Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [latitude-longitude]

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

3
votes
0answers
250 views

How to take a set of geohashes and determine which ones are neighbors?

I'm trying to figure out the optimal way to take a list of geohashes and return a sub-list that contains the geohashes that are direct neighbors or have direct neighbors in common (aka - creating ...
3
votes
0answers
556 views

Converting KML coordinates to Leaflet

I am trying to convert a Google Map KML file to a csv, to map the longitude and latitude points on Leaflet. But the coordinates keep mis-projecting and some end up off the land mass. The steps I have ...
2
votes
0answers
74 views

Problems with latitude/longitude grid in QGIS 2

I try to produce a thematic map in QGIS, like this one done in MapInfo: I want to do this in QGIS. I work in projection "Albers-Siberia" projection ( PROJ.4: +proj=aea +lat_1=52 +lat_2=64 +lat_0=0 +...
2
votes
0answers
127 views

Weather data in rotating grid without time dimension or vertical dimension or CRS

I am a beginner using QGIS 2.18.15. I am having some trouble to find the right coordinate reference system for wind speed data of Europe from the German Weather forecast service (DWD). (ftp://ftp-...
2
votes
0answers
495 views

Using PROJ.4 to convert from 3D Cartesian ECEF coordinates to Lat/Long coordinates with inverse Icosahedral Snyder Equal Area (ISEA) projection

I have a set of X, Y, Z coordinates in the Earth Centered Earth Fixed (ECEF) geocentric system. I need to convert them from ECEF coordinates into Latitude/Longitude coordinates using an inverse ...
2
votes
0answers
79 views

NOAA Magnetic Field Component Grid Calculator Help

I am using NOAA's magnetic field component grid calculator trying to calculate the magnetic declination of the entire United States (here's the help page). Essentially, the link asks for a minimum ...
2
votes
0answers
221 views

Convert node data to lat/ long > DBF to CSV conversion

I have a DBF table with nodal data locating cycle injuries in Portland, OR. I'd like to convert the table to a .CSV. Transferring the attribute data isn't a problem, but I'd like to get lat/long ...
2
votes
0answers
221 views

Road Extraction from Latitude and Longitude

Google Maps API allows grabbing roads for individual latitude and longitude specifications (or the nearest roads if the point/s are not on a road). However, the way it requires data to be entered for ...
2
votes
0answers
385 views

Converting .adf raster from UTM to lat/long without UTM zones in R

I have an .adf file that I have opened in R with the raster package. It's data on the saturation levels of Aragonite on a global scale. When I plot the raster it looks okay. But I need the data in ...
2
votes
0answers
446 views

How to convert degree 2 utm in mysql?

This is my solution - I needed this as function, to use it in select-statement: CREATE DEFINER=`root`@`localhost` FUNCTION `deg2utm`(`lat` FLOAT, `lng` FLOAT, `utmzone` INT) RETURNS text CHARSET ...
2
votes
0answers
105 views

Is there a well-known way to compare the relative accuracy of 2 latitude/longitude results?

I have 2 geocoding results (in latitue and longitude) for a given address from different services. I'm interested in describing the results in relation to one another in terms of relative accuracy and ...
2
votes
0answers
550 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 ...
2
votes
0answers
136 views

project hdf file with geospatial_lat and lon in batch process

Is there any way that I can do a batch process in projecting hdf files wherein I could get and include only the geospatial_lat and lon in the batch script since every hdf file have different ...
2
votes
0answers
98 views

Fetching subdivision categories from GeoNames 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....
2
votes
0answers
1k views

Using gdal to convert from UTM to equidistant lat/lon

I am getting rather confused with converting a UTM gridded dataset into a equidistant/rectangular latlon gridded dataset. Can anybody help me? I have a UTM set with the following projection: PROJCS["...
2
votes
0answers
263 views

how to convert lat and longitude into distance near poles?

I am trying to convert latitude and longitude into meters in polar regions. I am looking for higher accuracy upto 0.00 meters preferably. I tried the haversine formula but it doesnt seem to be ...
1
vote
0answers
33 views

Determining which latitude and longitude values fall within township/district/polygons

Is it possible to export the boundaries of one layer, as well as the latitude and longitude falling within each boundary, from a program/by programming? I seem to have gotten fairly close to a ...
1
vote
0answers
35 views

How to perform reverse geocoding to custom area on the map?

I know there are services that perform reverse geocoding, given a pair of lat-long and return an approximate address, city, etc. The problem I have is that given a lat-long, I want to return the ...
1
vote
0answers
62 views

Visualizing signal strength of mobile towers

I have a list of latitude and longitude along with signal strength obtained from mobile towers in a certain region. I have all the data in CSV format. In total, I have 4 CSV files. I have mapped the ...
1
vote
0answers
139 views

Coordinates to Lat/Long Conversion

I'm trying to convert a GeoJSON Coordinates Point to latitude and longitude format, but I don't know exactly which is the format they have or which is the coordinate system they are expressed in. I ...
1
vote
0answers
112 views

Converting latitude/longitude to full range referential

I have a list of latitudes and longitudes expressed as follow: -1 <= latitude <= 0 0 <= longitude <= 1 Those coordinates represent POIs on a fantasy map displayed using the Leaflet ...
1
vote
0answers
101 views

Dimensions of images given their latitude and longitude for Google Earth Engine

From the point long: 16.499050771335575, lat: -30.882 I want to find the corresponding latitude and longitude values that would result in a 200 km by 200 km square in which the aforementioned ...
1
vote
0answers
106 views

Mapping pixel coordinates to lat lon

For a deep learning project, I trained a YOLO based model to detect objects on satellite images (from spacenet dataset; epsg:4326). However, as the Darknet only takes JPG/PNG images as input(to the ...
1
vote
0answers
213 views

Decimal degrees to meters in QGIS 3.03

I understand this question has been asked a few times but I am having trouble with this issue in QGIS 3.0.3. These are the current CRS of my layers: Open Street Map (XYZ Tile) - EPSG: 3857 - WGS 84/...
1
vote
0answers
517 views

Create Polygon - How do I bring a table in with Lat/long

I found the below code for creating a polygon. I know what a polygon is, but I'm confused about the code. I have my polygon points defined, but where do I bring my table in to match to the polygon lat/...
1
vote
0answers
103 views

How to create a csv with lat long coordinates from a WGS84 layer with Grass

This question seems trivial but I'm having trouble doing this simple task. I'm working on a WGS84 location in Grass 6.4 and I'm trying to convert a raster layer in a csv with lat long coordinates ...
1
vote
0answers
210 views

Coordinate problem with GPCC netcdf data and QGIS

I downloaded Global Precipitation Climatology Centre (GPCC) monthly precipitation data in netCDF format from here: https://www.esrl.noaa.gov/psd/data/gridded/data.gpcc.html According to the site, ...
1
vote
0answers
173 views

Problem with CSV to point shapefile

Using Qgis 2.18, I am trying to load a CSV file with a column for latitude and one for longitude. The points in the CSV are for England. When I load the file, the shapefile is created, but there is a ...
1
vote
0answers
427 views

Calculating a new Latitude & Longitude based on percentage

I'm trying to work out the best way to do the following: Given coordinates in decimal degress (e.g. [0.0, 0.0]), calculate a new position to "pan" to, based on a percentage. Let's say my chosen ...
1
vote
0answers
89 views

Plot large batch of points without coodinates or geocoding

I have a list of 50,000 addresses with no Lat/Lon data. I would like to plot these points over a boundaries shapefile. Most geocoding services limit you to 2,500 - 15,000 geocode without paying. Is ...
1
vote
0answers
63 views

netCDF data cut at prime meridian

I am quite new to GIS. I have two sources for my netCDF data. The spatial reference for both is GCS_WGS_1984. One of the rasters has a gap along the prime meridian as it appears in the picture below....
1
vote
0answers
258 views

Adding “monitor” layer with Access Database and coordinates x/y in QGIS?

I want to add a Microsoft Access "mdb" or "accdb" as vector layer. The layer should work all the time with current updated data from the Access file. This function allready exist for a txt(!) file: ...
1
vote
0answers
64 views

How find a given point is with in given distance to a route get from google map direction service

I have created a route with start point, end point and the optional stops points. I have to check if the given point is away with in a given distance from the route. I have to match the given points ...
1
vote
0answers
113 views

Calculate values of coordinates in more system coordinates in same time, using unique tool

I have a table with several points. The attributes contain 3 "types" of coordinates in the SIRGAS2000 datum (decimal, DMS and UTM). I want to calculate these coordinates with a tool, because it is ...
1
vote
0answers
168 views

ggmap with Gauss Krueger coordinates

I am using R for doing a map of groundwater levels which means I have some measurements at some coordinates in the Gauss-Krueger system and I interpolated between these measurements. I want to plot ...
1
vote
0answers
272 views

latitude longitude search in ALL state or county gis sites

I'm working in geography field now and using local gis sites for different states and counties. However, they all seem different, and it takes time to learn each new one as required. For example, ...
1
vote
0answers
1k views

How much is the error in physical longitude and lagitude (e.g. meters) corresponding to a +-0.0001 error in GPS coordinates?

If I have a device how give-me a latitude and longitude with 7 decimals (eg. -42.5124478, -22.3006726, longitude and latitude respectively ) and I round it to 4 decimals (eg. -42.5124, -22.3007). It ...
1
vote
0answers
463 views

How to show GPS latitude/longitude in input in Android application (webview)

I develop an Android application with jQuery Mobile 1.9, Cordova 2.4 ... I want to display the coordinate of GPS (lon,lat) in input like in the pictures, I'm tired with this code but it can't display ...
1
vote
0answers
67 views

Precision of marker being placed on polyline

I'm attempting to place a marker on a polyline between two lat/lngs at a given percentage. Now, I know I can do this with google maps, but I need to be able to calculate it in backend code and return ...
1
vote
0answers
31 views

How do I find whether a line is intersecting a circles with small radius on earth?

Algorithm mentioned in how-to-pick-up-line-segments-which-is-inside-or-intersect-a-circle seems to be working fine for circle with radius > 50 miles. But when coming to circles with radius < 50 ...
1
vote
0answers
281 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 ...
1
vote
0answers
184 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 ...
1
vote
0answers
298 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 ...
1
vote
0answers
116 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
vote
0answers
158 views

Where can I download a raster dataset with the latitude and longitude of each pixel in geographic projection?

I want to do raster calculations in QGIS based on the latitude and longitude of each pixel. The calculations will compute the area of the pixel, but also do other calculations for various projections ...
1
vote
0answers
769 views

How to project WRF data (lat/lon) onto ArcGIS maps

I have climate data generated using the WRF model, in lat/lon format (lambert conformal projection), in an Excel file. I'm looking to project / overlay this data onto a map of the UK using ArcGIS, ...
1
vote
0answers
195 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) ...
1
vote
0answers
137 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 ...
1
vote
0answers
1k 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, ...
1
vote
0answers
374 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.