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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453 views

Coordinates of image corners for ImageExtent in Openlayers 5?

It is possible to get the coordinates of the four corners of the image, given the center of the image coordinate? or the bottom left and upper right corners? Currently, I am center the map in the lat/...
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1answer
122 views

WorldClim bioclimatic data extraction in R: NAs obtained

I've been trying to extract bioclimatic variables from WorldClim based on a lat-long data frame. I've successfully obtained the RasterStack but when trying to extract the variables from a subset of ...
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Return corner coordinates of images after OpenDroneMap processing

I have images (with EXIF metadata) made by a drone relative to a particular place; having processed them with OpenDroneMap at this point I have an orthophoto with all the geolocated pixels. At this ...
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1answer
119 views

Minimum and maximum coordinates of a polygon in Earth engine

I have a Fusion table having shape-files of various districts of India and I am using this fusion table in Earth Engine code. var district = ee.FeatureCollection('ft:...
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1answer
1k 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 ...
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0answers
57 views

Limit custom tiles to certain extent in OpenLayers

I want to fit my custom tiles at a certain region. For example let's say i have custom tiles for a certain country (example: USA) and I am using OSM or anything at all. How do i make sure that my ...
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1answer
560 views

Getting coordinates of pixel from georeferenced drone photo?

I have a problem with geo-referenced photos from a DJI drone. I have the coordinates of the center of the photo and the metadata related to the photo and I would like to know how to go from a pixel to ...
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2answers
131 views

Converting projected coordinates for Botswana

I live in Botswana. How can I convert the coordinates they gave me on a lease? I think it is very old system they use. Google Maps do not accept the coordinates. and ?earthplane? web age is only for ...
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1answer
45 views

Defining point location at EPSG 4326 image

I am new in the field and I would like to ask which is the correct way to define a point location for an image with EPSG 4326 crs. I used QGIS software, and created a .csv file with the latitude - ...
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1answer
92 views

Extracting point data from EPSG 4326 image [closed]

I am new in the field. I am trying to extract remote sensing data from selected points. I am using a remote sensing image with CRS of EPSG:4326. I defined the points which I will extract data from by ...
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1answer
79 views

Land Surveyor Coordinates

I've received these coordinates from a land surveyor and no matter which converter I try or where I insert these coordinates. I really can't find them in Google Earth or any other map. If anyone ...
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3answers
368 views

Seeking shapefile from specific city? [closed]

Where can I find a shapefile from a specific city? I am looking from a shapefile from Valencia (Spain). I only find files from the entire country. I want a specific shapefile with some polygons ...
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Transform UTM 33 N to ETRS 89 ( epoch 2018.5)

I'm asked to convert coordinates from the WGS 84 UTM 33N system to the ETRS89 with epoch 2018.5. So from a projected to a geographic system. I have no idea how to start with this. I know UTM = ETRS ...
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120 views

How to create group of coordinates and check if a coordinate is within the group?

I am looking for a way to relate two or more types of open data from the Valencia Open data portal. This portal offer data like a traffic jam, noise, and air pollution. All these data have coordinates ...
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1answer
209 views

Formula for converting raw coordinates into lat/lon?

I am trying to create an app which consumes data from http://apigobiernoabiertortod.valencia.es/apirtod/datos/intensidad_tramos.json. The JSON files offer the coordinates for me. However, I cannot ...
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Why are the coordinates displayed in the status bar incorrect even though my vector data lines up with my basemap?

I am using the Quickmapservices plugin with a a Google satelite basemap so the project has is set to EPSG:3857 - WGS 84 / Pseudo-Mercator. My vector data, which is in EPSG:4326 - WGS 84 appears to ...
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1answer
37 views

Sensor Orientation (XYZF) to Lat/Long? triangulation required?

I have IAGA2002 data regarding Magnetic North, as read from Sensor Orientation (XYZF), documented here: https://www.ngdc.noaa.gov/IAGA/vdat/IAGA2002/iaga2002format.html Example data is: Format ...
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15 views

Retrieving which Polygon contains a point

I am using the ArcGIS Online and have a layer within a map. Within the layer I have several polygons. When I load the map via the com.esri.arcgisruntime library, I was able to load the polygons as ...
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1answer
53 views

Transform HTML area to GeoJSON

I have this file http://www.meteofrance.com/mf3-rpc-portlet/js/datas/zones_AVDEPT73.json where the "zone" field is put in an area HTML element (so does "shape"). I have a little script that takes the ...
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1answer
243 views

Converting Degrees Minutes Seconds to Decimal Degrees for coordinates?

I have a list of coordinates I'm trying to put into a csv and then convert to points in ArcMap. I tried converting them to decimal degrees because at first they appear to be in DMS. When I plotted the ...
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1answer
55 views

Calculate Coordinates on the Beeline between two Coordinates on a Spheroid/Ellipsoid (Earth)

I have two coordinates of locations on the earth and want to calculate points in between these two coordinates on the Beeline, for example the coordinate in the middle or at 10%. I am able to do this ...
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1answer
122 views

Calculating coordinates given a reference point and distance

I am using QGIS 3.6 and trying to calculate coordinates (lat&long) from a point given the distance. I have the lat&long for reference point and have the distance from the reference point. ...
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0answers
55 views

Getting minimum distance of points with scalable algorithm

I have a number of geographical coordinates with latitudes/longitudes: id | name | lat | lon 1 | New York | 40.730610 | 74.0060 2 | Philadelphia | 75.1652 | 39.9526 3 |...
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2answers
393 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:...
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58 views

Add geometry attributes (x y) in the lat long column using Python console in QGIS [duplicate]

I would like to add geometry attributes (x y) to my point layer using py console.I know it is possible to calculate using the field calculator syntax, but then it creates a new layer which I want to ...
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124 views

PostGIS vs shapefile vs geodatabase precision [closed]

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 "...
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23 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 ...
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1answer
255 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/...
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1answer
81 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 ...
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1answer
73 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 ...
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1answer
52 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... ...
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1answer
60 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,...
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0answers
15 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 : ...
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2answers
164 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 ...
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1answer
935 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 ...
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1answer
878 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 (...
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3answers
123 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 ...
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1answer
94 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/...
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2answers
780 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 ...
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0answers
128 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 ...
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0answers
374 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 ...
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1answer
124 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 ...
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0answers
108 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. ...
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0answers
33 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. ...
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0answers
379 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 ...
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3answers
168 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.
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0answers
125 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, ...
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1answer
518 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, ...
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3answers
334 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 ...
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1answer
140 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 ...

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