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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7 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 ...
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2answers
387 views

Is a pdf geospatial if the Adobe Reader Geospatial Location Tool doesn't write anything?

Does a PDF contain geographical coordinates if the Adobe Reader Geospatial Location Tool doesn't write anything? I mean that I am moving the mouse over the pdf and no latitude and longitude values ...
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2answers
36 views

Changing longitude,latitude to latitude,longitude in OpenLayers 3?

Openlayers is representing the coordenates as longitude,latitude. Can I change the default format longitude,latitude to latitude,longitude? By example, this will not work, because I have this array ...
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2answers
43 views

get center coordinates of a buiding(way)

Using overpass-turbo I got data like this: { "type": "way", "id": 292833530, "nodes": [ 2963934681, 924717449, 2963934682, 2963934683, 2963934684, 2963934685, ...
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1answer
35 views

how to insert coordinate of province to postgresql?

i need insert to database this area sample: [ [ [ 50.227886556627098, 31.15709614260982 ], [ 50.227886335531331, ...
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0answers
71 views

Is there a way to retrieve/query country data from a shapefile programmatically using map coordinates in GeoTools?

I am using Geotools to parse and draw a shapefile. Now; when I draw that map I receive coordinates with this bit of code for my Flight Line button. void selectFeatures(MapMouseEvent ev) { ...
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0answers
154 views

Extracting shape point coordinates from polylines in MapInfo [closed]

My question follows from Coordinate extraction in a different projection in MapInfo. I now have WGS84 begin and end coordinates for the polylines (which are in British Grid coordinates). How do I ...
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3answers
371 views

How to add XY coordinates (latitude/longitude) to a DEM raster in ArcGIS 10.1

I would like to add xy coordinates of about 10 sites to a raster. I am using ArcGIS 10.1 and my xy coordinates are on Access 2013 database - saved as .mdb. The steps I have taken so far: 1) In ...
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0answers
38 views

Decoding gps data format [closed]

I have some gps data sent in by a gps device.The format of the data is 36.851383,4293.654455,1399702388000,26 The data is separated by a comma. The first part is the latitude, the last is the speed ...
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2answers
132 views

Difference between latitude and longitude

It occurred to me that latitude and longitude are not homologous in that the lines of latitude lie on parallel planes or slices through Earth, while lines of longitude are not parallel and meet at the ...
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0answers
9 views

not able to convert new GPS coordinates using feet [duplicate]

My known latitude is 46 deg 59' 9.6" What would my new latitude be 165 feet north of the known latitude?
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2answers
33 views

Check shape orientation

I have a shapefile with many minimum bounding box (envelope) polygons and I need to find out, if the boxes are rather landscape or portrait format. (See pic below, one of the selected boxes should be ...
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0answers
25 views

Discrepancy between importing same data from CSV and GPS [closed]

I have been importing similar data by using two different methods: Entering the coordinates manually in excel and save as CSV, then importing in QGIS through delimited text layer. Column A is name, ...
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1answer
162 views

Google API for Boundary coordinates

Is there any Google API (or any other) which can provide boundary information (i.e. Lat, Lng) for a particular location. Location can be a city, district or a region with in a city. For Example Dammam ...
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1answer
24 views

How To Calculate RMSE of Geographic Coordinates

I've been working on my project and I stumble upon how I can calculate the RMSE of geographic coordinates. What I have is a derived coordinates from processing LiDAR data and aerial images in ArcMap ...
4
votes
1answer
59 views

If Geographic Coordinates are unprojected coordinates, how can GIS softwares display such unprojected data on a plane?

I have been using ArcGIS and QGIS regularly for about 2 years now, and just recently I was struck by this new thought. If a data set in say, in ArcMap, has been georeferrenced with a Geographic ...
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1answer
25 views

How to get a PNG image of a polygon with the corner coordinates?

How to get a PNG image of a polygon with the corner coordinates in a separate file? I have access to ArcGIS 10.1 and QGIS 2.8.1. I tried this: http://gis.stackexchange.com/a/30503/50606 , but I get ...
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4answers
321 views

How to extract Z data from a point layer

I have created a point layer with ~150 points. I have a DEM beneath it, which is where I have taken the X and Y values from. Does anybody know how I can retrieve the Z values, without using the info ...
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0answers
11 views

ISO 3166-1 + ISO 3166-2 data plus lat long border data

Could anyone please be so kind and point out a commercial/reliable source of up to date ISO 3166-1 + ISO 3166-2 data plus lat long border data?
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1answer
376 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 ...
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0answers
12 views

Kernel Density Estimation - CrimeStat - lat lon mismatch

I currently conduct kernel density estimation for a point dataset. For the KDE in addition a reference file is needed, where the coordinates of the lower left and upper right are specified. The ...
2
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1answer
283 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 ...
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1answer
171 views

Converting between wgs84 and nad83

This is a newbie question that is about converting between wgs84 and nad83. I have aerial photos that I am trying to compute lat long coordinates for as closely as possible. There are several factors ...
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2answers
330 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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0answers
18 views

Distance corresponding to fractions of a minute of lat/long [duplicate]

My GPS is set to degrees minutes fractions of a minute. I am trying to determine the distance represented by a single increment on the Lat and Long of fractions of a minute. IE. traveling from ...
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1answer
38 views

How do I calculate the latitude of an end point given a start point, bearing, and longitude of the end point?

I have a line that crosses the 180. Given the bearing from Point A to Point B, how can I determine the latitude of the point on the line, given the longitude of the end point to be -179.9999? For ...
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2answers
99 views

How to handle coordinates accuracy in ArcGIS

I am creating very basic rectangular polygon using very basic a Python code nCols,nRows=100,100 corners =[[0,0],[0,nRows],[nCols,nRows],[nCols,0],[0,0]] ...
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1answer
63 views

Plot points on map using Fiona and/or Shapely

I have written a parser in Python that extracts the coordinates out of a GPX file and I would like to view those points on a map. I have done a little research and it seems like either Fiona or ...
2
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0answers
20 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 ...
3
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2answers
137 views

Calculate geometry on some features have same X and Y for start and end?

I did "Calculate Geometry" on a line shapefile to obtain the coordinates X and Y for the start and the end of all the lines of the shape. But some lines resulted with the same X on the start and on ...
1
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1answer
28 views

Transfer from Android phone to Windows OS truncates lat long

I am clicking GPS enabled pictures of sites which are less than 500 metres apart through Android based Samsung ACE Duos phone. I later use Google Earth on my Laptop to view these geo tagged pictures. ...
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0answers
36 views

Identify coordinate system used near Kuala Lampur

I have some coordinates that were given to me, and I do not know much about how they were taken. I thought they were UTM coordinates, but when I try to convert them using some online tools I always ...
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0answers
11 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 ...
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3answers
2k views

What are the coordinates of the mysterious hole in Siberia?

I am interested in taking a Google Earth aerial view of the mysterious hole recently discovered in Siberia and perhaps doing some hydrological analysis of the area in a GIS. However, there appears to ...
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1answer
36 views

Coordinates for specific points calculated in QGIS Field Calculator?

I have got a layer in QGIS that is comprised of connected points which define regions of a country, thus the attribute table consists of 38 regions while the number of nodes in this layer is about ...
0
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1answer
103 views

Draw polygons from an array in OL3

I have an query that produces an array of coordinates like so: 95.61,38.60 95.22,37.98 95.60,37.66 94.97,37.65 (long/lat separated by "," and coordinates separated by a space). How can I use these ...
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1answer
175 views

autocad-map of real estates with own coordinate system and information to be converted to use it in QGIS

I have a question regarding CAD and QGIS, but unfortunately I don't have a clue of CAD. Here it goes: Real estates data has been mapped. There are several reference points surrounding the area. So ...
3
votes
1answer
2k views

Understanding the difference between coordinates projection in OSM and Google Maps

I'm looking at the coordinate differences between Google Maps and OSM. I'm a noob in the technicality behind GIS. Having read: EPSG 3857 or 4326 for GoogleMaps, OpenStreetMap and Leaflet How to ...
4
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2answers
675 views

Getting XY coordinates and field values for each row in ArcPy SearchCursor?

I am trying to enumerate each row of a points shape file and get a certain field's value (elevation) and the xy coordinates. But I see I can only use: arcpy.SearchCursor to get the field; OR ...
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1answer
319 views

Haversine formula to calculate distance between real coordinates?

I need to calculate distance between two stations in a map in order to calculate empirical variogram in ordinary kriging to interpolate temperature data. Calculating distance in kriging using ...
0
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1answer
44 views

Fixing mercator coordinates that are outside the world bounding box?

I'm using mercator-projected overlays from a crowdsourced website where volunteers georectify images of maps by hand. Unfortunately, the slippy map that serves as the site's interface wraps and allows ...
0
votes
1answer
40 views

ArcPad custom edit form validation behaviour

I have a custom ArcPad form, which includes the geography tab. Users use this tab to update coordinates using the GPS. When user press OK in the edit form, I want to first check that they have not ...
7
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0answers
1k views

Calculating compass bearing between two GPS coordinates… with a twist [closed]

I'm building a virtual tour application that uses Google's streetview code to render the panoramas into a non-distorted view. Each panorama has 1 to n links where the user can select to move on. I ...
1
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3answers
296 views

convert csv to kml or geojson, etc using ogr2ogr or equivalent command line tools (use “latitude” and “longitude” attributes for coordinates)

I've just unsuccessfully tried to use ogr2ogr to convert CSV into KML like so: ogr2ogr -f "KML" output.kml input.csv The csv has "latitude" and "longitude" columns. The attributes are all loaded ...
3
votes
1answer
137 views

Is it possible to update only latitude or longitude in postgis?

I have a postgis database that contains Points created based on a couple (longitude, latitude), and I need to update only one of those two for a given point. I found that it's possible to do so but ...
1
vote
1answer
61 views

How do I convert a screen position to geographic coordinates?

I'm looking for resources that explain how I should convert screen coordinates (the point that I pick on-screen) to geographic coordinates (lat / lon). I want to build an application where, the ...
8
votes
2answers
195 views

What's the difference between coordinateDimension and spatialDimension?

The OpenGIS standard mentions three methods to query the dimensions of a Geometry: dimension(): the inherent dimension of the geometry: 0 for Point 1 for Curve 2 for Surface coordinateDimension(): ...
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0answers
33 views

Obtaining ECEF Velocities from givens of LLA coordinates, heading, and speed

If you are given positional data in lat/long/altitude (LLA) along with a heading and speed, how do you go about computing the Earth Centered Earth Fixed (ECEF) components of velocity? Additionally, ...
3
votes
0answers
69 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 ...
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1answer
84 views

How to decode GPS coordinates from Android device XML file?

I’d like to decode the location coordinates from the XML file from my Android phone (SGS2). Any solution how to do it, how to convert them to usable coordinates (longitude/latitude)? Looks like it's ...