Any of a set of two or more numbers used to determine the position of a point, line, curve, or plane in a space of a given dimension with respect to a system of lines or other fixed references.

learn more… | top users | synonyms

0
votes
0answers
760 views

Unable to dynamically locate map boundary coordinates in OSM/Leaflet

I have been trying for the past hour to take the coordinates of the map edge in a OSM/leaflet application I am making. While I can get the coordinates of the center, and I can get the coordinates of ...
0
votes
0answers
71 views

How to transfer absolute node position to latitude and longitude? [duplicate]

I am new to gis and also a newbie using QGIS. I have got a Layer with one shape. I extracted the nodes from the shape. Now I have got the absolute X and Y value of my Layer in the attribute table. ...
0
votes
1answer
971 views

Wrong coordinates in data when projecting in world map (qgis) [duplicate]

Possible Duplicate: How to find the proper coordinate reference system with two sets of data using different measurements or too convert one system into another I'm fairly new to the GIS ...
0
votes
0answers
168 views

How to get x and y coordinate values of an annotational featureclass

I am able to get the x and y coordinate values from point, polyline, polygon and multipoint type featureclasses. However, I am unable to export x and y coordinate values of an annotational ...
0
votes
0answers
22 views

World country borders in polygon geometry format [duplicate]

Possible Duplicate: Where do I get territories data? Is there some source I can get all world countries polygon geometry points with latitude and longitude? I find it for USA states but ...
0
votes
0answers
169 views

MapFish Print latitude, longitude innacuracy?

I'm new to GIS so this may be trivial: I'm using MapFish Print to create some PNG. I have issues to place the viewport. When I use a random GPS coordinate: -20.904522,55.475106 which seem to point ...
0
votes
0answers
48 views

How we add XY coordinates (in the attribut table) from shapefile (points) using QGIS? [duplicate]

Possible Duplicate: How to get the coordinates in Lat/long from a point layer? I created a new shape file and edited to add points at specific location. Now, I would like to extract the XY ...
0
votes
0answers
37 views

Calculating ECEF X, Y, and Z velocities between 2 points on Earth [duplicate]

Possible Duplicate: How do I calculate ECEF X,Y,Z velocities for GPS if I have no satellites This is my third attempt at explaining what I'm trying to do. If I have two ECEF X, Y, Z ...
-1
votes
1answer
33 views

Buffering algorithm [closed]

Does anyone know the algorithm of buffering? I had difficulty in drawing buffers. So I tried many values to acquire 1km buffer. I found value 0.008966 produces 1km buffer. Then I calculated inverse ...
-1
votes
2answers
872 views

Convert geometry to latitude-longitude using PostGIS ST_Transform

My table has a geometric field, in EPSG:3857, of type point. I need the latitude and longitude, in EPSG: 4326, of each point. Could someone give me a valid example of how to use ST_Transform().
-2
votes
1answer
48 views

How do I get the Coordinates of a shapefile into .csv [closed]

I have followed all the instructions on this site, but my output always shows Area, and Perimeter of each polygon. Am I missing something? Should I be changing a setting somewhere to select ...