Tag Info

New answers tagged

4

The point at (0°, 0°) is not generally given a name All geographers, cartographers and surveyors ought to know the following, but I reference some sources anyway: According to Matt Rosenberg The point at which the equator (0° latitude) and the prime meridian (0° longitude) intersect has no real significance but it is in the Gulf of Guinea in the ...


4

Yes, you still reference coordinates (0, 0) as the origin in respect to the coordinate system as a whole. In essence, coordinate systems are grids in themselves. Therefore, terminology between the two are shared. See how ArcGIS refers to the "Grid" location as the origin.


5

It's "there where all the data shows up when something goes wrong". At least that's how I call it, or how I often detect when something went wrong. Others would call it Null Island, which is often used in a humorous way. For an occasional good laugh I would recommend some of the Null Island accounts on Twitter, such as Null Island Gang, Maptime Null Island, ...


1

To load in your own data use the gpx file support: Go to Map screen. Tap device menu button. Tap "Map Layers" Check "GPX track". A list of tracks will appear, named with the track starting date and time. Check the desired track to view. Tap OK. You will return to the map screen and zoom to the start of the track. source: ...


3

You should check out Geonames. Get one of the country files which has different files on different themes.


-1

Another approach with R library(raster) r <- raster('dem.tif') lon <- init(r, 'x', filename='lon.tif') lat <- init(r, 'y', filename='lat.tif')


0

I know that you have ArcGis but one easier way for getting latitude and longitude raster from DEM is by using R language (with rgdal library). library(rgdal) tiz<-readGDAL('tiznados_canoa.tif') #loading my DEM coor<-coordinates(tiz) #extracting x,y coordinates long<-coor[,1] #extracting longitude lat<-coor[,2] #extracting latitude ...


0

The basis for the PostGIS geographic type is a sphere. The basis for the PostGIS geometry type is a plane. (same link) Thus, when you run ST_Buffer on a EPSG:4326 geometry, the output is given in degrees of lat/lon. On the other hand, when you do the same for EPSG:4326 geography, you get result in meters. What you can do (besides using geography type) is ...



Top 50 recent answers are included