 views

Finding the right CRS for Google Map coordinates

I'm trying to find the right CRS for a spreadsheet dataset I'm trying to add to my QGIS project. I collected coordinates for wildfire fuels reduction projects using Google Maps, and am hoping to add ...
4
votes
2answers
546 views

Problem with distance in QGIS

I start a new project with base on OpenLayers plugin but if I check the distance on QGIS with distance tool (I choose a straight road) I view 5.466m on QGIS and 4.300m on google (by walking). How is ...
4
votes
1answer
314 views

Buffer polyline to kilometres in custom projection in QGIS, Python, R

I have a map containing polyline squiggles all over the world (shown below). I need to buffer these lines by 50 km either side, resulting in polygons. I have reprojected my data to this custom ...
1
vote
2answers
943 views

Scalebar gives error in measurement in Qgis: Different measurements of distance on OSM tiles and GoogleEarth

I've created a map of Bordeaux using the QGIS map compositor by following this procedure: Used the OSM plugin to display an OSM map and zoomed to Bordeaux Used the print composer to create a map of ...
1
vote
1answer
889 views

WGS 1984 Geographic Coordinate System, Version 2 vs WGS 1984 Web Mercator (Auxiliary Sphere)

I'm fairly new to GIS, and wondering if someone can tell me if there is a difference between WGS 1984 Geographic Coordinate System, Version 2 and WGS 1984 Web Mercator (Auxiliary Sphere)? Are they ...
2
votes
0answers
834 views

Vector points from CSV file wrong location in QGIS

I am using QGIS 1.8 (I know old version), and uploaded a CSV file with coordinates. The underlying base map is from Google, using the OpenLayers plugin. This base map uses WGS84-EPSG:3857, and my ...
0
votes
1answer
482 views

Coordinate mismatch between Google Maps and Leaflet Using ESRI World Imagery

I mark a point on Google maps and get lat, lon values. When I put those values in my code which uses Vue2leaflet and ESRI World Imagery tiles from https://server.arcgisonline.com/ArcGIS/rest/services/...
1
vote
0answers
749 views

Buffering a polyline

I'm attemping to buffer a polyline that the user has drawn on a map (Google maps and OSM map). The user specifies a distance in metres and a polygon should be drawn around the polyline representing ...
0
votes
1answer
513 views

XYZ FILES can't process Using Potree

I try to process XYZ Files In Potree but it not works But when i try .las file it work prefectly fine My commands line arguments ./PotreeConverter.exe C:/wamp64/www/PotreeConverter2/PotreeConverter_1....
0
votes
1answer
216 views

Fitting polylines to their true position using ArcGIS Desktop?

I have a satellite image and CAD data of the same area. The polylines from CAD to not overlay correctly on the satellite image. I want to fix polylines to their true coordinates but I could not fix ...
1
vote
0answers
454 views

Maps in Google Earth and QGIS do not match?

So I am plotting a path of vehicle in the water and the map in Google Earth and QGIS dont line up (atleast with either the NetCDF or the CSV file). In QGIS everything is in WSG 84 EPSG 4326 Is there ...
2
votes
1answer
258 views

Need assistance setting center coordinate with GDALWARP

I'm having some issues converting my project into an MBTiles format. I'm trying to use gdalwarp to convert my main file to geotiff format, but I can't seem to get the center coordinate to how it is ...
2
votes
1answer
184 views

Getting village map into correct place on OpenStreetMap raster background?

Can anyone tell me the steps to display my village map (as a tif/tfw pair of files) over an OSM raster layer (from the OpenLayers plugin) in QGIS? Because every time I try my village ends up in the ...
1
vote
1answer
153 views

Leaflet CRS and PostGis

From the Leaflet.js documentation it states that it uses a default CRS of 3857. This implies that if I am going to generate points with PostGIS based on polygons, or points created by drawing or ...
0
votes
1answer
80 views

Getting LonLat of a specific location in a specific projection on osm / google maps?

How can I get the coordinates in, for example EPSG:4326 of a specific location, in either OpenStreetMaps or Google Maps?
1
vote
0answers
147 views

Converting aeronautical information coordinates to Google Maps API coordinates

I'm in the process of creating a webpage to ease the process of visualizing NOTAM navigation warnings. Never done any geospatial software development before, so all the terms like geoid, reference ...
3
votes
1answer
89 views

Match polygons of two independently created shapefiles to create dataframe

I have two independently created shapefiles A) shapefile 1 lists the german postal codes and can be downloaded from https://blog.oraylis.de/2010/05/german-map-spatial-data-for-plz-postal-code-regions/...