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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Calculating Azimuth in QGIS Field Calculator
Is there any way to calculate the azimuth of two points in the QGIS Field Calculator? The coordinates are stored in an attribute table.
x1 | y1 | x2 | y2
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Updating coordinates and their point locations in ArcGIS Pro without creating a new feature class [duplicate]
I have a feature class with about 1,000 points in ArcGIS Pro. New survey data was received that changed the x,y coordinates of about 200 of these points. So, to update the x,y fields in the attribute ...
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Get coordinates from polygon points on MapBox draw?
This is the code I am using for polygon to draw and I am using MapBox GL draw I am trying to get longitude and latitude of every point from polygon.
var draw = new MapboxDraw({
...
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Adding coordinates to point feature with missing location
I have received some data from a third party that includes some point and line features that have no location information. I have the coordinates which I would like to use to provide that location ...
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Delete lines on the right of and under the longitude and latitude lines. (0° and 90°) in QGIS print layout
I am using QGIS. I only want the grid lines that have the coordinates 0° and 90°, and therefore need to delete the vertical line on the right and the horizontal line at the bottom. In the grid section ...
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Finding coordinates by Azimuth
I am working on a forest project. I have one central point (I know coordinates of it), than I have azimuth and distance of trees from this central point.
How can I find coordinates of trees?
p.s. ...
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proj4js with geocentric CRS
I am developing a little web app to transform coordinates between CRSs. To do that I am using proj4js, but I notice that proj4js can't work with geocentric CRSs.
Is there another tool similar to ...
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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 ...
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Generate coordinates with Minimum/Maximum distance from given coordinates
Background:
I am trying to create a coordinates generator for Unit Testing my code.
I would like to try to test cases for methods like:
// Check if within 10km.
// Should pass because it is 0 - 10km ...
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Height of the geoid in ECEF coordinates
I know that the relationship of geoid height N and ellipsoid height h to orthometric height H is defined by H = h - N, but what if I have some position in Earth-Centered-Earth-Fixed (ECEF) coordinates?...
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Get the coordinate values from Map.Onclick in Google Earth Engine
I want to calculate a min cost path from a start point to a end point. Because the GEE has not provide the function, I have to code it by myself. The first step is to get the start and end point from ...
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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 ...
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Changing the actual coordinates in shapefile using QGIS
I'm trying to map data for a county in Texas. The data were provided to me in a shapefile, and I've been working with it in QGIS 2.14. My problem is this: The coordinates in the shapefile I was given ...
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XY coordinates efficient way to copy
I get XY coordinates of point features delivered to me in PDF format, this means that to bring them into ArcGIS I manually have to enter them first into an excel spreadsheet.
Is it possible to copy ...
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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.
...
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Applying reverse QgsCoordinateTransform on QgsGeometry in PyQGIS
I have defined xform as a QgsCoordinateTransform to project geographic coordinates.
I can use:
unprojPoint = xform.transform(point, QgsCoordinateTransform.ReverseTransform)
to do the reverse ...
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Performing Vector Affine transformation in QGIS
Due to incorrect datum coordinates, I need to move a large number of elements in shapefiles by a specific distance.
In QGIS 2.8 I would have used the "Affine Transformation" tool, but this ...
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Exporting DXF from Revit to QGIS, loss of coordinates
I'm trying to combine Revit and QGIS. It's mostly about exporting Revit files as DXF and opening them in QGIS.
Every file, no matter how I try to work with the projection in Revit (survey point and ...
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Extract nearest values from NetCDF file in Python
I have a NetCDF database (link to file) obtained from Copernicus Climate Data of ~43k unevenly spaced values around the world. Instead of being indexed using (lat, lon) it uses a sequence of 'stations'...
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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, ...
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How to Append a POINT to a MULTIPOINT column
I have a table in postgresql that includes a geometry(MultiPoint,4326) column.
I want to run a process that appends a new MULTIPOINT(4.49306 52.26167) to this column. I am currently doing this:
UPDATE ...
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Batch convert state plane coordinates to lat long with multiple SPC Zones?
I'm somewhat of a GIS novice and am trying to see if this is possible to save me some time with further investigating. I have about 300 records in a CSV file with the fields SPC Zone, ECOORD, NCOORD, ...
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How to transform coordinates to location in x-y grid in R? [closed]
I have a polygon with a 40m diameter and several points that lay inside it. Now I want to reformat the point locations (projected in DHDN/GK-3, but could vary) to x-y coordinates ranging from zero to ...
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Getting NO2 concentrations for a given area
I am trying to get the NO2 concentrations at different coordinates for a specified area.
From the nc file downloaded from sci hub copernicus, I extracted the latitude, longitude and the NO2 ...
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How do I tie survey data to a coordinate system?
I have Record of Survey drawings from Marin County that I can plot in CAD, but I am not sure the best/easiest way to place the lot lines into a coordinate space. I found some benchmarks in the County ...
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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 ...
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QGIS 3.16.16 OGR error Coordinates
I am editing shapefiles that are derived from data measured with a GPS. I have made several adjustments without problems. Suddenly when I want to add a point to a feature or want to add a new feature ...
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How can easily I convert polar coordinates (using an arbitrary location as the "pole") into latitude and longitude in Google Earth Engine? [closed]
Let's say I have an arbitrary point marked by WGS84 lat/lon. From that point, I measure the distance (in meters) and direction (as an absolute bearing from true north) from that waypoint to the ...
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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 ...
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Creating buffers in meters for locations around the world using Python
I have a location dataset (points long & lat) for events that happened around the World. I want to create 5km rings around these locations using Geopandas.buffer function. Following in a previous ...
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Creating a GeoPandas dataframe from GeoDjango query, then extracting latitude values for Plotly
I am attempting to use information from my PostGis database with my Django application to make a 3d scatter in Plotly. I have timeseries data in my database with different metrics from vehicles, and ...
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How to convert Google Earth polygons CSV to KML
I have converted polygon coordinates from Google Earth (KMZ to CSV) in UTM and now I need to convert that back from CSV to KML. Is there anyway to do that?
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Problems with uploading point coordinate British National Grid data into QGIS as .csv file
I'm very much hoping someone can help me with this, please. I have uploaded raster data from Digimap to use for maps for field sites for my research in the UK. The issue is that this map data use ...
CommunityBot
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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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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 ...
CommunityBot
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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 ...
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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 ...
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Converting coordinates into GeoJSON string with PyQGIS
I'm trying to write some code that gets the coordinates of a point, line or polygon, then I have to convert these coordinates into a GeoJSON string. I'm currently just trying to print it to make sure ...
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Problems importing DJI Phantom images into QGIS
I am trying to import DJI Phantom 4 multispectral imagery into QGIS. I have imported the imagery but the images are not in the right location (showing near the coast of Africa when they should be in ...
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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 ...
CommunityBot
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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 ...
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Feature class to graph with networkx gives random precision of coordinates
The coordinates from a line feature class are stored in a networkx multigraph differently. Some coordinates have 9 decimal places, others 10 decimal places. It seems to be random. I need a stable ...
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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 ...
CommunityBot
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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,
...
CommunityBot
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Access to the coordinates of a NetCDF file
I started working with NetCDF files recently.
I'm working with projected Surge Levels; Data is stored as filename.nc files at Copernicus. This is the file. I got it using an API from their website.
...
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Export all polygons to SVG using QGIS
For a game, I needed to draw the districts of my city in QGIS. I created a layer and drew many polygons on it.
I have now a table with four columns, being "fid", "name" and "...
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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 ...
CommunityBot
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3
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Set print extent in demto3D of QGIS diferent than x min, x max, y min, y max
I have an area that I want to print in 3D. The area has 4 sets of coordinates. I first used a polygon of the area of interest, then cut the DEM of the same area.
I used demto3D from QGIS to generate ...
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Creating a MultiPolygon field that includes multiple
I have been tasked with creating a new polygon layer to include lat/long of atleast 5 vertices. I have a sample of the fields of another customer they work with and I cannot seem to find out anywhere ...
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Convert Garmin or iPhone weird GPS Coordinates
I am trying to find a way to convert over 500 locations I have saved in my Garmin iPhone GPS app (iPhone 4S using Garmin StreetPilot v2.7), but I can't find a way to convert these coordinates as they ...
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