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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4
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0answers
509 views

Inserting coordinates from Google Maps into a Database

My question is pretty basic. I am using Android Google Maps to take the coordinates off a location on the map and I want to insert it into a PostgreSQL database. I know I have to use PostGIS but how ...
3
votes
0answers
143 views

QGIS 2.8 PrintComposer, no coordinates shown

I tested under MacOS 10.10.3 and 10.9.5 now: In the QGIS v2.8 Print Composer I don´t get coordinates shown when I want to create a map sheet and activate "Draw coordinates". I can do all settings ...
3
votes
0answers
131 views

Unknown gridlines on old Greenland base map!

Can anyone help me out please? I'm using an old 1:10,000 base map of Greenland for a mapping project with nice 10cm gridlines already drawn on. However it uses a coordinate system which is unfamiliar ...
3
votes
0answers
496 views

How to Batch Change X, Y Coordinate Number in ArcGIS?

I have a huge number of points (100000 points). Some of these have the same x,y coordinates. For example, 50 points are same in x,y then 100 points are same in another x,y coordinates and so on. ...
2
votes
0answers
80 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 ...
2
votes
0answers
44 views

Extract coordinates of corner cells of a shape file in python script (QGIS)?

I have a grid in a Lambert Conformal Conic projection (with columns: ID, value) and I want to extract the corners of each cell in the native projection of the grid with QGIS. In particular, I want the ...
2
votes
0answers
28 views

Is there any map API that allows you to pull an address range from a polygon?

I've seen a lot of answers saying you can't draw polygons and get the exact addresses of all of the places contained; thankfully, I don't need so much info. I'm looking for a way to get a vague ...
2
votes
0answers
120 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 ...
2
votes
0answers
132 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 ...
2
votes
0answers
111 views

tfw world file in decimal degrees?

I want to understand how "world files" are created. I found some definitions, like: http://en.wikipedia.org/wiki/World_file which says that the 2 last lines in the file are x and y coordinates of ...
2
votes
0answers
346 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 1-...
2
votes
0answers
109 views

Getting XY screen coords from ArcScene 3D point using ArcObjects?

I already know how to convert screen point (X,Y in pixels) to 3D point: ISceneGraph pSceneGraph = m_pSceneHookHelper.SceneGraph; IPoint pPoint; pSceneGraph.Locate(pSceneGraph.ActiveViewer, X, Y, ...
2
votes
0answers
99 views

Choosing the map scale (1:nnn) for the given raster dimension

Starting points: let define the raster image size, say: 1800x900 pixels I want draw my own raster image map - by drawing polygons e.g. like "draw line from pixel with coordinates x100y100 to pixel ...
2
votes
0answers
79 views

Problem with finding point within the box in MongoDB

I'm doing a search within box. It works perfect except only one situation. Let me describe it. Suppose the point has coordinates: (lng:-155, lat:19) If we have box: sw - (-170, 10), ne (29,69) that ...
2
votes
0answers
67 views

Is it safe to store coordinates on NFC tags always in one CRS and rely on conversion for others

I'm involved in NFC (Near Field Communication) standardization of a record structure for geographic point locations. That will allow to put coordinates on NFC memory tags which can be read with a ...
2
votes
0answers
216 views

How to locate a house on the 3D Map correctly?

I've done my 3D map generation in WebGL/THREE.JS project and have an issue with the building locations. I have the data about building position ( its polygon ) from DB server, but first of all I want ...
2
votes
0answers
226 views

Height of the geoid in ECEF coordinates

I know that the relationship of geoid height N and ellipsoid height h to orthometric height H is defined by H = h - N, but what if I have some position in Earth-Centered-Earth-Fixed (ECEF) coordinates?...
2
votes
0answers
470 views

PyProj/Proj4 convert geographic to projected coordinates for Geostationary Data

I am trying to convert geographic coordinates (in degrees east/north lon lat) to projected coordinates in meters for geostationary full disc data (GVAR Goes East data from CLASS). To do this, I tried ...
2
votes
0answers
827 views

How to limit a specific area in order to have a topographic 3D map using MatLab?

I am using MatLab, I want to build a topographic 3D map, I am following this guide, I have been doing the steps listed on the section Draping Geoid Heights over Topography, and I do not have any ...
2
votes
0answers
287 views

Should 2D Positions and 3D Positions be considered conceptually different entities?

Let's suppose we want to model GeographicPositions, described by coordinates or coordinate tuples inside some Coordinate Reference System. Also, these would be put inside some sequence to represent ...
2
votes
0answers
272 views

Comparing two spatial datasets statistically

I'm new to this forum. I'm working on the following problem - I have two datasets. Let's call it dataset A and B. Both of them will contain a set of points like A1,LonA1,LatA1 A2,LonA2,LatA2 .. .. ...
2
votes
0answers
221 views

Interpolate current Course value of GPS using previous Course values

I have a set of GPS data with Lat, lon and Course. I need to interpolate current value of course, using previous values of Course. The formula I am using is not accurate in curves.In C language I was ...
2
votes
0answers
621 views

Mean coordinates in QGIS

I am using QGIS v 1.7.4 for MAC and I am trying to calculate mean coordinates for a set of points using ftools. To calculate my result I am going to Vector -> Analysis tools -> mean ...
1
vote
0answers
18 views

Grid doesn't show up in printer composer

I am trying to get a coordinate grid on my map with the printer composer. I have tried every example and followed it exactly but for some reason the grid doesn't show up at all. I am working with Qgis ...
1
vote
0answers
18 views

Create points with planar location data

Slightly confused. I need to add 3 point features to an already created map project (state plane projection). The description given to me about the location of the points is the planar location, so no ...
1
vote
0answers
37 views

Converting Lat/Long coordinates to ESRI format

Currently I have a CSV file which has Lat/Long coordinates which I got from the batch geocoding site, http://www.findlatitudeandlongitude.com/batch-geocode/#.VkWv97fNy70. I believe these are ...
1
vote
0answers
36 views

proj4js with geocentric CRS

I am developing a little web app to transform coordinates between CRSs. To do that I am using proj4js, but I notice that proj4js can't work with geocentric CRSs. Is there another tool similar to ...
1
vote
0answers
59 views

Georeference dwg file in arcmap

I have a dwg file and I want to georeference it with ArcMap. I have 4 coordinates given (in Degrees and Lambert), so I should be able to reference it. I used the georeferencing tool in ArcMap, but I ...
1
vote
0answers
56 views

How to perform statistical test for two sets of points?

(I have asked this question originally on Cross Validated; however, no good answer and someone suggested me to ask the question here). We know that we can perform statistical test (e.g., t-test) for ...
1
vote
0answers
70 views

How to get the coordinates of the x-axis from a profile graph in Arcmap?

I have done already a profile graph in ArcMap drawing a diagonal line over a DEM image. Now I would like to add some point locations as it is showed in the attached figure. I set these blue points in ...
1
vote
0answers
129 views

GeoServer TMS with leaflet coordinates are different

I use the example tiger-ny layer from geoserver with leaflet like this: var map = L.map('map').setView([62.92578, 32.08523], 13); L.tileLayer('http://localhost:8080/geoserver/gwc/service/tms/1.0.0/...
1
vote
0answers
51 views

create polygons using 2 coordinates

I have a script that creates a text file containing the upper left and lower right coordinates of my geotiff files in the following format. TileName UpperLeftX UpperLeftY LowerLeftx LowerLeftY I ...
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
0answers
197 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?
1
vote
0answers
48 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 ...
1
vote
0answers
136 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
0answers
64 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 ...
1
vote
0answers
20 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
0answers
38 views

Finding specific area with coordinates out of a lot of LAS data?

I would like to extract spatial data out of a great amount of LAS data. Unfortunately, there is no index or sth that could help me find which file is for what area. Also, it is not possible to ...
1
vote
0answers
126 views

extract x-y from a point created from lat/lon coordinate

Using QGIS 2.8.1, how can you create a point in WGS 84 using a lat/lon and extract X and Y value of this same point in CRS UTM34N. For eg, you have been given a lat 20 deg and lon 50 deg. Create a ...
1
vote
0answers
193 views

How to determine ring orientation from lat/long coordinate points?

We have some set of point coordinates in lat/long which contribute to a polygon. From this set how do we determine the polygon is clockwise or anticlockwise?
1
vote
0answers
30 views

How to best import a US Map Schematic?

I would like to use the following wiki US Map schematic as a background to my map work. (http://en.wikipedia.org/wiki/File:Blank_US_Map.svg) It is a .svg file, and GeoReferencer is unable to import it....
1
vote
0answers
39 views

Coordinates interpolation for video frame synchronization

I'm taking an aerial video with gps coordinates. Here's the problem: the video is x frame at second, and the gps module gives me coordinates every second. So I've the coordinate of the first frame for ...
1
vote
0answers
39 views

QGIS Server Coordinate Switch

I installed QGIS Server 32 bit through OSGeo4W as a localhost service on my Windows machine as of underdarks tutorial QGIS Server on Windows7 I do get my wms up and running but I'm a bit confused as ...
1
vote
0answers
61 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
61 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 ...
1
vote
0answers
102 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
0answers
36 views

Get response from geo server without Coordinates

I have following url of geo server layer, It takes very long time to get response http://54.225.240.244:8080/envision/BaseMaps/ows?service=WFS&version=1.0.0&request=GetFeature&typeName=...
1
vote
0answers
76 views

set extent for jpeg programmatically

I feel like this should be easy, but how can I set coordinates for a jpeg image using Python? I have a python add-in that draws a polygon and then uses its geometry to post a query request to a REST ...
1
vote
0answers
56 views

Does Unicode Common Locale Data Repository (CLDR) library have rules for longitude/latitude coordinates?

Does the Unicode Common Locale Data Repository (CLDR) library contain rules for formating longitude/latitude coordinates? I am looking for information how coordinates should be formatted in each ...