Questions tagged [latitude-longitude]
Angular geographic coordinates that specifying the north-south and east-west positions of locations.
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ST_Latitude and ST_Longitude functions do not return exact values in MySQL
I tried to collaborate on this question from the Stack Overflow site.
The ST_Latitude and ST_Longitude functions (equal ST_X and ST_Y) of MySQL (version 8.0.17) returns a non-exact value for certain ...
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1answer
55 views
Changing degrees to meters
I'm using QGIS 3.4.9. When I try to create a heatmap the only radius option is degrees. Can you tell me how to change this to meters?
2
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1answer
33 views
How can I count the number of countries my GPS data fall into?
I'm working with GPS data in R from different studies and would like to list the countries that each study covers. I can easily map the data using leaflet but I'm not sure how to extract the countries....
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2answers
50 views
Ignoring ellipsoidal heights recorded from GPS when only interested in location?
I am not interested in converting ellipsoidal height into AHD heights, because I have a good DEM. However, this whole business about geocentric vs geodesic coordinate systems is thoroughly confusing ...
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0answers
50 views
GeoPandas transform latitude/longitude coordinates to UTM coordinates
I have a shapefile which I read with GeoPandas, this shapefile has lat/long coordinates and I want to transform it to UTM coordinates.
I tried this:
shapefile = gpd.read_file('example.shp') #CRS = ...
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0answers
38 views
Mathematical rule to convert between degrees and centimeters based upon projection
I have some Tanzania drone imagery data in a local geographic projection EPSG:32737 that uses the unit of meters. Then I have other vector data that is in EPSG:4326 which is denominated in degrees. In ...
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1answer
41 views
Seeking ArcGIS Pro tool to get min and max latitude and longitude coordinates?
I am very new to ArcGIS Pro and have been struggling with getting the minimum and maximum latitude/longitude of an area in ArcGIS Pro. I am looking to get four coordinates of a rectangle that ...
2
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1answer
73 views
Longitude and latitude in aviation
I have two coordinates A = (60◦ N, 30◦ E) and B = (60◦ N, 150◦ E). I want to calculate the shortest possible route between these two points and also I want to know how far north does the route goes.
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1answer
37 views
Unable to convert coordinate format
I am trying to figure out the format of the coordinate pair below.
My task is to convert a list of these integer values into decimal degrees (below), but this is my only ground truth data point. ...
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0answers
36 views
Auto populating attribute table with lat and lon in QGIS
is there a simple way (without writing script or Python skills) to auto calculate and auto populate lat and lon attributes in QGIS?
When I manually add new points or move existing points in my layer,...
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2answers
149 views
Converting large data with lat and long into X and Y?
I have 9888562 records in dataframe and I would like to convert my lat, long to UTM x,y. according to my code, I have used pyproj package but because my data are too much it takes a long time and ...
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0answers
24 views
Do extra zeros change the coordinates for decimal degrees?
At my work we require contractors to submit work reports in decimal degrees with 6 decimal places, i.e. the location of where they paved roads or put in a road sign.
The question is, contractors have ...
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2answers
47 views
Calculate new coordinate based on distance traveled between two other coordinates
We have two coordinates (latitude, longitude) and let's assume we want to travel along a straight line between them. After traveling a certain distance along this line, we would like to calculate a ...
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0answers
32 views
Converting latitude/longitude into a slab number (or item number) and vice versa?
Purpose: To compress the data transmission for the longitude and the latitude. Initially these datas are in the form DD.MM.mmmm: degrees, minutes, ten thousandths of a minute. Latitude stands under 28 ...
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0answers
58 views
Calculating direction for points (lon/lat) in a perfect circle (shape) north of equator?
I have perfect circles in lon/lat on a OpenLayers map.
Near the Equator I locate each point on the circle using bearing-calculation for each point from circle-center. Meaning there are 360 bearings ...
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0answers
49 views
Move polygon to new location (find new lat-lng coordinates)
I need to move my polygon (region of geographical area) with 4 different (O1, O2, O3 and O4) lat-lng coordinates (as shown in the figure) to another place, so that I get new values of all 4 lat-lng ...
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0answers
81 views
NotImplementedError: Wrong number or type of arguments for overloaded function 'CoordinateTransformation_TransformPoint'
Hello I am new to working with GeoTiff data and I am trying to grab lat/lon values from a tiff image. Here is my code:
import gdal
import matplotlib.pyplot as plt
import osr
# open the dataset and ...
2
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2answers
124 views
Get latitude and longitude differences by clicking in two locations on the map
Is it possible in QGIS 3.x to click in two places on the map and to get back the X and Y distances between these two locations (latitude and longitude differences).
I was hoping there is a plugin ...
2
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1answer
101 views
Get coordinates from EXIF
I wonder if it is possible to know if with the EXIF data of a photo you can get the angle with respect to x or y (latitude or longitude) to position it on a map. Or given the EXIF data to ...
3
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1answer
62 views
Creating 1 hectare Polygons given latitude longitude in Python
I'm trying to work with openweathermap's Agromonitoring API.
To use their API you have to create polygons representing your area, then you can request weather data, soil moisture etc for that ...
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2answers
101 views
Converting GOES x,y coordinates from a 2D fixed grid into latitude and longitude
I am working with some GOES data in Python and I want to grab latitude/longitude coordinates from the data. GOES' stores their projection data in radians under x,y variables that are used to project ...
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2answers
212 views
Extract Latitude/Longitude from polygon vertices on QGIS
Created a global map by adding the OpenStreetMap and WorldMap layers in QGIS. Drew polygons over that, creating what I believe is a polygon layer.
I've also created a layer of the Nodes/Vertices of ...
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1answer
151 views
Getting latitudes and longitudes in between start and end coordinates and spaced at equal distance
I have a csv file which has the latitude and longitudes values , I need to find the coordinates in between the start and the end latitude and longitude which must be equally spaced at the interval of ...
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1answer
131 views
Find in between coordinates for the given latitude and longitude from a CSV file
I have a CSV file which has the latitude and longitude values for the start and the end coordinates as follows. In these the first lon and lat values are the start point then the second coordinates ...
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1answer
73 views
Get Row/Column of Latitude/Longitude
I downloaded Sentinel-2 Imagery from AWS & I'm using rasterio to read/manipulate the data. I want to find the row/column coordinate of a latitude/longitude point that I initially used to search ...
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1answer
115 views
Meaning of abbreviation BLH?
I cannot find anywhere why BLH (where B is geographical latitude, L geographical longitude and H is elliposidal height) is called BLH.
The origin of the letter H is clear, but what about B and L?
...
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0answers
40 views
Calculating latitude and longitude fields using PostGIS? [duplicate]
I have a shape in PostGIS that has 2,658,061 records (points).
I need to create a field that is called "Latitude" and another that is called "longitude" and calculate a position in WGS84 (SRID: 4326)...
2
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1answer
148 views
Getting different resolution between horizontal/vertical directions, from lon/lat to openlayers map?
I draw several points of Lon/Lat(EPSG:4326) on the OpenStreetMap v 4.6.5 (EPSG:3857).
It seems like the distance between the points are closer in the Latitudinal direction then in the Longitudinal ...
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0answers
72 views
Shift a lat/lon coordinate based on a distance and direction?
I have a coordinate in (lat/lon). I want to find a new coordinate shifted from this point by 'x' meters in the direction given by a compass bearing (degrees). The distance offset I am hoping to ...
2
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2answers
151 views
pyproj EPSG:4326 converts degrees to radians
Case
My input is a point given as x, y and an SRS name which specifies how to interpret the numbers. My goal is to convert these into lon, lat in degrees.
I convert this by using this piece of code:...
3
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1answer
101 views
How can I extract lat/long from GDB file in FME?
I have a large GDB database of points of interest across the world. I can open this up in FME and the data viewer works great in showing me the content in a way that is easily consumable. Despite all ...
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1answer
51 views
Seeking API/software tool that will return US state senate and state house district number for given latitude/longitude?
I have a bunch of addresses that I need to find the corresponding State Senate and State House district for their latitude and longitude.
It is possible to use shapefiles in QGIS to get this ...
0
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1answer
76 views
Converting lat long strings to xy linestrings [closed]
In PostGIS, I have a dataset with road segments including a column with coordinates for the various segments. The coordinates are in a lat-long format and the data type of the column is character ...
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3answers
116 views
Error in Converting XY Coordinates to Lat-Long Using r proj4 Library
I am trying to write a script that will allow my colleagues to easily convert XY coordinates into lat and long. The idea here is to take a spreadsheet with only X and Y available and create a new ...
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0answers
41 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 ...
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0answers
23 views
Clipping a raster by latitude and longitude extent in ArcMap
How do you clip a raster by latitude and longitude in ArcMap? I have a planetary DEM of Mars: The datum is D_Mars and the xy coordinate system is Equirectangular_Mars. I want to clip this raster ...
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0answers
27 views
Converting Degrees, Mintues, Seconds to X, Y to be plotted into ponts
I need to convert a longs list of Lat/Long (example: N42 30' 45" W122 38' 00") into X,Y data (42.5125, -122.633333) so I can plot it into point shapefile.
Is there a a way to convert multiple records ...
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0answers
41 views
Why does QGIS save EPSG:4326 as long, lat? [duplicate]
Why does QGIS save EPSG:4326 with coordinates in the longitude, latitude format? Isn't the correct standardized format latitude, longitude?
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0answers
519 views
Converting vector in NED to ECEF? [closed]
I have a geodetic WGS84 position, lat, lon, alt, and direction cosines from the same point, uN, uE, uD. I'm brand new to geodetic/ecef conventions. How do I take a vector (say, a unit vector with ...
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0answers
32 views
How to get geographic data of any particular region of map in Geometry datatype format in SQL Server? [closed]
I am completely new to Geometry datatype format of a Microsoft SQL Server database. DataType is Geometry. If not wrong, geographic data contains latitude and longitude of each point of that map, ...
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0answers
43 views
SAD69 conversion into latitude and longitude
I have an electricity distribution database in which the coordinates used are in the SAD69 system. I'd like to convert this data to longitude and latitude, but I do not find formulas anywhere. Could ...
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0answers
67 views
Transform ellipse representation from major/minor (meters) to degrees
I am given an ellipse represented by a quadruple (major, minor, center, azimuth) where major,minor are the ellips's axis length in meters, the center is the WGS84 coordinates of the ellipse's center ...
2
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1answer
236 views
List of lat-long, need values in a raster
Apologies in advance as I am not a GIS specialist by any means. I have a set of 1 million points and I'm trying to find their values in a geotiff raster. I've tried various versions of this answer ...
2
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1answer
82 views
Get weird result when calculating distance between two points, using latitude longitude?
I use algorithm (see: calculating distance between two points) to calculate distance between two points. but it get wrong result, see Java code:
/**
* group1：set latitude to 89
*/
// set ...
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0answers
27 views
Computing center and zoom level for a set of points
I need to duplicate google's static map image API api on an internal server with no internet access using OpenStreetMaps. I did find the OSM Wiki Page covering this topic. I initially looked at OSM ...
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1answer
178 views
Difference between SnakeGrid and latitude and longitude
I am not a geography subject expert and maybe my this comparison make no sense as i don't have enough knowledge (one of the reason to ask this question here).
I have a project where I am doing ...
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1answer
573 views
Latitude and longitude values in Google Takeout location history data sometimes out of range
I've exported my geolocation history data as a JSON from Google Takeout and the latitude/longitude values are out of normal range sometimes. It seems to happen for some locations only, while others ...
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0answers
20 views
Displaying Google Maps by Longitude Latitude Box
I want to display a certain area in google maps bounded by certain longitude/latitude. Meaning that I have 2 points (e.g. bottom left, top right) and this defines the area of the map.
I found parts ...
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1answer
366 views
Why is QGIS not recognising latitude and longitude correctly?
I am importing a simple 5 column csv file into QGIS using Add Delimited Text Layer.
Each row of the table contains a name, a street address, a postcode, a decimal latitude and a decimal longitude, for ...
2
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2answers
49 views
Get DD Lat and Lon from CRS EPSG:3111 - GDA94
I have a shapefile in CRS EPSG:3111 - GDA94 that I am trying to generate Lat and Lon, however when I use the field calculator and try to populate the lat lon I am getting values that I can't use as ...
