Angular geographic coordinates that specifying the north-south and east-west positions of locations.

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9 views

D3: center a map feature using correct latitude and longitude, without rotation?

The following is a map of Chicago which I've created in D3.js, and the JS code to render it. I had a very hard time centering Chicago within my viewfinder (the white box). After much trial and ...
2
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0answers
26 views

Retrieve Google Maps API friendly latitudes and longitudes from shape file polygon

I have a shape file with a polygon in it, and I am trying to the latitudes and longitudes associated with it so I can use them with the Google Maps API. So far I have been working with QGIS Lyon and ...
1
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1answer
17 views

How to point out a place in iframe using latitude and longitude

I want point out a place using latitude and longitude in following frame, <iframe width="75%" height="550" frameborder="0" scrolling="no" marginheight="0" ...
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1answer
48 views

Convert to lat-lon coordinates GDAL

I have a netCDF file and would like to convert it to LAT-LON coordinates. 1) I do not know the projection in the file but from the website of the data provider, the data is on a polar-stereographic ...
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1answer
45 views

Plot the longitude and latitudes on map using geotools

I am new to geotools and i find bit difficult to plot a point using the latitude and longitude values. can any one help me out to solve my problem. I tried the following code but not helpful.By ...
4
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1answer
69 views

convert lat/lng to pixel and vice versa

This had been asked previously on Stack Overflow. I've tried different methods/formulas but results are not correct. 40.764296,-73.97302 should result into 930,3590 pixel on map image. I've Manhattan ...
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2answers
96 views

Calculate the distance between two coordinates (WGS84) in ETRS89

I have an Excel-file with coordinates (WGS84). From these coordinates I create a line (shp) and transform it (ETRS89). After the transformation I calculate the distance from point to point. I do this ...
3
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2answers
143 views

latitude/longitude to linestring or points

I have a gps file that I have converted to csv, I would like to convert a longitude/latitude to linestring if the next row have a diferent longitude/latitude (if the car mooved) and if not convert it ...
2
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2answers
58 views

How to get an area Latlong geometry directly from google map?

I am new to field of GIS. I need to know that do we have an option of getting latlong of a building that we see in google earth or any Point of Interest areas. Something like i create & drag ...
3
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2answers
35 views

Adding Excel file with degrees to map with CRS in QGIS?

How can I add a layer with X,Y in degrees (from an excelfile) to a map with CRS? I am using QGIS 2.8.2
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0answers
15 views

Create polyline at latitude line

I would like to create a polyline shapefile that runs along a line of latitude between two points of longitude. I have been able to create a line by creating a new shapefile, then editing the vertices ...
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0answers
43 views

Convert XY to Lat Long using SQL?

My organization is creating a 311 mobile app. The backend is all run through SQL and report emails are generated. We are grabbing the xy from the app and then want to translate it to Lat/Long to be ...
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1answer
25 views

Shortest and longest amount of numbers that latitude and longitudinal coordinates may have?

What is the shortest and longest amount of numbers that latitude and longitudinal coordinates may have? For instance i know that London is 51.5072 0.1275. So the first value is 6 numbers and the ...
3
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1answer
18 views

Help with Meters at Lat calculation accuracy, two methods

So I'm coding a program (c++), and thing leads to thing, and I need to find out how many meters to a degree of longitude at a specific latitude to a very high precision. Optimally < 1 meter at all ...
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5answers
180 views

Detecting and fixing outliers in a GPS trajectory

I need to find an algorithm or method that can detect outlier latitude longitude points in a trajectory during post-processing, which can then be fixed (brought back into the trajectory's path based ...
1
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0answers
24 views

Degree Precision vs. Length [duplicate]

https://en.wikipedia.org/wiki/Decimal_degrees I found this chart in one of the questions here. Additional to this: When making a measurement and getting 2 Measures of Latitude, for example ...
4
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1answer
128 views

How to extract specific information from GRIB files?

How to extract fetched GRIB data with Python and gribapi package (link goes to official ECMWF Wiki)? I tried to follow few examples from their "documentation" and do it myself, but I just cannot ...
1
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1answer
25 views

About geodesic or azimuth and UTM and Google Mercator projections

I need to calculate to azimuth between two points. I'm using Projnet and GeographicLib to get the azimuth. So I have a UTM projection map then I need Projnet to get Lat/Lon coordinates because ...
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0answers
138 views

Transforming zonal and meridional velocity from regular lat lon to rotated lat lon?

Like in Transforming regular lat/lon to rotated lat/lon? that was asked before, I am working with climate data and I need to transform zonal and meridional velocities (u and v) from regular lat lon ...
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0answers
22 views

Read latitude/longitude to create new point grid at higher resolution

New to SE, needed to reformat my other question. Basically I'm looking at reading a CSV with longitude and latitude points (in this case housing exposure, simplified below): HUC4,Longitude,Latitude ...
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0answers
55 views

Figuring out format of GPS coordinates and choosing projection

I have a list of GPS coordinates (they should be near the coast of Guinea) and I am not sure what format they are in. After I figure out the format they are in, I want to better understand the process ...
0
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0answers
23 views

More pythonic approach to resolution increase of point locations

Excuse my first question being slightly more Numpy and less actual GIS, but it relates to latitude / longitude so I thought I'd give it a shot. Problem: I have a flat file with latitude and ...
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0answers
42 views

Converting UTM to Lat Long inside a Game Engine(Untiy 3d)

This is my first post on Stack Exchange. I have exhausted my research through the game engine forums, so I am trying this forum since you guys seem to be the experts. I have an external device that ...
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1answer
45 views

Calculating distance to a fixed point on a map

I have a point with latitude 40.7127837 and longitude -74.00594130000002 I have imagined this point on a plane like this Latitudes run from West to East and longitudes run from North to South Can ...
2
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2answers
177 views

How to find multiple centers of gravity?

Say I have a number of customers in a geographical area, marked "c": Each customer has a Lat/Long. I would like to find x number of points, in the same space, that best serve the customers, ie. ...
2
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2answers
84 views

Getting origin as long, lat in GDAL without knowing EPSG

My goal is to get the long, lat coordinates for the origin of a particular geotif. gdalinfo outputs: Upper Left (-2764486.928, 3232110.510) (130d 7'22.42"W, 49d56'48.81"N) But I don't understand the ...
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0answers
25 views

Is it safe to query for points contained within polygons using a lat-long projection?

I'm querying for points contained within a polygon. All data - both points and polygons - is stored in latitudes and longitudes. Technically I should probably project this data to a suitable local ...
0
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2answers
101 views

How to convert projected coordinates to geographic coordinates without ArcGIS? [closed]

I'm trying to convert a series of points from Easting Northing to LatLong, I have this working perfectly in Arc but ideally I would like the algorithm to do it through our own system. It is a huge ...
2
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1answer
93 views

LAT LONG wfs GetFeature query - arcgis verses geoserver geospatial data servers

We could be querying a Geoserver or ArcGis server for WFS features (v1.1.0). However I'm finding that Geoserver takes the envelope bounds in LONG LAT and Arcgis takes them in LAT LONG. The use of ...
0
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1answer
41 views

Converting from lat/long to EPSG:2154 using ProjNet4GeoAPI?

I'm not experienced with GIS. I received long/lat data and need to convert them to GIS. Here are code examples from the library ProjNet4GeoAPI : ...
2
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1answer
64 views

Converting from lat/long to EPSG:2154, in C#?

I don't know much about GIS. I'm working in C#. I'm receiving latitude/longitude data and need to convert them to EPSG:2154. I've done some web search but I'm still not sure where to start. Is there ...
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0answers
39 views

Calculate the latitude,longitude 1000 kilometers east from a given location [closed]

I am trying to calculate what would the Google maps latitude and longitude be, for a given location, 1000 east from it. I am not looking for an application which can do, this, but rather a manual way, ...
2
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2answers
35 views

Turning part UTM, part degree coordinate into location on Google Maps?

I'm really new at this and not actually sure what kind of coordinate this is but I need to know where this coordinate leads to. The cöordinates are part of a province wide "fox hunt" in gelderland, ...
4
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1answer
60 views

PostGIS > Intersect two circles. Each Circle must be built from Long/Lat degrees plus radius

I'm trying to figure this out, so I wanted to try asking to the experts. This question is related to PostGIS (from postgresql). What I want is: 1) Based on a longitude and latitude I want project ...
1
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1answer
46 views

Lat long co-ordinates in geojson format for Alaska(smaller), bigger Guam and Puerto Rico?

How do I get the geojson format of Alaska, Guam and Puerto Rico in different sizes ? The sizes I have for Alaska is too large and too small for Guam and Puerto Rico. I'm very new to mapping ...
1
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1answer
154 views

Find the area of a map (Xkm x Ykm) from the left & right longitude and latitude

How can the area of a map from OpenStreetMap be determined in the form of Xkm x Ykm, given the following information: Left Longitude = 103.554879 Right Longitude = 103.740497 Top Latitude ...
0
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1answer
58 views

Sectors pointing to a lat long [closed]

Is it possible to find which sectors of a site are pointing to a specific lat long at a distance away?
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0answers
182 views

Using Python to compute the distance, speed, and time between coordinates (lat/long) using haversine formula and print results within .csv

I have a .csv file with 10 columns. The first column is titled Distance_Between_Points, the second column is titled Time_Between_Points, and the third column is titled Speed_Between_Points and all ...
3
votes
1answer
42 views

Get tile layer intensity at given zoom and longitude/latitude (Leaflet)

I can display a tile layer as an overlay in Leaflet via an url of the form path/to/my/tile/layer/{z}/{x}/{y}.png : my_overlay = L.tileLayer('http://path/to/my/tile/layer/{z}/{x}/{y}.png', { maxZoom: ...
2
votes
1answer
98 views

How to make slope map from elevation map in Lat/Long?

I have an elevation raster map of the world, in Lat/Long. When I make a slope map, the results of the raster cells will be either 0, or values close to 90. The problem seems to be that the Slope ...
1
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0answers
41 views

mysql query to transpose latitude and longitude of a polygon

I have mysql table with shape column that stores the latitude and longitude, I need to write a sql query that transposes latitude as longitude and vice versa. I couldn't find any easy to get this ...
3
votes
1answer
68 views

Does the mean of latitude and longitude make sense?

The problem setting: I have a time series of geolocation data, namely latitude and longitude. I want to downsampling the time series and don't know if taking mean value of latitude and longitude ...
0
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1answer
487 views

Convert Lon Lat to XY in Openlayers 3

I have a map which retrieves Points of Interest from a database and displays them however the Lon Lat need to be transformed into XY to be placed properly. Currently the all just appear at O,O and I ...
0
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1answer
45 views

How to get Lat/Lng from a Geometric property?

Alright, I am very new to GIS, my question might not even make sense, but help me get through this. I have this JSON data of some fields which have this geometry property: "geometry": ...
1
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1answer
679 views

Using Python to compute the distance between coordinates (lat/long) using haversine formula and print results within .csv

I have a .csv file with 3 columns. The first column is titled Distance and it is empty. The second and third columns are titled Longitude and Latitude which contain coordinates, for example: ...
0
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1answer
66 views

How to insert long/lat value in postgis database in the form of Point(x,y)?

I am having some trouble in inserting long/lat in the form of point. Currently, I have array of long/lat value and which I want to store into database in the form of point. However, I am unable to ...
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0answers
34 views

2 Lat/Long Segments Defined By 4 Lat/Long Points - Calculate If They Intersect & How Far Along Segment They Do

I have 2 lat/long segments defined by lat and long end points. For example, I have Segment X (defined by A.lat, A.long and B.lat, B.long where A and B are end points) and similarly Segment Y (defined ...
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0answers
40 views

Lat/Long grid array 360x720 for ArcMap raster layer?

I have two files (global temperature and precipitation), both in a 360x720 grid array (latxlong) in a csv file. I'm trying to add this to ArcMap 10.1 so I can use it in raster format. I've added the ...
1
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1answer
82 views

Fastest way to query whether a multipolygon contains a single point

I have a multipolygon of geography type (multi_bounds) and a point. I'm trying to figure out the fastest way to query whether the multipolygon contains the point. In this case if the point is part of ...
4
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3answers
194 views

How to find accurate latitudes and longitudes data for cities?

I want to put the coordinates of cities in a spatial db and then find cities from a given city at some given distance. I am hoping these functions would be readily available in a spatial db like ...