Linked Questions

4
votes
1answer
311 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 ...
3
votes
1answer
88 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/...
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 ...
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 ...
1
vote
1answer
881 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 ...
1
vote
1answer
958 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
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
473 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/...
0
votes
1answer
511 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
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?
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 ...
2
votes
0answers
833 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 ...
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 ...
1
vote
0answers
453 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 ...
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 ...

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