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

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10 views

georeferencing envi data with lat/lon in arcmap

I need to georeference gridded ENVI files or rather add georeferencing to the metadata. I do have the lat/lon of the corner points of the data and the spatial resolution. Any suggestions of how to put ...
1
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0answers
12 views

project hdf file with geolocation_lat and lon in batch process

Is there any way that I can do a batch process in projecting hdf file/s wherein I could get and include only the geolocation_lat and lon in the batch script since every hdf file have different geoloc ...
0
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0answers
26 views

Trying to convert GPS LatLng Android coordinates to use in ArcGIS rest - esriMeters

I am getting the LAT and LNG position from Android. Both values are of type double, in Degrees. For example: NY, USA Latitude: 40.7142700 Longitude: -74.0059700 Then I have a service ArcGIS REST. It ...
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2answers
58 views

How to overlay a Lat/Long CSV and NAD83 Shapefile in QGIS?

For reference I am new (as in a few hours of messing around) to GIS. I have a shape file/accompany projection files ect: CURRENT.prj CURRENT.shx CURRENT.shp CURRENT.dbf CURRENT.sbx CURRENT.sbn I ...
2
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0answers
28 views

Project location on a (great circle) path

I've been searching this SE site for quite a few hours now, and I'm still struggling to find a solution to my question. My goal is that given a way in OSM and my location (lat/lon coordinates), I want ...
3
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1answer
55 views

System of units for latitude, longitude

Let us say that I would like to store latitudes and longitudes like this: lat 35 degree long 80 degree Which system of units does the unit 'degree' belong to? It is not really a SI unit nor a ...
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0answers
19 views

Batch processing many addresses into lat/long? [closed]

For work I have on the order of a million or so addresses in a particular part of the country in a .csv that need to be converted to lat/long coordinates. Is this possible in a reasonable time frame? ...
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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 ...
1
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1answer
31 views

latitude longitude into corresponding location in a image [closed]

I have an image , some data on this image, some data on the camera that took that image and a piece of code. And i'm trying to find the location (Px,Py) in the image from (lat,lon). my problem is ...
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0answers
33 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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1answer
14 views

Latitudes and Longitudes in Atlas

I have seen some Atlases and Maps where North or South or plus(+) for North or minus(-) for south is not mentioned/suffixed with the degrees of Latitudes in the graticules. Is it correct? How will a ...
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23 views

finding circumcenter of circle assuming 3 geo points on circumference (lat/long)

Situation: I have 3 geo points (lat/long). I have to draw a circle on a map where these 3 points are "sitting" on a circle circumference (max-distance from point to point = 500 Meters). So I need to ...
2
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1answer
71 views

Calculate longitude length in miles

Suppose I have geographic coordinates of "Saratoga, California, USA" as Latitude: 37°15.8298′ N Longitude: 122° 1.3806′ W I know from here that in case of latitude 1° ≈ 69 miles and that ...
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0answers
67 views

Change SHP Projection to display on Google Map

I'm pretty new to GIS but not to programming, so sorry if this was already asked. I didn't find a solution not sure if I didn't quite understand everything about Projections and so on. I have a GIS ...
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1answer
35 views

Connecting two individual long/lat points using CartoDB?

I've created maps using CartoDB before, but my newest project is a little more advanced. I've imported a dataset of tornado tracks on a particular day using Storm Prediction Center data. --> ...
3
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2answers
80 views

Can't export customer's shapefile to latitude and longitude

I'm very new to this application so bear with me. I hope that I am missing something very elementary. I have a shapefile supplied by my customer. I need to get the latitude and longitude for each ...
7
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3answers
1k views

Is there a name for 0,0?

Is there a name for the latitude/longitude pair 0,0? On a graph, (0,0) is referred to as the "origin" but I'm not sure if that term also applies to the location 0,0 in cartography.
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0answers
20 views

Pointers to open source C/C++ code for converting Lat/Lon data into geo-spatial indices in a triangular or hexagonal grid?

I have a streaming data application which needs equal area geo-spatial indexing of input Lat/Lon observational data for locality of referencing. From reading, it would seem that a triangular or ...
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1answer
27 views

How do I get a set of lat/lon points into OSMAND?

I have a lat/lon points that I want to get into OSMAnd. What format do I need to put this in?
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1answer
59 views

Want a good database that has precise location coordinates (longitude & latitude) [closed]

I am searching for a good Excel spreadsheet database in tabular form that has the following: 1) It can be related to anything, eg. monuments of a country, tourist places, wildlife, cities; anything ...
1
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2answers
127 views

Getting latitude and longitude raster from DEM

Could anyone please provide with a way to calculate latitude and longitude from DEM, for each raster cell? In previous posts about this, I have seen that some suggest calculating lat and long in ...
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1answer
48 views

How to create buffer around point having projection 4326

I am trying to create buffer (in meters) around point(long lat alt) which is in projection 4326 with below code. But it is not giving expected output. SELECT ...
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0answers
27 views

Calculating position in SRTM grid

I'm actually trying to calculate a grid point position in a SRTM grid by row and column count. So I got a position by lat/lon, then calculating the row and column in my hgt-file (this post helped me) ...
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1answer
50 views

Analyzing long lat location data to find locations in proximity

I am looking for a tool to analyze location data (long lat values from vehicle GPS available). The goal is to identify locations which are in close proximity (within a circle of 30-60ft) and then ...
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2answers
72 views

convert points to same utm zone

I have lat/long and when I convert to UTM, my points are in zones 35 and 36. is it possible to "transform" or "project" (I am not sure which word is used to do this operation) the UTM coordinates from ...
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1answer
48 views

What lat/long formats can I use for a map data file

I can't find any clear documentation as to the formats allowed for lat/long in data files for cartoDB maps? Should Lat/long be in decimal form. Or as deg/min/sec? Or, geocoded lat/long? IOW is there ...
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0answers
19 views

liblas georeference las file and update header

I am just starting yo use liblas and I had a small issue and I am hoping that you can help me. I have next code to generate a las file with geo-referenced points: std::ofstream ofs; liblas::Header ...
2
votes
1answer
60 views

Convert shapefile to LonLat (R)

Just a small disclaimer: I don't have any background in cartography, hence I might have missed the answer to my question in search just because I didn't even know the keywords to look for. So, I am ...
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0answers
46 views

Geotransformation, from sat coordinates to Earth coordiantes

I'm using this code: https://github.com/mcidasv/mcidasv/blob/master/ucar/unidata/geoloc/projection/sat/GEOSTransform.java to retrieve longitude and latitude in Earth system from column, line ...
2
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3answers
185 views

How to get the latitude & longitude of the 4 corners of the Map being displayed.

I am working on Open Layer (ol3) and I want to get the Latitude, Longitude of the Corners of the map being shown at at point. I tried using map.getView().getProjection().getExtent() and converting the ...
5
votes
3answers
185 views

Grouping latitude and longitude coordinates by city neighborhood

I'm working on a model to predict whether craigslist apartment listings are over or under market value. I'm a complete novice with GIS. I have the lat and long as well as what neighborhood the author ...
0
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1answer
72 views

How much a decimal degree is equal to in latitude 40N?

I would like to learn how much a decimal degree equals to 40N latitude as units of distance. I have this table (http://en.wikipedia.org/wiki/Decimal_degrees) in mind, but I am interested for the ...
3
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2answers
97 views

Finding the boundary polygon from a set of gridded points (no hole)

Let us consider a set of a 2-D points (longitude, latitude) each of which is centre of square grid (intersect point of the diagonals of the square). I try to make you understand what I want to do in ...
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1answer
57 views

From what latitude can you only travel south? [closed]

From what latitude can you only travel south, and from what latitudes can you only travel north? This question is probably extremely easy and I'm just over thinking it. Some explanations would be ...
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0answers
29 views

Get Minimum bounds of 4 LatLon

I have 4 Lat Lon positions. They represent a (rotated) rectangular region. But due to some calculation errors, sometimes they are not proper rectangular. I want to convert those into (rotated) ...
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0answers
30 views

Get latlong at a distance on a path

I have 2 decimal point in lat/lon. I want to divide the line drawn by lat/lon into parts each at a specified distance, lets say 'x' -- all except the last segment will be of length x -- and I need the ...
2
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0answers
18 views

I have to fetch the subdivision categories using location coordinates

I'm looking for an API where I can get second level subdivision(ISO 3166-2) if I pass longitude and latitude. Second level subdivision code reference: http://en.wikipedia.org/wiki/ISO_3166-2:GB Eg. ...
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1answer
54 views

Transform lat,lng into x,y

I have coordinate system with x and y. Also I need to show there x,y point but I have coordinates latitude, longitude. How I can trasform latitude, logitude into x,y to show on x,y scale?
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46 views

Determine lat/lon intersection on earth from point in space along 3d line

I have a known point in space with a lat,lon,alt. It has a camera with a line of sight and a angle of field of view. I can take the central point and calculate each corner vector of the field of view, ...
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1answer
83 views

QGIS how to 'compare' points (latitude/longitude) w/address data (zip) to a zipcode boundaries shapefile

Hello my fellow GIS brethren, I am a geography major (gis) alumni who can't remember what he learned in college! It's been so long since I dealt with geospatial data and I can't remember the best ...
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1answer
77 views

ERROR 000989 Issue with Python Script and Field Calculating distance between two long lat points

very new to scripting and I have been struggling with my script for a while. I'm not sure why it doesn't work in field calculator. I am trying to calculate a list of distance between two long lat ...
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1answer
376 views

How to convert local Coordinates to lat/long Coordinates

I'm using QGIS to do some data analysis and visualization for my newspaper. I received some x,y coordinates from the City of Minneapolis that I can use to build some static graphical maps shaped like ...
0
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0answers
30 views

Understanding the error term

I have some (mobile) location data from a vendor. For each user and timestamp, there are three columns: lat, long, error. I "guess" that the error means that the user is located within a circle with ...
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0answers
31 views

Calculate geographic position based on azimuth, distance and height [duplicate]

How to calculate the geographic position of an object in sky (Point B)(like an aircraft) from Home Point (Point A) based on only four variables: Lattitude and Longitude at Home Point, Azimuth at ...
1
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1answer
65 views

NAD27 to NAD83, saving AFTER transformation?

I need to measure the distance (with the ruler) of points from two different layers. One layer is NAD83 and the other is NAD27. When importing the NAD27 csv file, I specified it was NAD27. Then I ...
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139 views

Why is longitude also written as B and latitude as k?

Why is longitude also written as B and latitude as k? I see that abbreviation when working with Google maps API.
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26 views

Given a date obtain latitude and longitude where is the sun zenith

Searching is easy to find terminator line (frontier between day and night) or the position of the sun in the sky given a position on the earth and a time; but I can't find how to obtain where is the ...
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1answer
206 views

Transform lat long to state plane coordinates

I am trying to convert a set of lat long to state plane coordinates using python and pyproj. The location is Tennessee and this gave me information about the central meridian, lat origin and the proj ...
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2answers
604 views

Equations to convert from global cartesian coordinates to geographic coordinates

First, I needed to convert geographic coordinates (like those received from GPS) to global cartesian coordinates. I found an earlier question (How do I calculate a xyz-position of a gps-position ...
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2answers
66 views

Finding latitude & longitude values for both ends of a road

I am looking for a way to find latitude and longitude values of both ends of any given road. So for example if there was a site or tool that did this, I would just have to provide a road name (and ...