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

1
vote
1answer
81 views

OpenLayers 2, GeoJSON cant get coordinates to work

I'm trying to display some Polygons on a map, and I'm new to OpenLayers, maps and GeoJSON. First what work: vector1 = new OpenLayers.Layer.Vector("GeoJSON1", { projection : "EPSG:4326", ...
2
votes
1answer
53 views

Network generation algorithm

I am trying to solve a network generation problem, and I'd be happy about inputs. First of all, my problem description: I have a list of connections between locations with respective distances. For ...
0
votes
1answer
301 views

Transforming coordinates from WGS84 to Gauss-Krüger 5

GPS coordinates in the format of WGS84 are quite common. I need to transform them into Gauss-Krüger coordinates but I have no idea how to do that. The only things I know are that it is not easy and I ...
0
votes
0answers
129 views

CSV to Polygon.SHP with Python

I'm looking for a way to convert CSV file to polygons shapefile. I need to make polygons with defined size. In the CSV file, The first row is the length of each polygon and the first column is the ...
0
votes
2answers
385 views

How to extract all the polygon coordinates from a SpatialPolygonsDataframe?

I want to do something relatively simply but it seems to be very difficult to do, though I am very new to using R for spatial data so apologies if I've missed something obvious. I have a list ...
1
vote
4answers
541 views

Batch conversion of XY coordinates to latitude and longitude

I'm working on a school project. I have this dataset from Sacramento, California http://data.cityofsacramento.org/search/?q=police I want to convert the XY coordinates to latitude and longitude, in ...
1
vote
1answer
33 views

Get pixel geo info according projection and map extent

I would like to know if it is possible to calculate the geographic coordinates (lat, lon) for a pixel specified by its x/y (top-left) cartesian coordinates in a map image/raster? The datum and ...
0
votes
2answers
739 views

How to get the coordinates of the starting and ending points of a line in ol.interaction.Draw in OL3

I'm using Openlayers3 for drawing and storing lines, and then doing some processes on the inputs. Now I want to get the coordinates of the starting and ending points of the line while the line is ...
0
votes
1answer
62 views

Trying to find Coordinate System for Dubai?

I have a CSV file to convert .shp. The X,Y values are like X -40219075 Y 200946341 This is somewhere in Dubai area. Can any one tell me what will be the coordinate system they used for this?
2
votes
1answer
44 views

How to obtain coordinates from points with similar symbol in an image?

I would like to obtain a table containing all the coordinates of the triangles in the following image. I know it is possible to georeference my map using the georeferencing plugin and then I can ...
2
votes
2answers
37 views

Turning part UTM, part degree coordinate into location on Google Maps?

I'm really new at this and not actually sure what kind of coordinate this is but I need to know where this coordinate leads to. The cöordinates are part of a province wide "fox hunt" in gelderland, ...
0
votes
0answers
72 views

Plot ENU points on a map having an origin GPS Lat and Long

I have a GPS coordinate point to denote my origin: 8.6258,47.3325 Then I have a series of ENU (east, north up) points in meters that represent the distance from my origin: -10, -1 //East, north ...
1
vote
0answers
13 views

Increment GPS coordinates by a certain distance given in meters [duplicate]

Say I have this point: 45.1200,10.5000 From there I want to create another point that is 20 meters north and 10 meter east from the previous point. Is there any equation I can use for doing this?
0
votes
1answer
64 views

Can you correct calculate the coordinates of a position given time and distance [duplicate]

lets say i have a point on the map New York, NY, USA Latitude: 40.712784 | Longitude: -74.005941 If i move 10 metres north in 20 seconds ,can i use the coordinates i have to calculate the new ...
0
votes
0answers
37 views

Imported XY coordinates displayed on a grid

I am importing a large number of X,Y coordinates into arcMap from an Excel spreadsheet. These points represent animal locations so many of them are very close together. When I zoom in to look at a set ...
1
vote
1answer
365 views

Editing coordinates of some point features in ArcGIS 10.3

I am working on a point shapefile in ArcGIS 10.3, now I have to move some of the points to new locations based on another point shapefile, I have already tried it by using Editor/Edit vertices and ...
2
votes
1answer
38 views

How do Wikipedia maps add a coordinate point to a base map?

On wikipedia pages for localities, there is often a map on the right side of the page in the introduction, and the map is tagged with the point of the locality. For example, see below: ...
1
vote
0answers
36 views

Converting 3d images in meters to feet when exported to dxf

In QGIS 2.10, I am using the raster calculator to convert a metric elevated raster to feet and then create 2 foot contours (no problem). But when I dxf it out and put it in CAD, I can get the contours ...
1
vote
1answer
73 views

Which coordinate system does MapTiler use for its “Photoshop Overlay for Google Maps” page?

I am attempting to use this MapTiler webpage to create a background image that I can position my image over and then use GDAL to generate tiles. My process is: Position the map on the MapTiler page ...
0
votes
0answers
153 views

How to get GPS coordinates of neighborhood polygon from Google Maps?

Does anyone know how I can find the GPS coordinates for neighborhoods like this: ...
3
votes
1answer
519 views

Update a table with values from coordinates on GEOMETRY in Oracle

I have 2 columns in a table that represent the X and Y coordinates. The values in those columns don't match the actual coordinates and I want to update them with the coordinates values that are ...
1
vote
0answers
171 views

Getting random coordinates based on country

Are there any webserveices/APIs that can take a country name and return a random coordinates (not including the sea/ocean sections) inside that country?
0
votes
1answer
69 views

What file format is this? Can I get a bounding box out of it?

I am dealing with a PNG map that has an associated text file with this exact content. PROJCS["WGS 84 / UTM zone 32N",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS ...
1
vote
0answers
47 views

GPS point elevation vs Contours layer elevation

I have some survey grade GPS points whose elevation is approx 55 feet lower than my contours layer elevations. I am using 1 ft contours and comparing point elevations with contours in the same ...
2
votes
1answer
83 views

How to export a CSV with lat lon WKT from a layer which is not in WGS84?

I want to extract a csv with lat and lon coordinates so I select -- Geometry AS_WKT but when the csv is created I see this LINESTRING (277054.55782319931 198725.03588318737,277052.43701817648 ...
2
votes
1answer
64 views

What kind of coordinate system has values like 555,19 - 251,48?

I am trying to identify a coordinate system used to give positions to caves in France. The Emergence du Ressel is at 555,19 - 251,48 (decimal coordinates 44.56194, 1.77167) and Source de Landenouse ...
0
votes
1answer
159 views

Get every coordinate from an address database

I have a xls database of street addresses. I want to get the latitude/longitude coordinates for all of them. I know very little programming, but I can learn. What's the easiest way of doing this?
1
vote
0answers
126 views

ArcGIS/ ArcPy - XY coordinates of feature class does not match calculated geometry XY

Tested on: different workstations, different Windows versions; ArcGIS Desktop 10.3, different license levels Background: I use the Google Maps DistanceMatrix to calculate drive times between two ...
1
vote
2answers
432 views

How can I represent Time in GeoJSON?

I'm modelling a bus route as a series of waypoints. Most of these waypoints have just a latitude and a longitude and represent points along a road. However, when the bus gets to a bus stop, the ...
1
vote
1answer
110 views

Adjusting UTM and geographic coordinate data

I have a dataset with several points in space within a given area. UTM coordinates (easting, northing in m) or geographic coordinates were recorded for a single point in the vicinity of these points. ...
6
votes
1answer
235 views

Descrambling scrambled coordinates?

I've got a data set that comes with coordinates, however they seem to have gotten scrambled somewhere along the way of data-collection, data-entering and data-export. For some of the places the actual ...
0
votes
0answers
24 views

How to add coordinates to an image in QGIS? [duplicate]

I use QGIS 2.10. I have a map image without any coordinate or boundary info. I need to convert it to kml file and before this, I need to add specific coordinate info for this map. How can I add ...
0
votes
1answer
88 views

Points and polylines representation of coordinates in QGIS? [duplicate]

I am working on the "Jakarta Bay", Indonesia. I have a shapefile for the Indonesian coastline and I clipped my region of interest using an appropriate polygon. I also have points that are located ...
0
votes
1answer
88 views

How do I color XY coordinates with different colors in ArcGIS for Desktop?

I have added XY coordinates on map layers in ArcMap. These coordinates now show up as points. However, I want to be able to color each coordinate point a different color. Any tips/explanation?
1
vote
1answer
115 views

Postgis How to populate column with geography data from geometric data?

I stored my point date in geometry format with SRID 4326 supposed EWKB (data looks like this "0101000020E610000071F1A611E9392640AECD10D8E68C4A40") = way geometry(Point,4326) I want to have the ...
1
vote
1answer
129 views

How to calculate overlap area of two polygons?

I am a beginner in the world of GIS. I have one table polygons with each polygon having north-east and south-west coordinates. And for every polygon, I need to find area of overlap with other ...
2
votes
1answer
55 views

XY coordinates effecient way to copy

I get XY coordinates of point features delivered to me in PDF format, this means that to bring them into ArcGIS I manually have to enter them first into an excel spreadsheet - does anyone know if ...
0
votes
1answer
43 views

Arithmetics with Coordinates [duplicate]

I wonder if I can do simple arithmetics with coordinates. Can I do substraction of coordinates like 2.570801 (lng) 46.89023 (lat) / 17.424316 (lng) 55.15377 (lat)?! Or will that get messy without a ...
3
votes
2answers
208 views

Finding the pixel coordinates using GDAL/numpy

Is there a way to get the XY cordinates of a pixel based on the array index using numpy/gdal? I have a new set of extents for a raster and, based on these newer extents, want to determine the ...
6
votes
1answer
321 views

Find shortest path between points avoiding shapefile?

I am an intermediate python developer with very limited GIS experience. I have a list of latitude/longitudes of a ship at sea. I need to join them into a polyline using the shortest distance between ...
1
vote
0answers
61 views

Opening shapefile and Tiff layer Coordinates do not match up

I am new to using QGIS and am having a major problem. I have the UK Ordnance Survey (OS) 1:25000 raster layer in Tiff format open. When I open a shapefile or mapinfo vector layer on top of it the ...
0
votes
3answers
181 views

find border coordinates of brazilian states

I am looking for coordinates (longitude and latitude) of each state of Brazil. Where can I find that? I have found a file for the US states here: http://econym.org.uk/gmap/states.xml, I am now ...
0
votes
2answers
216 views

Add X,Y coordinates to a shapefile

I have x,y coordinates as excel file. How can I add them into ArcMap? Or - I have x,y coordinates of 2 points. How can I quickly find them AND add/draw them on the map in ArcMap?
0
votes
1answer
29 views

Find the most populous city within regular hexagon

I have a map of europe as hexagonal grid. For each hexagon I have center(lat and long) and constant size. Is there a way to determine the most populous city within each hexagon? It may not be ...
1
vote
0answers
19 views

NBI Coordinate Data Missing place-holding zeroes for DMS format

When working with National Bridge Inventory (NBI) coordinates I have found what appears to be an error in the raw data provided. I couldn't find any other mention of this specific error when ...
1
vote
2answers
909 views

Getting all vertex lat, long coordinates every 1 meter between two known points using PHP?

I am currently using php to try and write code that will take a start point and end point latitude and longitude coordinate pair in decimal degrees and calculate the latitude and longitude of every ...
7
votes
1answer
299 views

Coordinates of cities and villages in The Gambia/Senegal

I am looking for sources of geo-referenced data on villages and cities (or all other things there are) in The Gambia (and Senegal if available). One issue with geocoding in rural West Afrika is the ...
2
votes
0answers
113 views

GTA V coordinates to LatLng

I'm here because I'm trying to create a GTA V map with Leafletjs API. In deed, I've got my tiles that are ready. But the aim is to put markers on the map by using GTA V in-game coordinates. To achieve ...
1
vote
0answers
122 views

Schematic Map in GIS Tools?

The Question: Is there way to leverage GIS tools to author/edit a schematic map where elements' geometries has canvas-based coordinates rather than real-world coordinates on Earth? Perhaps to ...
0
votes
1answer
186 views

Problem doing a coordinate transform with GDAL python

I'm trying to do a concordant transform from the format of the shapefile (3309) to google maps(4326). This code works on one Centos 6.6 box with the SCL python 2.7 and a custom gdal 2.0 build. ...