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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161 views

ArcMap 10.1 - UTM Zone Display Mismatch

I've recently noticed that the UTM zone displayed in the Identify box and the "Goto XY" box display a different UTM zone than the one I'm in. I'm working in WGS84 NAD83, Zone 13N but when I use the ...
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111 views

Polygon Nodes do not have separate coordinates [duplicate]

I'm attempting to measure the distance of a series of points from a smaller number of polygons. As a first step, I've changed the polygons into points along their border, via the Vector> Geometry ...
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157 views

ROAD COORDINATES Data (CARDIFF)

Does anyone know how to get road coordinates data from openstreetmaps? I know its possible I just don't know how. Thank you!!
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366 views

I want to import an Excel spread sheet with desc, northing and easting into Google Earth to make a KMZ

I have a spread sheet with three columns containing a Description, a Northing and an Easting in UTM. Instead of entering the points in by hand, I want to find a faster method. Any help is greatly ...
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209 views

Calulate distance between two points [closed]

If I have two coordinate points of (lat, lon), how would I calculate the distance between the two?
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43 views

Obtaining coordinates when computing distance of a polygon to a line

I have a shapefile of a county. I am interested in computing its distance to a line, which I've been doing using Near. I want to know the coordinates on the line that produces the minimum distance. ...
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515 views

Aligning coordinate systems: gpx, LiDAR, shapefile

I am working on a project based on a lidar data set (for use in LidarViewer in Linux, a basic x,y,z viewer) that was downloaded from #1 below at Opentopo.org and looking to add onto this data set with ...
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3answers
2k views

Calculate XY Coordinate with “CalculateField” tool

I used model builder to build a model which can calculate the XY coordinates and it's perfect! However, when I export it to VBscript and run it in VBA it crashes.... The error happens at ...
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40 views

Is it possible to link a QGis project with an excel file?

I have an Excel file with coordinates and I have used this file to plot the coordinates in QGis. I was wondering if it was possible to permanently link the excel file to the QGis project, so that when ...
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2answers
100 views

How to extract X Y coordinates and RGB from pixels using python in QGIS?

I'm trying to white a Python plugin in QGIS (2.2) to get, for each pixel of a raster image, its X Y coordinates, as well as, its RGB (3 bands) values. At first I opened the raster file using: rlayer ...
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2answers
117 views

Given a flight path given in latitudes and longitudes, how do I find another flight path that is parallel to the path given?

Given a flight route that is given in latitudes and longitudes, how do I find another route that is "parallel" to the route given (find a perpendicular line to each waypoint given)? I think the best ...
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1answer
60 views

OS Boundary Line shp export CSV with description and lat/lng

I have found several post saying it is possible in QGIS to export OS Boundary Line shp files to csv's containing the boundary line in lat/lng (for use on Google map) along with the name of the area, ...
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51 views

Get XY value from TiledMapService Layer Tile

I have an ESRI TiledMapService layer and I have attached an event handler to the TileLoaded. Given the level, row, and column, how can I get the envelop of the tile in map coordinates? I'm using the ...
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29 views

Capturing GPS coordinates on the ground in Boliva?

Assuming no cellular or internet connection, what is the best way to capture GPS coordinates on the ground in Boliva? Preferably a free approach. For example, are their any android apps that can do ...
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1answer
157 views

Trasformation from ECEF to ENU

I am trying to transform a local vector rECEF from ECEF coordinate system to ENU coordinate system (rENU) where ECEF = earth-centered earth-fixed coordinate system ENU = East, North, Up coordinates, ...
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2answers
54 views

Create Geographic Reference for X,Y Coordinates [closed]

I have a set of x,y data that do not have any sort of geographic reference. I have lat/longs (WGS 84) for a small set of those points. How can I calculate lat/long for the remaining points so I can ...
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1answer
57 views

How to calculate weighted mean coordinates with negative weights in QGIS?

Hi, I'm pretty new to prof. GIS, but have OSM experience. So if I just miss something obvious, please don't punish me :) I have a .CSV file with measurements of wifis along a track. I like to guess ...
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1answer
80 views

Google Earth tour LookAt not looking at same place as Placemark with same coordinates [closed]

I have tried to create a tour from a csv file. I want the tour to look at each Placemark in turn but the view is of a different set of locations when run in Google Earth. The Placemarks are plotting ...
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2answers
98 views

Automatically create polygons from top right and bottom left coordinates?

I have a CSV file with hundreds of records. Each record contains 2 matching coordinates, 1) top right corner of a rectangle, 2) bottom left corner of a rectangle. Polygon ID, Lat 1, Lat 2, ...
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2answers
93 views

Coordinates system in degrees in plugins for QGIS

After adding a vector layer of coordinates of settlements of a part of the world INTO QGIS 1.8, I wish to add a topographic or other nice looking, colored map. Trying plugins like maps from Google ...
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3answers
516 views

Generate random location within specified distance of a given point

In a simulation (not using any GIS), I need to generate a random location that is within a specified distance of a given location. I found a very helpful post here on this exact topic: How to ...
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1answer
67 views

Conversion of coordinates of “Bochum coordinate system”

I need to convert historic coordinate data into more recent Gauß-Krueger data. Specifically, I need to convert "Bochum coordinates" used till 1960 in the local coal mines into DHDN/Gauß-Krüger zone 2 ...
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1answer
216 views

Adding Basemap and changing projection - still not aligned

I am using the basemap in ArcMap10 to create a shapefile of hand digitised polygons based on building outlines. However, when I change the basemap projection to Brit Nat Grid, it does not line up ...
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1answer
90 views

How do I obtain layout coordinates of features using arcpy?

I just read the topic about Convert point XY to page units XY using arcpy? but I didn't find a solution to my problem. I have a point layer file, I know coordinates in map view, I'd like to know ...
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1answer
420 views

convert GPS to x,y using reference node

i am using sensor nodes and their antenna to calculate GPS coordinates as notation of (degrees/minutes/seconds), i have some question of how to do these things: how can i convert latitude and ...
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2k views

Make POINT from longitude/latitude coordinates from existing table in PostGIS

I would like to make a POINT using the longitude and latitude columns of an existing table. Here's a link to the documentation of ST_MakePoint. Here's my table: CREATE TABLE sysinst.bio ( oid ...
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214 views

How to divide a certain country on a map into grids?

I want to divide a certain country into grids 1,2,3,..., which are divided equally - in other words, have the same width and length. Then, I want to know into which grid a point coordinate will fall ...
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1k views

Dynamic scale bar, coordinates and grid for map frame in Mapinfo map layout

I believe dynamic scale bar and coordinates (grid) for map frame in map layout are BASIC things which Mapinfo (GIS software for thousands dollars) should allow me to do. To make it clear I am talking ...
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2answers
459 views

Java GIS framework with custom shaped markers

I am completely new to GIS theme and I found this board so I hope I can get good advices from experienced users. I need to find an open-source Java framework/library/api that would generate an map ...
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50 views

LLA vs ECEF--which to choose?

I will be providing points in 3D to an external source via XML. One coworker suggests Lat/Long/Alt and another suggests ECEF. We can do either without much trouble. We have an existing product that ...
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2answers
82 views

Saving a gml layer does not change coordinates

I am trying to export a gml layer to geojson with lat/lng as the preferred coordinate system. So what I did was a 'save as' on the layer with selected CRS: 'IGNF: WGS84G'. Now I was hoping it ...
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0answers
82 views

Converting custom grid to OS grid

I have two sets of data, one is in OS coords, no problem there, but the other was set out in about 50 off 10x10 metre grids aligned to a 'feature' on the ground. I do have the OS coordinates of their ...
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38 views

Extrapolate data and district names from map

My data: soil samples in each district. My question: I want to extrapolate from the soil sample's map the names of the districts in which the samples have been collected. I have already found the ...
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1answer
338 views

Leaflet: Container coordinates vs Layer coordinates?

What is the difference between map container coordinates and layer coordinates? From what I gathered, the map container coordinates are always relative to the map viewport, and while layer ...
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122 views

How to define coordinate system and geographic transformation for a CAD drawing?

I am a GIS guy and I occasionally work with CAD files as well. Now I need to know how I can define a coordinate system and a geographic transformation for a CAD Drawing. According to ESRI: "You can ...
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1answer
83 views

Insert geometric data to a column from coordinate values in double precision

Screenshot of database http://wp.me/aIW9p-i0 For table “households”, I want to create two new columns: 1) “Geom”, data type – geometry; 2) “WKT”, data type ‐ text; I am intending to do the following ...
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1answer
114 views

Linear unit of a Coordinate system

My dataframe coordinate system is in UTM with linear unit Meter. If I have a Polygon shapefile in a UTM coordinate system with a linear unit of Foot_US and I am sent a shapefile in the same UTM ...
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873 views

convert GPS to XY coordinates

if i have obtain GPS coordinates as Latitude/Longitude, then i need to convert them to XY coordinates, i see this link actually i need to get the Trilateration , in its equation i need the XY ...
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3answers
1k views

Openlayers vector feature coordinates are not transforming,

I have a OpenLayers vector with a single feature [0]. It's coordinates are in the map projection (EPSG:3413) and I want them in WGS84 (EPSG:4326) decimal degrees. I have the following code which ...
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1answer
296 views

Retrieving XY from point graphics set in WPF network (arcgis 10.0)

I have a WPF application using ArcGIS 10. In the application I can set two point by clicking on map and calculate route between them. every time I click on the map, The application creates a ...
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0answers
121 views

Google earth incorrectly rendering coordinates?

My circles are rendering funky on the poles, and along the equator. Here are my coordinates: 158.05553767833,-78.151355482613 152.68654993135,-76.924955252783 147.72303124605,-75.713526831152 ...
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112 views

Is there a ModestMaps or other flex library for finding the distance between 2 lat/lon coordinates?

I'm using ModestMaps in my Adobe Flex application. Is there a flex library method to calculate the distance between two of my lat/lon coordinates, or am I stuck coding the Haversine by hand? I've ...
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149 views

gdallocationinfo from C++?

I need a C++ API to convert x,y Image Coordinates in their native projection to output image pixel,line coordnates. I see the gdallocationinfo documentation, but no API for it. Where in online GDAL ...
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25 views

Translate geographical coordinate [duplicate]

Possible Duplicate: Calculating Lat/Lng X miles from point I would like to know how could I translate a geographical coordinate to an specific distance. So for example let's suppose I'm ...
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0answers
380 views

How do I convert WSG-84 coordinates to lat/long? [duplicate]

Possible Duplicate: coordinate convertion: decimal degree to deg-min-sec of lat/long coordinate I am looking for either an online tool or one that I can download to convert WSG-84 ...
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1answer
313 views

What datum (reference ellipsoid) does Nasa Worldwind use?

What datum (reference ellipsoid) does Nasa Worldwind use? I can't seem to find where Nasa Worldwind tells explicitly what datum they use. I need some sort of valid link.
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3k views

Get geometry from coordinates

I have a table with geometry column called point, saved in SRID 4326. I want to get the geometry by its coordinates, but something didn't work. I suspect database configuration or something. Here is ...
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1answer
110 views

If the Earth was flat, what unit of measurement would distances between geographic points be represented as?

A whole lot of abstraction- given two longitude/latitude points given from a GPS, I'm using the Pythagorean distance formula to find the distance between them. What unit of length would the distance ...
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1answer
74 views

How to get from Lat/Lon to this format?

I have twitter data with coordinates such as: [-7.2377761, 112.73091137] I'm working with a python geo library called osgeo. The sample code indicates creating a point like this. point = ...
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2answers
299 views

Find longitude for point between two coordinates with pyproj?

I've written a function to get the longitude of a point of known latitude between two known points (might not be working correctly yet), but I feel like there must be a better way of using pyproj to ...