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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15 views

Longitude difference to Meters

I have been trying to find an effective method (be it an equation or table filled with values) that would be useful for converting differences in longitude values into a distance in kilometers. It ...
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1answer
304 views

SharpMap Coordinate transformation Problem

I want to transform my layers from SRID 31463 (Gauß Krüger) to Webmercator. Since SharpMap does only know webmercator and WGS84 i tried to create the Coordinate System 31463 by WKT and applied it on ...
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3answers
95 views

How can I convert the following coordinates to something I can put in Google Earth?

I've tried converting the following lat/long data into Google Earth but the intersection doesn't show up on my map when I try entering them. What does N87° 40'20"E convert to? What does N1° 49'33"W ...
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1answer
50 views

Why is my coordinate notation different?

I was working on a project in WGS84, and I was continually adding layers to it. As I was rendering in print composer and enabled grid-coordinates, I noticed that my coordinates were different. It's ...
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1answer
261 views

How to measure distance between two coordinate pairs taken from NMEA file?

In order to measure momentary speed, first I need to measure the distance between two pairs of coordinates. That's where my lack of knowledge stops me. I have example data in NMEA format: $GPGGA,...
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3answers
1k 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 ...
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0answers
70 views

Rotate polygons in JavaScript using openlayers

I want to know some ways for rotating polygons. I already success using spring and server, but what I want to do is rotating polygons using 'only' Javascript and openLayers3, not using server. Here ...
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1answer
22 views

How to add start and end coordinate to attributes of a road network?

I have generated a road network from open street map data. How can i add start and end coordinates (point_x, point_y) to its attributes table via toolbox or arcpy? That's how the roads look like. I ...
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0answers
21 views

Get coordinates from drawn items with Mapbox-gl-draw

I'm using mapbox-gl-draw in my application and I need to get and save the coordinates of the drawn items on the map. I've checked and I found turf getCoor method, but I don't know how to access the ...
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2answers
413 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 ...
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1answer
264 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 ...
3
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1answer
97 views

Unusual behavior of coordinate grid in QGis Composer

The coordinates in the grid in QGis composer display incorrectly when using the "degrees, minutes, seconds" option (or even decimal degrees). It displays West and East in the longitude and North and ...
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0answers
13 views

Click to copy Co-ordinates From QGIS

I have a created some point data using CRS ESPG:4326 and added Google basemap from Open-layers plugin. While adding the Google maps imagery i have changed CRS to ESPG:3857 in project properties. ...
2
votes
1answer
25 views

Qgis load a set of excel points into a googlemap with only one point with real coordinates

I am working with a google map on which I want to attach a grid of five points. Only one of them has real coordinates in the centre, point O ( 8.32688E, 48,32933N). For all the rest only the excel ...
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1answer
36 views

PostGIS Unknown Coordinates Format

I've turned a shapefile into a postgis table using shp2pgsql-gui. Then, i wanted to get the coordinates of geom column, for that i converted geom to WTK throught ST_AsText(geom) function. The ...
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2answers
595 views

How to plot lat/long stored as text in Oracle DB using report builder/SSRS r2

We use an Oracle 10g database. However we write reports using SSRS or report builder, using the Oracle connection type to the datbase. In oracle we have 2 text fields, one for lat and one for long. ...
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3answers
263 views

Densify a JTS LINESTRING (add points)

I have a LineString I would like to "soften" in a way that if two coordinates (vertices) in the LineString are very far apart, I want to automatically add some coordinates in between. The line ...
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0answers
32 views

Knowing coordinates of four corners

I have exported map as image from ArcGis. How to know the coordinates(latitude and longitude) of four corners?
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0answers
33 views

Using ArcGIS for clustering and correlating large datasets

I have a large amount of historical lightning strike data (with lat, lon and timestamp) and am trying to separate out isolated events, which aren't part of larger clusters found in thunderstorms (i.e. ...
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1answer
20 views

Location Unit Conversions Data

I'm making a unit conversion code to convert from an Earth-Centered, Earth-Fixed (ECEF) location to a Latitude, Longitude, and Altitude (LLA) location and vice versa. I'm also making a code to convert ...
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1answer
30 views

Quick way to produce polygons to cover variable precision lat / lon points?

I'm using the Smithsonian Global Volcanism Database and have a .csv lat lon points from it. It seems they are using decimal precision on their lat lon to give a rough idea of the size of the area that ...
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2answers
53 views

Plot x,y coordinates on a Polyconic Map Projection

I have an image of a large polyconic map projection: (Note that the actual image is much larger, I just made it smaller to upload it.) I would like to take in a user's GPS coordinates and plot where ...
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1answer
1k views

How to make coordinates match between Google Maps and matplotlib.basemap

I'm trying to plot some data with matplotlib and basemap, but I have trouble making the coordinates match between Google Maps and basemap. For example, I click at a distinctive feature on the map in ...
3
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1answer
505 views

Determine when I have crossed state line?

We are currently using the Google Maps API to get route information and total mileage but we would like to determine when we are crossing into a new state. When we return the route information we can ...
2
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0answers
22 views

Sri Lanka paper map sheet key

I have a list of river gauging station locations, with the coordinates given in a local system: L/24(5.5*8.15) O/13(3.5*0.15) P/3(0.9*2.1) M/17(13.5*1.6) Presumably these coordinates are pointing ...
2
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1answer
343 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 ...
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1answer
137 views

VB.net Converting UTM to Lat/Lon (State Plane with WKID) - ArcGis

I have looked at many libraries. Many simply don't work, others are very poorly documented. I have a very long list of X/Y coordinates (US FT) and an associated WKID. I am trying to convert that to ...
0
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1answer
205 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?
2
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1answer
37 views

Converting UTM coordinates to WGS 84

I know the coordinates below are in UTM 36N (due to the EPSG code), and I can convert them with several websites online to wgs 84 and see them in Google Maps. However, been helplessly looking the ...
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0answers
22 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 ...
0
votes
1answer
370 views

Check if a point coordinate is between linestring coordinates

I know that, linestring is a vector and if i want to check that, if point coordinates are between linestring beginning and ending coordinates then i need to use vector comparison (x2 > x && ...
1
vote
1answer
37 views

Why does Print composer draw wrong coordinates?

QGIS Version: 2.14.3 EPSG: 32630 (WGS 84 UTM Zone 30N) I´m trying to draw a grid with EPSG: 32630. Layers are in the same CRS. As you see, coordinates are completely off. It does not matter if I use ...
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3answers
221 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 ...
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2answers
163 views

get lat/lon values of every start and end point of polyline

I have a polyline shapefile with 166 different line features. How would one populate the attribute table with x and y values of the start and end points of each line?
0
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1answer
509 views

Coordinate extraction in a different projection in MapInfo

I have a .TAB file of polyline objects in British Grid Coordinate. I need to extract the end points/nodes of each polyline and find their latitude/longitude (WGS84).
2
votes
1answer
52 views

How to set a python code to trigger on any update on a feature class

For example, when I have a geometry change on a point, I would like to update the X and Y fields to the new current location, I understand how to make the code, but not where do I set or put it to be ...
6
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5answers
4k views

Calculating coordinates of square x miles from center point?

I am trying to create a x mile square (or circle) around a central point, where all sides of the square would be x miles from the centre. I need the 4 corner coordinates. It is scrambling my brain ...
0
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0answers
39 views

Calculate latitude and longitude on the arc given radius

I have two points with known latitude and longitude. What I need to do is to draw an arc between these two points on a map. So, I use the following algorithm: Find the latitude and longitude of ...
0
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1answer
23 views

Export csv-coordinates to JSON - square brackets [closed]

I´ve got multiple point-layers that I want to join in a single JSON-file used for webmapping. The layers is to be listed in column by column like this: [55.778659,12.151137 ], [55.77272358,12....
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1answer
31 views

How to get (x,y) coordinates given MinGX, MinGY, MaxGX, MaxGY? [closed]

I have a set of data that stores the MinGX, MinGY, MaxGX, MaxGY values of each location. I need to find the (x,y) coordinates of these locations. Is there any way to do this without using/downloading ...
4
votes
9answers
22k views

Creating shape file from file with coordinates

How can I make a shape file of an csv file with coordinates?
0
votes
1answer
31 views

Create a turf polygon from extents to check intersection with other polygons

I am storing the bbox of layers as strings, as the following string : var layerExtent='[768039.2602094524, 5772524.37609651, 2313901.7202488566, 7435794.111581946]' and I'm using this method to ...
5
votes
3answers
165 views

Determining coordinates of a SHP file

i have a SHP file of a building converted from a DXF file. This SHP file is unprojected and have no specific coordinates (origin 0,0). I find WGS84 coordinates (lat, long) of this building from Google ...
3
votes
1answer
21 views

Defining a local CRS that is basically UTM31N rotated by 43.22 degrees

Working with some data in the North Sea and basically I'm a bit fed up of working at a slant of 43.22 degrees. I was thinking it must be possible to define an orthogonal local coordinate system as a ....
0
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1answer
83 views

Coordinates from Excel list

I'd like to import Coordinates from an Excel list, for this reason I saved the excel sheet as an .csv ant tried to import it via "Layer --> Add delimited text Layer". The points are imported, but with ...
4
votes
2answers
610 views

Plotting X, Y coordinates generated from MySQL database in QGIS

Currently running QGIS 1.8.0 on Mac OS X 10.8.4. I can plot points on a map using the "Add delimited text layer" plugin to get x-y coordinates from a text file. However, I'd like to be able to ...
2
votes
1answer
72 views

Converting a CSV to DXF using ogr2ogr from the command line

I am trying to convert a .csv file to .dxf using ogr2org from the command line using the following command: ogr2ogr -f DXF control.dxf opua.vrt This is the .vrt file I am using: <...
14
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4answers
11k 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
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1answer
42 views

Arcgis FeatureLayer.MODE_ONDEMAND not select exactly coodinate?

I'm working with ArcGis API. I push my Feature Layer on map in MODE_ONDEMAND. But when I select feature (selectTask), the coordinates come out as [692010, 101011], with no decimal places. What I want ...
1
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1answer
185 views

Finding coordinates of the image corner

I have a .bmp image with a map. For creating image i used a Ingeo 4.4 and function MakeImage() What i know: Height an Width of bmp image dpi Map Scale Image Center's coordinates in meters. What i ...