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 [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.

5
votes
0answers
82 views

PostGIS vs shapefile vs geodatabase precision [on hold]

How coordinates are stored in a PostgreSQL/PostGIS database? If not adjusted manually, is it "infinite"? Or up to some digits(15?). My question is the following: If I work in a PostGIS database with "...
0
votes
0answers
37 views

What system of plane coordinates to use in large areas (between two UTM zones)? [closed]

I need to use a plane coordinate system to accurately calculate areas of a Brazilian state (Goiás) that is between two UTM spindles (22 and 23), which flat coordinate system (EPSG) to use in QGIS / ...
0
votes
0answers
16 views

How to change coordinates units in WMS display?

I have strange case when reading the same map in two Firefox instances on the same computer. Seemingly everything is the same but in one view I have feet and in other degrees (lower left corner). The ...
0
votes
1answer
24 views

How to get WMTS tile coordinates?

What can I do with the given information: I don't know where I am in the World having some particular tile. It's only an ocean (or sea). "https://services.arcgisonline.com/ArcGIS/rest/services/...
1
vote
1answer
53 views

Points Plotted Without XY coordinates

I am currently trying to figure out how a set of points were plotted without full XY coordinates. I was given Y coordinates, but not X and there are points plotted on a map. I think these points were ...
2
votes
1answer
46 views

Extract midpoint coordinates from TIFFs (QGIS)

I have a large collection (>20000) of georeferenced satellite imagery tiles in TIFF format. Each of them has a size of 64x64 pixels. Is there a way to extract the lat/lon coordinates of the midpoint ...
-1
votes
1answer
49 views

What type of coordinates?

I was given homework to covert this to some location on planet earth. But I am unable to make sense over these numbers.... Tried various forms of coordinates representation but still no clue... ...
0
votes
1answer
36 views

Infering course given origin and destination coordinates

I have two points. A vehicle is at point A and I have the coordinates at point A. The vehicle moves to point B and I know the coordinates as well. I would like to find the angle of movement i.e., 0,...
1
vote
0answers
13 views

How to share custom coordinate in an atlas between pages? [closed]

I know we can build custom coordinate grid (cf. url:How to create a custom coordinate grid in the QGIS 2.14.2?). I would like to use this in an atlas but I have not succeded yet. I get Page 1 : ...
1
vote
2answers
36 views

Converting unknown coordinate (EPSG:3395?) to EPSG:3857

I'm attempting to convert a 7-digit coordinate of an unknown coordinate system I receive in this format: { lat: 4575651.267366762, lng: -9729851.06598594 } After a few hours of trial and error, I ...
3
votes
1answer
117 views

Extracting X and Y coordinates from .gpx file using QGIS?

I'm using QGIS 2.18.17 on Linux Mint 19. I have several .gpx files of waypoints recorded using a handheld GPS device. I can load them on to QGIS or Google Earth with no problems. However, I want to be ...
0
votes
0answers
19 views

Making polygons from coordinates

I am working on a project regarding the mapping of solar parks in the rural areas of my country, unfortunately, the data that I have, are in paper and printed topographic maps. So I need to make ...
1
vote
1answer
65 views

Openlayers 5: view and save coordinates from drawn feature

I've been following the various examples including this OpenLayers: Get Coordinates of drawn features and this https://openlayers.org/en/master/examples/snap.html and have produced the code below (...
1
vote
3answers
56 views

Switch coordinates in shapefiles

I got some shapefiles out of a WFS service and the points and polygons are not where they supposed to be. After taking a closer look in the data I came to the conclusion, that the X an Y coordinates ...
1
vote
1answer
28 views

How to change projection to lat long from eastings and northings, QGIS

I'm using QGIS and I'm trying to get the coordinate system into lat/long instead of eastings/northings. I think I'm choosing the correct coordinate system, but my "Extent" is listed in eastings/...
0
votes
0answers
18 views

Reading coordinates from Well Drillers Report from 1950?

I have a location of a point in this format from 1950. How can I convert them to put them on ArcMap in NAD_1983_StatePlane_Nevada_ast_FIPS_2701 Feet?
1
vote
2answers
65 views

Rounding coordinates to 5 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
0answers
26 views

On the fly projection of raster images no longer works in QGIS 3.6.1

For years I have created QGIS projects from Shapefiles using ESRI County Coordinate prj files. I have always been able to add aerial imagery from an ESRI ARCGIS Online server or local server and the ...
1
vote
0answers
57 views

Calculating pixels coordinates from lat/lon

I'm trying to develop a WPS that would print maps to images and PDFs. I don't want to use Mapfish because of its limitations, and because of some customization I need to add to the printed maps. My ...
0
votes
1answer
51 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 ...
6
votes
0answers
85 views

Calculating viewing angle (2D) between polygons and points [closed]

I am looking for a solution to the following problem. I have several points (for example houses) and several polygons (eg forests). Seen from the houses, I can see the forests within a certain angle. ...
0
votes
0answers
32 views

Calculating a coordinate based on approximate distances from known locations [duplicate]

My goal is to calculate a position based on approximate distances from known nearby locations. The distance observations include inherent error. The number of known locations is often 12 or more. ...
2
votes
0answers
66 views

Intentionally offset GPS coordinates using heading [closed]

Is there a known way of intentionally offsetting a latitude/longitude position by using a combination of the latitude/longitude and heading? I'm struggling to find any kind of answer or solution for ...
2
votes
3answers
62 views

Obtaining coordinates from center of grid squares (research tools)

I have a grid from research tools saved as shapefile. I want to display the center coordinate of each grid square in the attribute table.
0
votes
0answers
17 views

How to find coordinates of second point using distance and bearing from start point [duplicate]

I have WGS84 coordinates of start point (60.088244, 21.229361). The ship bearing is 231° (degrees) and it has moved 2.5 km. How to find coordinates where the ship has reached? (coordinates of the ...
1
vote
0answers
30 views

Problem of reversed coordinates (XY) when importing WFS data with st_read

This question was originally posted in StackOverflow. I am trying to use French spatial data distributed using WFS. I want to use these data in a Shiny app that allows the user to update the data, ...
2
votes
1answer
79 views

How to identify unknown coordinate type and convert to lat/lon?

I have some coordinates from an old Oracle database (AMANDA) and I don't recognize the format. For example, converting these coordinates: 3109020, 10114224 Should result in a point near latitude, ...
2
votes
3answers
37 views

Extracting coordinates of segments in raster from TIFF image?

I'm working with the attached tiff file and I am trying to extract the xy coordinates of the green lines. so far I saved the image as raster stack, and this specific image is from a layer of that ...
3
votes
1answer
34 views

Converting from custom projection northing/easting coords to lat/long in decimal degrees

I've got a custom projection file that's applied to all data (per request of a client), and another team is requesting ids/coordinate pairs for assets. I tried ripping out X/Y off the point data, but ...
3
votes
1answer
72 views

Get Lon / Lat of a top left corner for geometry in Google Earth Engine

I want to extract latitude and longitude of a top left corner of a bounding box (bbox) for my geometry (aoi). How do I do it in Earth Engine (preferably using server-side methods)? I guess, it ...
0
votes
1answer
47 views

Exporting full UTM coordinates

I want to export my point layer as CSV with the point coordinates as "xy", QGIS does the job quite well. One problem arises though, and that is that the Easting UTM coordinate is lacking the first two ...
1
vote
1answer
65 views

Intersection function returns multiple coordinates

I am trying to find intersection vertices of two polygons defined below PG = Polygon([(0.0,0.0), (0.0,4.0), (2.0, 0.0)]) QG = shapely.affinity.rotate(PG, 10.0, origin="centroid") print(PG....
0
votes
1answer
33 views

Find intersection vertices of two polygons

I have defined two polygons and I can find whether they intersect or not. I need to find the intersection vertices if they intersect or not ? How can I do that ? p1 = Polygon([(0,0), (1,1), (1,0)]) ...
-3
votes
1answer
27 views

Wanted coordinate grid [closed]

I am currently using the latest qgis and arcgis software and would like to know if someone can provide me the steps on how to create the following: 1.A blank drawing showing coordinate grid 500’x500’ ...
1
vote
1answer
83 views

Changing coordinates of points in the Attribute Table in QGIS

I have a shapefile. Within the shapefile, there are approximately 500 points. I want to change the coordinates of these points in the Attribute Table. But there is no coordinate column in Attribute ...
0
votes
0answers
40 views

Aligning Vector Data with Basemap in QGIS?

I have been having difficulty aligning my vector data (Suitable Polar Bear Den Habitat...) and the streams on the basemap. The vector data is offset slightly eastward. My hypothesis is this is a ...
1
vote
1answer
108 views

How to draw a line with OpenLayers by clicking two points?

I've got website with OpenLayers tile layer. I am trying to draw vector line on the map (only one segment between 2 points) on mouse click and to get coordinates of these two points. I read a lot on ...
-1
votes
1answer
80 views

Finding precision of polygon in Leaflet? [duplicate]

In order to convert coordinates to geohash I need to know the precision as well but unable to figure how to do so.. Any suggestions? ** EDIT ** What I try to do is to find the precision in leaflet ...
2
votes
1answer
69 views

What is WMTS' ScaleDenominator?

I am trying to write a program which will render tiles from EPSG2180-based WMTS server. Given coordinates of a point (WSG84 or EPSG2180, I can convert from one to another) I want to render a tile ...
3
votes
0answers
105 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 ...
2
votes
1answer
450 views

Creating square buffers around points using shapely? [duplicate]

I am trying to create square buffers around given points, I am able to create circular buffers but how do I create square ones? from shapely.ops import transform from shapely.geometry import Point ...
0
votes
1answer
40 views

Get coordinate value displayed at the buttom of qgis window with pyqgis [duplicate]

Does anyone know how I can get the coordinate value displayed at the buttom of the qgis window? I have been searching through the qgis api but am not able to find anything suitable..
1
vote
3answers
64 views

Calculating the shortest distance coordinate to vector layer

I want to calculate the nearest distance from each coordinate in a vector layer containing more than 17 000 coordinates to another vector layer. I tried the GRASS v.distance tool but it gives the ...
0
votes
1answer
57 views

Adding columns with easting and northing of points using ArcMap?

I've got LSOA dataset with centroids weighted by population. What I am trying to do is get coordinates of those points (centroids) so that I can then calculate distances to centroids outside of ArcMap ...
1
vote
1answer
67 views

View Angle Calculation

In Calculating View Angle? the accepted answer contains the following calculations: Given two points (x,y,z) and (x',y',z') in an earth-centered coordinate system, the vector from the first to the ...
-1
votes
1answer
29 views

Seeking New York Neighborhoods Boundaries?

I need a source of New York neighborhoods boundaries coordinates, I need to draw polygons around them just like this page is doing to Wingate, Brooklyn. https://www.exrny.com/listings/121719/2-bed-in-...
1
vote
1answer
49 views

Converting Point Feature to Latitude/Longitude Coordinate and GPX?

I drew a point feature using the draw tool in ArcMap on a map in an area of interest. I am now interested in extracting the actual latitude/longitude of this point in geographic space so I can ...
0
votes
0answers
19 views

Separate interstate and non-interstate roads from a given route

I have direction steps from city A to city B (obtained from Google Directions API). I need to differentiate the interstate road distances from non-interstate distances in the route. Google ...
1
vote
2answers
76 views

QGIS: How to store the GPS coordinates in the attribute table? [duplicate]

I got vector points on a map. I already have the elevation information in the table for each vector point and the point-id. Now I want to get the GPS coordinates for each point stored in this ...
2
votes
1answer
53 views

Excel co-ordinate file to polygon shapefile

So I am making a map of fishing intensity. Currently, I have an excel table with the mid-latitude and mid-longitude for each of my intensity data points. I also have the c squared value for each point ...