Questions tagged [latitude-longitude]

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

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QGIS geometry definition x field y field drop down menu not working?

I am trying to create contours with QGIS. This is my first time and I'm following this video: https://www.youtube.com/watch?v=L4Rp318vM1Y&ab_channel=Geocarto I got to 3:05 where I am to put the x ...
FirstTimerHelp's user avatar
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How to export all Latitude - Longitude values of each pixel included in the area covered by geometry at specific resolution? - Google Earth Engine

I am able to add a band of lat - lon in my image in google EE with the code: var imgwithlonlat = meanImage.addBands(ee.Image.pixelLonLat()); Now I want to store all these values in a list and export ...
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Create a global grid in kilometer in Python

What is the best way to create a regular squared global grid in kilometer ? Creating it in degrees is easy but i would like to specifiy the input mesh size in kilometers ? I was thinking using ...
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Doing high-fidelity trilateration in R [closed]

Is there a way to do high-fidelity trilateration in R (naturally, I'll be using latitudes and longitudes)? I'm not looking to solve a specific problem, but rather identify tools that are capable of ...
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What is the right projection to use? [closed]

I am working on an application which uses lat and lon coordinates. The coordinates I'm working with can be found all over the globe. For some reason I have to do some operations in meters, buffering ...
Magic Mushroom's user avatar
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Why are latitude not part of the UTM system?

I am trying to project long/lat coordinates to UTM in R (actually I have a script that works) but I'm curious about the zone argument. Here is the script I have. It uses the spTransformfunction from ...
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Finding latitude and longitude limits for a sub-region for CDS Copernicus Climate Data

In order to extract climate data from Copernicus, there's a Sub-region extraction section that allows one to extract data from a region within specific coordinate limits. I am trying to use the Sub-...
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Getting latitude and lontitude from TIF file using rasterio

I refer to link and want to get latitude and longitude from .tif file using rasterio. My code is the same as the answer: with rasterio.open(path) as src: band1 = src.read(1) print('...
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Spatial autocorrelation of car crashes and traffic safety complaints in python

I am admittedly new to spatial autocorrelation and I did this research myself so apologies if this is completely noob behavior. I am trying to determine if there is a correlation between the location ...
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How to find long/lat (in Python) from a GeoTIFF that does not have CRS

I have a GeoTIFF file that in Python the dimension is (9991,10439). I need to know the long/lat information for each pixel but the problem is the CRS is None for this file and when I try to create a ...
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How to make TIFF output file with coordinate reference system (CRS)

I am working on TIFF files to produce the median matrix for them, I am using the following Matlab code for that. How I can make the output as .tif while keeping the coordinate reference system (CRS)? ...
user232920's user avatar
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Set coordinates as default value

In PostGIS, how to set default value with st_x or st_y ? I want to populate automatically two fields with lon and lat when I create a point.
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Get multiple zipcode from each district latitude and longitude on Python

I am trying to create a column for Zipcode from Latitude and Longitude column. I have seen multiple answers in StackExchange, all are for creating one zipcode from zipcode latitude and longitude. But ...
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Latitude/longitude from PostGIS table with coordinates transformation not working

I have a PostGIS (PostgreSQL 13/PostGIS 3.1.1 on Debian 11.7) table with points in EPSG:6708, so it's plain coordinates (data from Northern Italy). I need to get lat/long coordinates, so I do: ...
Luca Pauluzzi's user avatar
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Selecting feature by coordinates from the Vector Tile Layer using PyQGIS

I have a vector tile layer in QGIS, loaded from: https://cdn.kadastr.live/tiles/maps/kadastr/land_polygons/{z}/{x}/{y}.pbf. How to select a single feature of this layer by coordinates, in PyQGIS? I ...
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What is a notation for a "diagonal" on a globe?

Is "diagonal" even the right word here? We have latitude and longitude to create a sort of grid and when combined make a point. Both latitude and longitude individually span a line around ...
groovenectar's user avatar
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Turning table with lat and long columns into point layer in QGIS

I have a table as a layer in QGIS. It includes two columns: "Lat" and "Long". I would like to use these as geometry columns. How would I do this without saving and reloading a ...
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Add admin levels to corresponding lat/long

I am fairly new in using GIS, I have a dataset with lat/long references, corresponding to points throughout the world. I would like to add the corresponding admin1,2 and 3 levels. I've been trying ...
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Converting UTM coordinates to lat/long

I have a dataframe which contains easting and northing columns from Sweden which cuts across 32 to 35 UTM zones library(oce) sweden_Utm_converted <- utm2lonlat(Sweden_MM$east, Sweden_MM$north, zone ...
Umeh Blessing's user avatar
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How to find the coodinates of a new bounding box from four circles present with known radius around the vertices of an existing bounding box [closed]

I have a bounding box which I have created. I know the lat lon of the four vertices of the box. On these vertices I have created a buffer circle of radius 10m and now I want to calculate a new ...
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Recenter projection of world map in QGIS [duplicate]

I'm a beginner in QGIS. I would like to use world maps with different longitudes in the centre for my geography lessons. I am trying to create world maps centred on different longitudes (others than ...
Ole Joerss's user avatar
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Calculating latitude and longtitude using yaw degree and distance

I have some drone videos and metadatas. I would like to find latitude and longtitude of center of image, if it is possible any point. To do this, I thought I can use altitude and pitch degree. Because ...
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Project EUMETSAT Geostationary Rapid-Scanning-Service Pixel to Lat/Lon

I've downloaded EUMETSAT's RSS product (rapid-scanning-service of the northern hemisphere) - I'm interested in band 9 (IR10.8) - and I can download them as .nat (native) file or GeoTiff. Whether I ...
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How can I consolidate / deduplicate processed AIS data from different stations?

Context I have received processed AIS data from different AIS receiver stations from which I need to construct trajectories for each vessel. The data has the following columns: timestamp vessel ID ...
Saaru Lindestøkke's user avatar
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Understanding Longitude

I am a software developer and I am building an app that involves working with Longitude and Latitude. I've been surfing the web to understand the subject well but still have some issues with it that I ...
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Converting .shp polygon from EPSG:4326 to EPSG:3857

GIS newbie at a loss for solutions here. I've drawn and mapped out a shapefile with 51 features in QGIS based on administrative region data which has been in EPSG:4326. I would now want to convert ...
eulinean's user avatar
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GPS lat/lons are off by about a mile

I have some old data from a flight that was done, it has a series of lat/lons for each datapoint. I've plotted these into Google Earth Pro and I can see that they are plotting about a mile west of ...
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Convert centroid data to lat/long coordinates

I have a geoJSON file from Alameda County, California, that says it is based on "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:...
Zachary Russell Heineman's user avatar
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Lat/Long coordinates from measured depth

I have a set of perforation data along a well bore that just includes measured depth (in feet). I also have the directional survey for the same well that include survey points (measured depth in feet)...
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Convert unit vector from body to ECEF coordinate system

I have an Android phone using local coordinate system as shown on the picture: "Азимут" is azimuth. "Угол места" is elevation. "Крен" is roll. Azimuth is measured from ...
Maxim's user avatar
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Converting coordinates from cartesian to geodetic in QGIS

I have a problem with my layer attributes in QGIS, every time I add $x and $y coordinates as attributes, they are always returned to me in meters, while I would need this data expressed in degrees. I ...
Luke's user avatar
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How can I found all db table records within radius JSON field in PostGIS database

I have table polygon_versions with geo_json field of type json. DB fiddle: https://dbfiddle.uk/mzsp-4tg How can I select all table polygon_versions records within radius of 20 kilometers from geometry ...
Taras's user avatar
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Importing latitude and longitude data for UK

Data I have a set of locations for weather stations (download easily from here: https://archive.ceda.ac.uk/cgi-bin/midas_stations/search_by_county.cgi.py?county=SHROPSHIRE&minyear=&maxyear=). ...
Melanie Baker's user avatar
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Get height above ellipsoid (HAE) of the surface of the Earth given a lat,lon coordinate?

I am looking for a way to compute the approximate HAE (height above ellipsoid of WGS84) of a point at the surface of the Earth at a specific latitude and longitude. Is there a simple way to get this ...
Lelouch's user avatar
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Use Georeferencer GDAL plugin on QGIS to create a GeoTIFF if the latitude and longitude boundaries are known for a raster image

What I have/know: I know the latitude and longitude boundaries for an image I am using the EPSG:4326 projection QGIS with the Georeferencer GDAL Plugin Installed Is it possible to create the ...
Douglas.Sesar's user avatar
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215 views

Negative Easting while converting long/lat to UTM zone

I have a dataset of some points in python which have longitude and latitude for each of them. Because they are located in different UTM zones, when I want to convert them to UTM, I will get some ...
user220559's user avatar
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QGIS - Setting out a grid of points within a predefined area and giving them specific lat/long values

I'm basically re-learning GIS on the job, so forgive me for any inaccurate terminology or methodology etc. I will try to be as clear and concise as possible. I will be collecting the lat/long values ...
LIam's user avatar
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How can I get the longitude and latitude of a specified pixel (e.g. equal to certain value) with Google Earth Engine?

I want to get the longitude and latitude of a specified pixel (e.g. equal to a certain value) using Google Earth Engine. In other words, I have used "ee.Reducer.min()" to get the minimum ...
ComeTr-2097's user avatar
1 vote
1 answer
129 views

Converting coordinates from Google Maps using QGIS

I have been sent a spreadsheet with coordinates that are linked to Google Maps, for example: https://www.google.com/maps/place/53%C2%B018'27.0%22N+4%C2%B037'43.6%22W/@53.307487,-4.6309757,17z/data=!...
Alex Ross's user avatar
2 votes
1 answer
198 views

Dividing a map into zones based on latitude

I'm new to QGIS and I'm trying to divide a map of the world based on latitude. The final result, I need a shapefile or a raster file where multiple zones are created based on latitudinal zones. Is ...
Nuwi's user avatar
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Calculate UTM grid convergence using UTM coordinates

What would be the simplest way to arrive at a value for UTM grid convergence for a point given in UTM coordinates? All advice I can find requires that the point be given in latitude/longitude. For ...
krock's user avatar
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How to find the standard deviation in GPS measurement of latitude and longitude?

Let's say my GPS configuration is said to have a precision of 10 meters. I have taken this as the standard deviation in the GPS measurements. But the measurements that come from GPS are latitude, ...
rohit kumar singh's user avatar
1 vote
1 answer
133 views

Geotools unable to transform EPSG:5359 to EPSG:4326 , returns NAN for coordinates

I am using geotools to transform a set of point in chile EPSG:5359 to world EPSG:4326 I am using below code transform("6884327.77", "447076.76"); static Coordinate transform(...
Vaibhav Kumar's user avatar
1 vote
1 answer
445 views

Calculate poygon area in km2 from degrees to km2 in R

I found this but I think it is possible. I am trying to calculate the area in Km2 of a polygon given by the vertices in degrees: library(pracma) x= c(-40.03953, -44.24278, -40.90583, -35.55361) #those ...
João Vieira's user avatar
5 votes
1 answer
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Creating square polygon around center of the point using Python

How do I create a square polygon using center of the point (lat/lon) 25 kilometers (KM) by sides? I am not looking for a radius i.e. buffer. Here I am creating edges of 25 KM from the center point ...
sharp's user avatar
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What coordinate system uses three places for decimal minutes for longitude values?

I have data from a navigation unit that is reporting coordinates where the latitude is in a familiar decimal minutes format (e.g., 26° 14.12345’) that never has the number of places (I,e., the 14 in ...
New2This's user avatar
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3 answers
720 views

Creating geometry from lat/lon column using Python

I used the code: import geopandas as gpd geom = gpd.points_from_xy(dat['lon'], dat['lat'], crs=4326) dat = gpd.GeoDataFrame(data=dat[['value']], geometry=geom) but I receive the error: CRSError: ...
Julius Bamah's user avatar
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223 views

Radius in nn2() in RANN package

I was trying to use the solution offered here to find all the location from df which are within the 70 km distance from my point of interest userLocation=c(6.9,55,2), but it does not work properly. ...
Haribo's user avatar
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How can I convert the GPS coordinate to find local geographic longitude, lambda?

Let's say I have a coordinate of 59.3536 N, 18.0578 E. How can I calculate lambda (local geographic longitude) from the given value to calculate solar time? ST = LT - 4 * (15deg - lambda) + ET where ...
Faisal Ahmed Moshiur's user avatar
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1 answer
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QGIS Y-Axis grid repeating values

I've set up a grid on a map in print layout. The X-axis labels are working correctly but the y axis is repeating the results: The options selected are shown in the following two photos:
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