Questions tagged [latitude-longitude]
Angular geographic coordinates that specifying the north-south and east-west positions of locations.
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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 ...
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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 ...
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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 ...
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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
...
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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 ...
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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:...
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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 ...
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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 ...
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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 ...
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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=).
...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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=!...
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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 ...
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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 ...
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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, ...
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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(...
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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 ...
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From UTM to long/lat [duplicate]
I have a set of points expressed in the UTM zone 32N EPGS:32632 WGS84 and I would like to obtain long/lat expressed in -90/90 180/-180 degree.
Is there a way to obtain it with Qgis?
For instance:
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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 ...
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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 ...
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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: ...
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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.
...
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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 ...
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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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Understanding latitudes longitudes and angles
I am very new to geographic concepts.
I already know and understand the concepts of latitude and longitude.
What I am trying to find is the angle between two points having those points data.
First I ...
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Finding closest matching data between two 2D lat/lon arrays
Let's say I have two different lat/lon/data arrays with varying dimensions between the two sets of arrays. For example, lat1 has a spacing of 0.01 degrees of latitude, while lat2 has a varying spacing ...
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Exporting random points inside polygon as coordinates with lat/lon in QGIS
I have created a points layer in QGIS using Vector > Research Tools > Random Points Inside Polygon.
However, I would like to export the points as a GeoJSON file where each point has a coordinate ...
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Populating geom using lat/long or x/y
I'm having trouble populating a geometry (geom) column by using already existing columns (the data has an x, y, as well as lat, long columns) the 4 columns are in varchar. I have created the geometry ...
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Creating a spatial join for longitude/latitude data to areas on a base map
I have three different sets of data: The basemap (local authority wards), crime (recorded through longitude and latitude), population (recorded by local authority ward). I have already mapped the ...
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Find the distances between stores with Lat/Long Coordinates in Python
I have a SQL query that pulls the Lat/Long values of all stores.
How do I find the distances between all stores in the column that is returned from the query? Is that even possible?
First, I imported ...
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How is the XY error (m) for GCPs/checkpoints in Agisoft Metashape calculated?
I have a project in Metashape where I am using 8 GCPs and 1 checkpoint. The selected coordinate when importing GCP survey is WGS84 (EPSG::4326).
My school advisor, who is a GIS expert, but has limited ...
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Calculate raster cell area as function of latitude?
Raster used available here: https://www.dropbox.com/s/xn7hdll2op5zcc9/MAP_global.tif?dl=0.
INTRODUCTION:
The resolution of a raster is commonly related in degrees, e.g.:
library(raster)
r <- ...
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Latitude represented as a Matrix
I have some NetCDF data where I have a few variables
lat : dimensions - (x,y)
lon : dimensions - (x,y)
x : dimensions - (x,)
y : dimensions - (y,)
temp : dimensions - (year, y, x)
I am struggling a ...
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Create grid with equal spacings R from specific latitude and longitude
I would like to create a grid of 8 points with lat lons (2 x 4) each 200m apart using a specific point as the start, e.g., top left of the grid. My starting point is Latitude 51.83985301, Longitude 0....
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Missing address in OSM file
I downloaded a part of germany .osm file from geofabrik and extracted all ways and nodes whose tag contains addr-key using osmfilter:
osmfilter.exe hessen-latest.osm --keep=addr:*=* --drop-relations --...
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SQL Server: Coordinate conversion from NZTM to WGS84
I got a table that has shape value in one of the columns. I am converting shape value into geo_json formate and calculating centroid value and saving in two columns. The coordinate system of shape ...
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Problem with cartopy when a shapefile as lon > 180
I am trying to make a figure using a shapefile and cartopy.
When longitudes are in the range [-180,180] everything is working fine
When longitudes are in the range [0, 360] the shapefile is not ...
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PostGIS: given two points and the max distance in meters find if the two points are within that distance
Given latitude and longitide of two points I have to find if them are withing a given max distance in meter, I found this function:
https://postgis.net/docs/ST_DWithin.html
and I am using it in this ...
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