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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QGIS: Custom formatting coordinate grid to reduce number of decimals

I am making a coordinate grid system of a map I have made, but now I would like to reduce the number of decimals of the seconds (of the latitude and longitude). So instead of 36°54'0.000"E -> ...
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Merging XY coordinate table to shapefile data using ArcGIS Pro

I am new to ArcGIS Pro. My situation is as follows: I have a shapefile that contains some data for some variables for different block groups. What I require is the data for those variables for some ...
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Random coordinates need to move little right

I have amcharts map which shows circle on it. I have few records(nearly 200) which do not have locations. These records(circle) I am showing in the map in Sea so that those records clearly will be ...
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Selecting attributes by coordinates from DataFrame in Python

I wonder how to return the right information needed from this df. Currently I get an empty return. I think the problem is my selection because the coordinates are correct and all variables are as well....
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Convert Mapinfo files into KML files, to check if coordinates are inside a polygon

Sorry for my absolute ignorance, I have 1 day of experience in GIS systems (I'm just a Java developer). Our client did provide us a compressed file with huge .TAB, .MAP, .ID, and .MAP files, and wants ...
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Loop through coordinates, adding a marker to the map for each using HERE maps

I am trying to add a number of markers to my map, using HERE maps API. I have my coordinates in a list, and there are 30+ pairs. var coords = [[60.1697768639186, 24.82923586371288], [60....
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Creating grid in QGIS 'anchored' to specific point

I need to create grids using QGIS with specific intervals 'anchored' to, or beginning at, a specific UTM coordinate. This is for a survey sampling procedure. For example: a point was determined - UTM ...
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Exchange of coordinates in GeoPandas

I was plotting some points with the plot function in GeoPandas. I realized that when I plotted using Point.lat, Point.long, the points didn't fall at the right place but when I exchanged the ...
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Understanding “create-grid” output and getting grid points' coordinates

I created the following grid points by using the "create grid" pluggin from the processing toolbox, then "Intersection" to clip from a mask. My idea was to calculate the ...
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2answers
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Calculating $area in project with multiple layers with different CRS in QGIS

I have a project with the CRS set to EPSG:31370. In this project there are a couple of layers, with a different CRS than the project CRS namely EPSG:4326 and EPSG:31370. Now I need to calculate the ...
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QGIS “invents” coordinate decimal places from imported PostGIS geom

I have a PostGIS database with an geom-accurancy of 9 decimal places for X and 8 decimal places for Y. Reading out the coordinates of an PostGIS-Polygon in PyQGIS shows: import psycopg2 conn = ...
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adding x and y into single column in QGIS

I have always use the field calculator to retrieve my x and y coords ($x, $y), but this ends up with 2 separate columns, which I then have to manually concatenate. Is there a way to do this easily ...
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Google Earth Engine Coordinates from Table

I am trying to import Table data into GEE. The original CSV file is at TERN Star Transects. I have followed the steps at GEE Importing Table Data (including making sure to specify either the x and y ...
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1answer
47 views

Convert xy Cartesian field in CSV file to shapefile with latitude and longitude field

I am trying to convert the CSV file that I have for a shapefile. The CSV file contains a Cartesian xy coordinate field that I wanted to convert to xy longitude and latitude field in the shapefile. I ...
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gdal_translate: unknown displacement after transformation

I am new to GDAL and after a lot of research I cannot find a solution to my problem. I want to extract a Scientific DataSet (SDS) from an HDF file, but when I do this with gdal_translate there is a ...
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1answer
69 views

Getting geo transforms (affine) without a TIFF reference image

I have a binary mask with buildings' footprints. What I have is a latitude and longitude of the center of my image and I want to georeference each polygon first. And here is what I have done before: ...
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Go to XY Coordinate is 1:40000

I am trying to use the "Go to XY Coordinate: tool. It used to zoom directly to the coordinates and now it is zooming to 1:38000. I am not sure why it has changed. Any ideas on how to fix it?
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Why are some maps shown with polar coordinates (azimuthal) and some Cartesian (cylindrical)

I am very new here, and in no way am I a cartography expert like all of you here. I am currently doing a math paper on map projections, and I have noticed that some projections (mainly azimuthal) are ...
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Get Lat Long coordinates from LiDAR .LAS 'Selected Point Attributes'

The third number for 'position' is accurate altitude, but how can I convert the first two to Lat/Long? Selected Point Attributes: position = 2237977.620 1354143.960 1460.720 intensity = 4 ...
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Access coordinates from a firebase database

I want to access the coordinates from a firebase database in order to add them to my web map. The structure of the data looks like this, and there around 12,000 sets of coordinates. In my python ...
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1answer
35 views

How to create polygon automatically with coordinates [duplicate]

I have some bunch of points in an area and I want to draw connecting lines with the help of points to create a closed polygon. But all these needs manual efforts. Can any one explain to me how to ...
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2answers
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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 ...
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1answer
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Calculate 500m south of coordinate in PostGIS

I have a point layer punkte_test. From that I want to make a line: first point of the line is the point A from the point layer itself. Second point of the line shall be y(B) = y(A) - 500 m . How can I ...
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How to format latitude and Longitude labels to show only degrees with suffix without any decimal or minutes?

I am setting my latitude and longitude labels in the QGIS map > map grid properties > draw coordinates > format but this only has decimal, decimal with suffix, degree minutes (w and w/o ...
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93 views

What coordinate system is this?

I have a spreadsheet with X, Y coordinates but I can't work out which format they are: X: 8582265.9675991 and Y: 239737.22394892 It should be roughly equal to these coordinates: 71.23'28"W 12.47'...
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QGIS coordinates not displaying correctly

Making my first Print in QGIS, and for some reason the coordinates are all over the place (see image). Does anyone know what would be causing this? All of my settings seem quite standard, I will post ...
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What does “¢” mean in a coordinate?

I'm looking at coordinate pairs defining Australian maritime boundaries. From here. The coordinate pairs look like this: AUS-CS-24 14°05¢09.4168²S 156°38¢26.5411²E ITRF2000 AUS-CS-25 14°05¢16.2817²S ...
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QGIS: Interactive cursor to know latitude and longitude in boundary layer (shapefile)

Is there a way of knowing the coordinates in a specific point of a shapefile (boundary layer/map of the country) in QGIS? Similar to what is done on Google Earth. As the cursor moves, the coordinates ...
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1answer
30 views

Project Tool without an exisiting Geographic transformation using ArcGIS Pro

I'm trying to insert a layer and in my project and while several other layers have been projected correctly on-the-fly by ArcGIS Pro, the final polygon layer is creating trouble. It slightly misfits ...
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1answer
23 views

Working with position data from 3DTiles

I'm currently implementing 3DTiles into my java application. I know that I will only work with the region BoundingVolume. The BoundingVolume has 6 values: west, south, east, north, minHeight and ...
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1answer
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Visualizing car speed data in ArcMap

I have gathered positional (Long and Lat) data and the corresponding speed of a vehicle over a specific route. I am able to plot the X-Y coordinates in ArcMap 10.7 over a basemap which essentially ...
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GPS tracking gives me wrong path

I am having trouble collecting GPS coordinates. In my case, I need to walk from point A to point B and collect the coordinates avoiding any obstacles. I used an android phone and mapmyrun app. When I ...
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1answer
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Distorted h3 hexagons using h3js with Mapbox

When a user clicks on a Mapbox streets-v11 map, I'm attempting to: Take the clicked point, and identify the h3 hexagon (at resolution 10) around the point Convert the hexagon coordinates into the ...
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1answer
392 views

Opening NetCDF file in QGIS with corresponding coordinate system

I have a NetCDF file with 3 variables: a 2D lat grid (degrees) a 2D lon grid (degrees) a 2D data grid I am having troubles opening this file in QGIS with its corresponding latitude and longitude ...
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1answer
37 views

Getting table of coordinates from polygon in QGIS

I would like to gather all of the GPS coordinates within a set area as a table to transfer it to Excel or sheets. I designed a rough shape of the area with the polygon tool in the layer and now im ...
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39 views

Python - Calculate image extent based on center coordinate, number of pixels and rotation angles

I have images with a center geo-coordinate and rotation angles in x- and y-direction. Now I want to georeference them by setting up a GeoTransform object. For non-rotated images, this is easy, using ...
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1answer
66 views

Plotting data with centroids only

I am fairly new to spatial analysis and I am trying to create a map of the spatial distribution of pollution in the UK using publicly available data retrieved from https://uk-air.defra.gov.uk/data/pcm-...
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Subdividing a GeoTIFF into 1x1 tiles of longitude and latitude?

I have a big GeoTIFF file of the whole Slovakia territory in 25m resolution. It has around 17700 x 8000 pixels. I need to subdivide it into smaller files and every file must have 1° longitude and 1°...
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How to find the furthest coordinates on a polygon in a given direction

My task is to generate a box that maps over the existing polygon, which I’ll call the level. What I’m doing is mapping buildings with geojson, which does so by using a set of lat/long coordinates as ...
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1answer
25 views

Get ISO 3166-2 Regions based on coordinates

I am looking for a way to get the ISO 3166-2 subdivisions based on latitude and longitude. For example JFK airport has the coordinates 40.6413° N, 73.7781° W. and the ISO 3166-2 code is US-NY. Is ...
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29 views

Coordinate transformation npm for X,Y and Z values

Is there any direct node parameter libraries (npm) available to convert the X, Y, and Z values from one coordinate system to another? And are there any other methods for this conversion?
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How convert AutoCAD coords WGS84 (Google Maps coords)?

I tried it on my own, but the coordinates are incorrect Here at the entrance 9877.662483,3764.885102 Here's what the output should be 55.755711228,37.558133244 var csFact = new CoordinateSystemFactory(...
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1answer
107 views

How can I get the coordinates of polygons drawn in Google Maps-My Maps?

I have a custom Google Maps using My Maps which has some polygons (around 18) and I would like to get the coordinates of each polygon without having to place markers on every corner. This is an ...
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22 views

Custom Map Projection from a set of coordinates (no transformation/parameters available)

I want to create a Custom Map Projection in QGIS without knowing any parameters for the transformation. My basis is a georeferenced raster image that contains a grid with coordinates from a local ...
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Creating matrices of coordinates for a given geoTIFF

I have GeoTIFFs that are in a given projection, I'm trying to figure out what the easiest way would be to produce corresponding matrices for the the GeoTIFFs that hold the lat, lon, and meters ...
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1answer
51 views

Determining the Coordinate system for set of points

I have the following set of points. X Y 618263.27 6153928.04 601343.35 6492627.09 670869.41 6448843.47 499463.38 6201245.29 569373.30374535 6140971.32153155 579069.9206 6142002.1728 587240....
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HIFLD Railroads DB contains coordinates that don't make sense

I downloaded the HIFLD Railroads DB and imported it into MySQL with OSGeo4W. I then do this query and the coordinates I get just don't make sense: SELECT ST_AsGeoJson(SHAPE) FROM railroads WHERE ...
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2answers
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Create point geometry in PostGIS from a X Y Z M coordinate format

I would like to get a PostGIS point table from a PostGreSQL table containing OpenDataKit data where the coordinates are contained into in a column in a X Y Z M format (M being I think the value of the ...
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2answers
71 views

Why is the following CSV file not being loaded as a points layer in QGIS?

I've been trying to add a certain CSV file as a points layer to QGIS for a while now, without much success. It can be viewed over here. (It was adapted from this .xls data file). In the online ...
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307 views

Determining CRS from given point coordinate set

I have a set of coordinates (X, Y) and I do not know which coordinate system they are actually in. They are definitely in a projected coordinate system since they are not in decimal degrees. However, ...

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