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.

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2
votes
1answer
106 views

Coordinate system doesn't contain values in the range -180 to 180 and -90 to 90

I'm creating an android version of a PC program (I've contacted the company who owns the PC program, so it's legal). The program is in the core a GPS, but is used to navigate pre-defined routes for ...
0
votes
1answer
37 views

Trying to convert coordinates for use in ArcGIS

I'm trying to input this data into ArcGIS and plot coordinates like this: 00⁰06.743 031⁰36.970 (coordinates south / coordinates east) but I've failed so far and I was wondering if someone could ...
1
vote
1answer
41 views

WKID matching EPSG

Is there a way to matching the code of ESRI WKID with EPSG code? I'm trying to find the coordinate system of PCS Name = CGRS_1993_LTM. Which has WKID:102319 code. But I donn't know the EPSG code.
-1
votes
1answer
60 views

Single point in R

My question might be very simple. I want to create a single point (with xy coordinates) in a specific region, in a specific position. I don't want to do that with qgis I want to do that in R. Is there ...
5
votes
1answer
238 views

Convert from WGS84 to Google Mercator

I want to convert longitude and latitude coordinates from WSG84 to Google Mercator. The following code-samples show my coordinates in a KML/KMZ file and where I need the coordinates in the javascript ...
3
votes
1answer
24 views

Do I need to transform wind vectors when changing projection from EPSG4326 to EPSG24373?

I have a set of points and polygons given in "normal" lat/lon coordinates EPSG4326, which I need to transform to EPSG24373. I can do this without problem using PROJ4. However, I also have wind ...
2
votes
2answers
75 views

How to get cell value along Flow Direction

I have: a flow direction raster where I took off (assigned NoData value) the cells that overlayed the river network (from flow accumulation). a perfectly overlapping raster where I asigned a ...
1
vote
1answer
45 views

Can layers with different extents in arcmap 10 be made to line up?

I am currently trying to get some insect sampling coordinates that are represented by points to project on top of a polygon that shows all the different plots of land in a ranch. The coordinates for ...
0
votes
0answers
15 views

Convert IP addresses to street addresses or latitude, longitude coordinates? [duplicate]

Would it be possible to convert IP addresses to latitude-longitude coordinates or street addresses which then can be geocoded? or at least find the approximate location?
2
votes
0answers
63 views

Calculating lat/long coordinates from DLS (Dominion Land Survey) Location

I am trying to calculate the legal subdivision center of a DLS location and even when I try the simplest calculation my numbers are always off from other calculators. Take for example DLS location ...
0
votes
1answer
339 views

Link Google Earth with QGis

I was wondering if it was possible to link Google Earth files (KML, KMZ) to a QGIS project. The main idea would be that if you'd add a point with coordinates in Google Earth, this point would be added ...
2
votes
1answer
67 views

Populate X and Y fields in SDE Point Data Using SQL trigger

Here is my situation. I am running ESRI ArcGIS Server and Desktop 10.2 on SQL Server 2008 R2. I would like to populate the Latitude and Longitude fields from point data (Signs data collected using ...
0
votes
0answers
37 views

Calculate coordinates with better precision in ArcGIS for Desktop?

I'm using the geometry calculator to get the geographic coordinates of a point shapefile. However when I run it, it calculates the coordinates with 4 decimal points, regardless I've chosen double an ...
1
vote
1answer
93 views

How to transform data from a custom projection in JTS?

I have some data in NAD_1983_StatePlane_Texas_Central_FIPS_4203_Feet I wish to programmatically transform the coordinates to Lat long in WGS84 datum using JTS. I know that JTS can transform the ...
1
vote
2answers
97 views

Extracting/Exporting coordinates from polygons (shape) to text?

Is there any well working way to extract the X and Y coordinates of a polygon from shapefile to some sort of text (preferably csv)? The whole process should be somehow done automated through a ...
0
votes
1answer
38 views

Distance between coordinates

I placed some cones on a sports playing field and estimated their locations using latitude/longitude coordinates. An example pair of estimated latitude/longitude coordinates is 54.96975, -1.51407. On ...
0
votes
0answers
82 views

How to create function that gives google maps getBounds result?

I'm trying to create function that would calculate four bounding coordinates by latLng, zoom level, width and height in pixels, the same like in google maps getBounds function, in goal I won't create ...
0
votes
1answer
89 views

Improving accuracy of mercator meters conversion to lat/lon

My question is an extention to a previous post I had here a couple of weeks ago (converting-mercator-meters-without-utm-zone). While the answer in the previous topic got me so far, I've now come to ...
0
votes
1answer
36 views

Converting osm_id to OSGB coordinates

I've downloaded from http://extract.bbbike.org/ a map of the waterways and waterbodies within Greater London, Uk. I've loaded the shapefile into QGIS and opened its attribute table. I see that the ...
3
votes
1answer
42 views

From LiDAR .txt to QGIS map

I have Lidar data in .txt files (1000 to 26000 KB), where 2nd column marks x-coordinates, 3rd col y and 4th col z. 8 485000.16 6508997.48 1.84 66 Last 2 485001.27 6508998.92 1.86 82 Last 2 485001.02 ...
2
votes
1answer
2k views

Convert X Y Pixels to Easting Northing

I'm trying to find out what the formula would be to convert the X, Y of an image to the Easting and Northing coordinates. I've downloaded some of the raster maps from OS UK web site and I'm looking ...
0
votes
1answer
36 views

Converting SWEREF99TM coordinates to the “standard” coordinate system (longitude and latitude)

I recently asked a question about a coordinate system in a file, and found out that it used SWEREF99TM, but I can't figure out how to convert those coordinates to the "geographic coordinate system". ...
2
votes
1answer
328 views

How to flip X and Y coordinates of a grid by GDAL

I have a grid, which has flipped X and Y coordinates (X is represented by Y values and Y is represented by X values). This results in grid being positioned in completely wrong place. How can I flip ...
0
votes
2answers
1k views

How to extract elevation data from binary .ADF elevation format at given coordinates?

I have a high resolution digital elevation model available. The ground resolution is 1 meter and the file format is adf which is some binary ESRI grid raster format. I have a script the outputs x/y- ...
1
vote
2answers
1k views

Changing layer extent to decimal degrees?

Using ArcMap or ArcGIS 10 ... In the photo below, you can see my extent is in meters while my projected coordinate system is in decimal degrees. How can I convert my layer extent to decimal degrees? ...
13
votes
5answers
13k views

How to generate random locations nearby my location?

I am trying to create random locations nearby my location. What i want is to create random latitude/longitude pairs inside a 200 meters circle surrounding my location. This is the formula i came up ...
1
vote
1answer
83 views

How to get coordinates by click on map and send coordinate to MySQL?

I'm building my own web map. Now I want to get the coordinates by click on the map and send the coordinates to MySQL. I tried OpenLayers to get the coordinates from Openstreetmap,but I didn't know ...
1
vote
2answers
44 views

Is there a way to export coodinates from a feature class which has no X/Y column?

I have shape feature class of a province in France. The Geometry type is polygon. The feature class has columns which describe elevation, landuse, slope and so on. But it does not contain X and Y ...
1
vote
0answers
33 views

Max length for WKT name

First of all, sorry if this is obvious or stupid questions. I am not very familiar with geographic information system. My question is, is there max length limitation on WKT name? see the bold text ...
1
vote
0answers
21 views

How to make input data matrix in flowmapper

I have problem with using flowmapper. I'm confused, how do I enter a text record? Can you give me an example of an appropriate text file? I've been doing interpolation and made a contour of the ground ...
2
votes
1answer
290 views

Why is field calculator returning NULL for $x and $y in line and polygon layers?

I am trying to include XY coordinates in the attribute tables of several of my vector files; they are line and polygon files. I have tried two methods; first I used $x and $y in the field calculator ...
1
vote
0answers
26 views

Geo referencing RADARSAT-1 image

I have lots of RADARSAT-1 file in GeoTiff format along with meta data where corner coordinates are available. Corner coordinates are for image portion(except the black portion). But, radar image has ...
3
votes
2answers
3k views

Change OpenLayers 3 view center

I'm using OpenLayers 3 to interact with some maps. I first declare my map: map = new ol.Map({ target: 'map', layers: [ new ol.layer.Tile({ ...
0
votes
1answer
61 views

Transform lat,lng into x,y

I have coordinate system with x and y. Also I need to show there x,y point but I have coordinates latitude, longitude. How I can trasform latitude, logitude into x,y to show on x,y scale?
3
votes
1answer
51 views

Is there a method to tell which hemisphere a point belongs to, in WGS84 geoid, where the equator is an arbitrary ellipsis?

I use the WGS84 geoid (because I'm working with a GPS chip). I define an ellipsis that splits the surface in two parts, lets name these 'A' and 'B'. This ellipsis is defined by two points 'a' and ...
2
votes
1answer
2k views

Is it possible to place a point at a coordinate in QGIS?

Is it possible to place a point at a coordinate in qgis? I have a map, using irish grid reference and wish to place a point at an exact 6 digit coordinate. Is it possible to do it. Previous to this ...
1
vote
1answer
89 views

What is proper succession of coordinates while specifying TopLeftCorner in TileMatrix in WMTS?

While exploring various WMTS services, I've observed that sometimes x, y pair displayed in TopLeftCorner tag of TileMatrix tags defined in TileMatrixSet have succession changed to y, x. There are at ...
3
votes
1answer
80 views

PostGIS strange difference in distance calc from different point defenitions

I have a working POSTGIS database, loaded Dutch CBS data using shp2pgsql and now I want to map lat,lon coordinates to multipolygons. All examples I see use lon lat coordinates but if I do so I get ...
3
votes
1answer
3k views

How to manually edit point coordinates in QGIS?

Is there a tool for shapefiles or a QGIS plugin available, which will enable me to edit the coords of a point manually ? ("tool" -f1 "Tsunami Gauge"-move x1.abcdef -to x2.ghijkl) I do have ...
0
votes
0answers
24 views

Locating unmatched features by hand

I'm using an app which geocodes addresses. It returns the x y fields with the coordinates in a csv file, and so I draw those coordinates in Arcmap, and then create a feature class out of that. What ...
0
votes
0answers
66 views

Plot coordinates and draw a heat map on a GADM map

I am trying to plot insect Resistance data collected at multiple sites on a spatial GADM map. My data looks like this: I would like to build a heat map (with increasing resistance=increasing ...
2
votes
1answer
62 views

Creating a 5x5 poylgon in ArcGIS with a predetermined center with coordinates X, Y [duplicate]

I need to build a polygon (5x5 km) centered on a coordinate X,Y. I want to use this 5x5 square for an eventual clip. How should I proceed in ArcMap?
4
votes
1answer
266 views

Line vs. Polygon Intersection Coordinates

I am working with Python, Shapely and Fiona... Is there any way where I can give in an input of a line shapefile and a polygon shapefile, and get a result of the intersection points and their ...
12
votes
3answers
7k views

How to move vectors to specified coordinates in QGIS?

I have a layer of vectors located around, say, (100, 100), and I want to move them to new coordinate like (1000, 1000). How should I do it? Preferably using QGIS.
0
votes
0answers
91 views

Set coordinate origin to the top left corner

I have a BMP-picture and I know that it's top left corner has the EPSG:3068 coordinates 35500,24390. I would like to use gdal_polygonize and than calculate the EPSG:3068 coordinates of the produced ...
4
votes
2answers
12k views

Calculate bearing between two decimal GPS coordinates

I'm building a virtual tour application that uses custom panoramas in conjunction with Google's StreetView service. With StreetView, you can have 1 to n links at each particular location to move to, ...
1
vote
0answers
54 views

Generate random points for IDs with similar coordinates with ArcMap

I have a dataset which consists of IDs with addresses and coordinates (long/lat). Some of the IDs have similar coordinates. How do I generate random points for the IDs that have those similar ...
1
vote
1answer
97 views

header row in excel is not header row when imported into ArcMap

I am importing an Excel table with X/Y coordinates to plot on a map (point data). The original Excel table has a header row as its top row..The row is 'frozen' in Excel. When I import the table and ...
3
votes
1answer
291 views

Given a Lat and Lon, identify if the point is over land or ocean?

In R, what is the quickest way to identify if a point is over land or ocean? e.g. for: set.seed(0) lat <- runif(10, -80, 80) lon <- runif(10, -180, 180) points <- expand.grid(lat, lon) ...
0
votes
1answer
172 views

Scaling x,y coordinates in proj4

This question was asked before, but without answer. Let's say we have mercator map with given resolution (for simplicity in centimeters). Now let's get coordinates of (lat,lon) = (50, 15): $ proj ...