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Questions tagged [coordinates]

Any of a set of two or more numbers used to determine the position of a point, line, curve, or plane in a space of a given dimension with respect to a system of lines or other fixed references.

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35 views

Trying to find zenith and azimuth angles to satellite

I am working with satellite data. Each scene is approximately 30km squared with 1024 * 1000 pixels. I have the zenith and azimuth angle for each of the four corners, plus the center. I have latitude ...
-1 votes
0 answers
24 views

Rotating a set of GPS coordinates around a point

I have little idea what GIS is, and I have no experience using it. However, this is a question I'm asking here because it seems like the best place for an answer. I have a land deed from 1971 ...
0 votes
0 answers
58 views

Python - How to spread out a set of coordinates so that they're not within 10 miles of each other?

I'm plotting a scatter map with plotly, and I have a lot of markers that are overlapping and very close to each other. This may be convoluted, but I'm trying to spread them apart by tweaking each ...
2 votes
4 answers
131 views

Reducing decimal places of coordinates in vector data using QGIS

I have polygon vector data, some of the polygons are imported from another 3D program (Agisoft Metashape). The imported polygons have up to 12 decimal places in the displayed coordinates (attribute ...
0 votes
0 answers
15 views

Absence of Excel number script coordinates

I have written the following script code and it has given me the monthly data of the annual growth of wheat from 2000 to 2023 in the form of graphs and Excel. Then I have added the slope of the ...
1 vote
1 answer
171 views

Autogenerating waypoints to GPX file with QGIS to find coordinates along route

Edit: I was able to figure out how to get the waypoints, I now need help with getting the coordinates for those waypoints in a CSV or JSON format. I am trying to get geo coordinates for every 0.1 km ...
0 votes
1 answer
162 views

Coordinates on Input app

I am using the Input app for QGIS (V. 3.18). Is there a way to show the coordinates of my location on the map?
7 votes
8 answers
7k views

Rounding coordinates to five decimals in GeoPandas

I have a shapefile, which I converted into GeoPandas DataFrame. I would like to round the coordinates to 5 decimals. Is there a method/function in GeoPandas that can do this? My shapefile contains ...
0 votes
1 answer
169 views

How to obtain coordinates of Sentinel-1 image

I’m a beginner in satellite image analysis. I want to know the lat/lon coordinates of some bursts of a sentinel-1 image. I looked at the file names of the downloaded zip, but couldn’t find any ...
1 vote
1 answer
45 views

QGIS using Geometry Generator to connect multiple points within a layer separately

I have a CSV layer containing roughly 50,000 individual point vectors of vessel tracking data. The attribute columns are date/time, latitude, longitude, vessel ID and vessel name. Some vessels have ...
0 votes
1 answer
84 views

Querying nested latitude and longitude fields in Opendatasoft API

I'm working with the Opendatasoft API, specifically accessing the "geonames-all-cities-with-a-population-1000@public" dataset. I need to perform queries based on the latitude and longitude, ...
1 vote
1 answer
422 views

Drawing a marker on a shapefile with the given latitude and longitude?

I am using shapefiles to draw a custom map. They were created successfully with the help of ArcGIS Desktop. Now I need to draw a marker on shapefile based on an existing tuple of lat, lng. How can I ...
1 vote
1 answer
1k views

Performing statistical test for two sets of points

(I have asked this question originally on Cross Validated; however, no good answer and someone suggested me to ask the question here). We know that we can perform statistical test (e.g., t-test) for ...
0 votes
1 answer
380 views

Creating coordinate points based on polygon

I am trying to create coordinate points based on a polygon that I've created in Google Maps and imported into R as an sf object. Specifically I have sample points of physical samples I've taken, but ...
2 votes
2 answers
69 views

Is there a method to sequentially label a collection of geographical points that follow a route with a changing direction?

I have a collection of geographical points (xy coordinates) looking like this: Collectively they follow a route with a changing direction. I am wondering if there is a way to calculate the order of ...
4 votes
1 answer
143 views

Getting vertices of UTM grid in PostGIS

I've downloaded from the official repository the UTM 5x5 km grid of Spain and uploaded it to a PostgreSQL/PostGIS database (vv. 14 & 3.1.4). I need to obtain the coordinates of every cell vertices,...
2 votes
1 answer
939 views

Calculating relative position between geocoordinates and distances

I am working on a Unity application and am using the Haversine formula to calculate the distance between two points. I know the overall distance + the distance along the latitude and longitude are ...
4 votes
1 answer
2k views

Extract derived data fields from Shapefiles

I've uploaded shapefiles with professionally supplied survey data into QGIS and it all plots fine, then when I export the attributes table into Excel I see that the XYZ values are all zeros. I know ...
6 votes
1 answer
997 views

Math formula to calculate GPS location for weighted GPS data points

I'm working to improve the location and accuracy of a map / data-point driven application. I have a collection of locations of interest. Each location of interest has a collection of data points that ...
3 votes
1 answer
322 views

Getting the first point's coordinates of column with type path

I have the table above CREATE TABLE public.geometry ( id serial not null primary key, distance float not null, height float not null, coordinates path not null, ...
0 votes
1 answer
1k views

Converting TotalStation native field data to coordinates

I'm trying to convert field data from an older Sokkia TotalStation machine, to coordinates. I've looked at Copan but as far as I can tell it doesn't support the file format. There are some outdated ...
0 votes
2 answers
3k views

Using R to convert British National Grid to/from WGS84 without creating spatial object

I have several million coordinates (which are either British National Grid or Long/Lat) and need to convert them. I know using R you can do this in a spatial operation (such as in my example below ...
1 vote
1 answer
2k views

LLA vs ECEF--which to choose?

I will be providing points in 3D to an external source via XML. One coworker suggests Lat/Long/Alt and another suggests ECEF. We can do either without much trouble. We have an existing product that ...
0 votes
0 answers
22 views

How do I show the right grid projection on my EPSG:4289 map/print layout?

I am trying to show the coordinates of my map (print layout) via a grid. However, I can not get it to work. I have tried multiple things: changing CRS, changing interval units, trial and error with X/...
0 votes
0 answers
34 views

Bounding box intersection when crossing date-line and meridian

First of all, I check for general intersections: public bool CheckOverlap(BoundingBox boundingBox) { if (this.UpperRight.Longitude < boundingBox.LowerLeft.Longitude) return ...
1 vote
2 answers
68 views

Getting all node coordinates of ways of one relation with Overpass

With overpass, I use CSV to create individual formatted output. All ways of a relation are determined. Here is the code: [out:csv("print1";false)]; ( relation(id:15596842); way(r); ) -> ....
3 votes
1 answer
479 views

Finding point within box using MongoDB?

Suppose the point has coordinates for a search within the box: (long:-155, lat:19) If we have the box: SW - (-170, 10), NE (29,69) that everything is fine and we can find this point because it's ...
0 votes
0 answers
15 views

gdal ogr transform c++ swaps axis order x to y [duplicate]

This is example #include "gdal/gdal.h" #include "gdal/ogr_spatialref.h" #include <iostream> void TransformBounds(double xmin, double ymin, double xmax, double ymax, ...
2 votes
1 answer
726 views

Converting local coordinates into global coordinates in QGIS

Since there aren't any georeferenced points on the site, we're creating a local grid using a few close locations as references as I use a total station to do some measuring. Aerial photographs can be ...
0 votes
1 answer
41 views

QGIS 3.28.11 add attribute table in Atlas

In QGIS 3.28, I created a project,it has 20 polygons in a .shp. Each polygon has a unique value with the header "code" in the attribute table. I extracted vertices and collect geometries and ...
1 vote
3 answers
4k views

Google Earth Engine: How to obtain coordinates of centroids of polygons of a FeatureCollection

I need to obtain coordinates (longitude, latitude) of the centroids of a FeatureCollection of polygons in Google Earth Engine. I would like to download the coordinates if possible. I am new to GEE and ...
8 votes
1 answer
6k views

How often does Google change geo-coordinates for given address?

I geocoded the address "50 Hurt Plaza Southeast, Atlanta, GA 30303" twice. Once on July 28th, 2014 when I got the coordinates: (33.754208, -84.387272) And again today, August 18th, 2014, and got ...
0 votes
1 answer
329 views

Extract coordinates out of list() in R (bbox) and get centroid of bbox

I have a data.frame with a column called geo. In this column, there are lists with coordinates that represent a bounding box. I would like to grab the coordinates that are inside each list and ...
1 vote
1 answer
2k views

Convert lat/lng to x/y pixel 2D PNG image

I have a 2D PNG map which I know the corners of my image and I also have the image size all as below: image size: 600x600 pixel top-right coordinate: (35.74706129,52.08012633) => (lat,long) ...
1 vote
1 answer
450 views

GPS distortion correction and coordinate adjustment

I was making a survey test and moving with a boat that was equipped with two different GPS systems. The position was recorded every 0.5 m. When I was evaluating the data I saw that from time to time ...
0 votes
3 answers
2k views

Adding Lat/Long Coordinates to Frame in Print Layout

I am still learning how to use QGIS: I am making a map of a location in Antarctica, so I am using WGS 84/Antarctic Polar Stereographic coordinates (EPSG:3031). I have put the map into a print layout ...
1 vote
1 answer
832 views

Euclidean Coordinates to Lat Long Based on Reference Location in Python

Goal Convert Euclidean Coordinates to Latitude and Longitude given the Latitude and Longitude of euclidean origin using Python. To give a sense of scale and accuracy for my application, the ...
3 votes
3 answers
186 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 ...
2 votes
3 answers
147 views

Getting xmin, xmax, ymin, ymax from grid in QGIS

I need to obtain the xmin, xmax, ymin, and ymax coordinates of grid cells, to precisely export each grid cell of a raster map to MBtiles. This grid was created and modified using GlobalMapper software....
0 votes
0 answers
39 views

geo coordinates to relative position on downloaded satellite image

I have a bounding box coordinates that I use to download the satellite image from Bing. I have polygon coordinates inside the previous bounding box. Is it possible to get the corresponding polygon ...
0 votes
1 answer
321 views

Cursor coordinates in ArcGIS Online

I use the coordinate widget in ArcGIS Online. I then get the coordinates when clicking in the map. Is it possible to get the coordinates "real-time" when moving the cursor?
1 vote
1 answer
32 views

Programmaticaly get coordinates of area symbol in OSM

OpenStreetMap sometimes encodes buildings as areas - as closed ways instead of nodes. But still at some point in the map a symbol or a housenumber is placed. I want to get the coordinates of this ...
2 votes
2 answers
420 views

Exporting X,Y coordinates relative to reference point with QGIS

I have a number of points (grey points in attached picture) around a reference point (red point in picture). I need to export X,Y data corresponding to the horizontal and vertical distance in meters ...
0 votes
1 answer
191 views

Get coordinates of .pbf/.osm of ways and relations directly?

Is there a tool for pbf or osm files so that I can see the coordinates of ways and relations directly? Currently ways have only references to nodes. So if I want to have the coordinates of a way, I ...
6 votes
2 answers
4k views

What does coordinate system WG 21° mean?

I have a land survey document for a piece of land, it contains absolute coordinates that I would like to locate on google maps, but I don't know how to correctly interpret the data. What does the "...
0 votes
0 answers
48 views

Importing CSV in QGIS results in inverted Y coordinates

I recently did a surveying job using 2 Emlid Reach M2 receivers (a base and a rover). All points were taken using the NAD83 MTM 7 projection. When I try to import a CSV file in QGIS, the Y coordinates ...
4 votes
2 answers
1k views

Decode Google Polylines in JS

I am a complete novice at coding and am trying to return a decoded polyline in array of (lat;lng) from an encoded polyline string. I found a similar post here Converting encoded polylines into GeoJSON ...
0 votes
2 answers
2k views

Unable to dynamically locate map boundary coordinates in OSM/Leaflet

I have been trying for the past hour to take the coordinates of the map edge in a OSM/leaflet application I am making. While I can get the coordinates of the center, and I can get the coordinates of ...
2 votes
1 answer
474 views

Why does the right side coordinate does not appear?

I was working on QGIS 3.28 and the CRS is WGS 1984 Web Mercator. Apparently my right side coordinate doesn't appear in scale 1:750.000. But it appears when I change the scale to 1:2.000.000 or above. ...
0 votes
1 answer
32 views

Coordinate format and conversion [closed]

I'm new to GIS and I have a question that I hope you'll be able to help me with. I have a set of coordinates I obtained from a paper, that look like this: S 00.67455, W 76.39837; N 00.18166, W 78....

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