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.

Filter by
Sorted by
Tagged with
0
votes
1answer
21 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 ...
1
vote
1answer
53 views

Conversion between DMS Formats in QGIS

A point vector layer was added to QGIS, after exporting the layer to .xlsx the coordinates in wkt format were attached to the table. In QGis I added additional columns x and y, to assign a coordinates ...
0
votes
0answers
16 views

Coordinates outside the map frame in Layout doesn`t show - am I missing something or it`s a bug?

Trying to get coordinate grid around my map in Layout. Like this: , grid across map is not necessary, only the marks along edge. All the settings seem to be correct according to suggestions online, ...
0
votes
1answer
25 views

Syntax for retrieving the coordinates of point features using GeoPandas

I have two point shapefiles (with just one point each, let's call them 'Origin' and 'Destination'). I need to find the shortest path between them over a street network extracted using OSMnx from ...
1
vote
1answer
41 views

Getting coordinate vertices of a polyline in QGIS

How can I get the (x,y) coordinates of the vertices of a polyline in QGIS? I do not find the function in the field-calculator I can find the coordinates for each point, but I am not able to highlight ...
1
vote
0answers
20 views

Creating KML file from X and Y coordinates and Boolean values array

Is it possible to create a KML file for visualization in Google Earth form the coordinates and a Boolean array. mancha = np.where(v_int > z, 1, 0) plt.scatter(coords[0], coords[1], c=mancha) The ...
1
vote
1answer
52 views

Printing message with map canvas coordinates after user click in QGIS Plugin

I need to print a message after the user pushes the button "Prueba". The message must contain coordinates "x", "y" from the user's click in the map canvas. I don't know ...
3
votes
1answer
69 views

Create polygon grid based on spatial points (WGS84) with R

Initial problem: I am currently trying to create a spatial grid in which each cell is centered on predefined spatial points. These spatial points are projected in the WGS84 international coordinate ...
1
vote
2answers
36 views

Converting DMS to coordinates with +/- signs

I am looking to convert Degrees/Minutes/Seconds coordinate data into decimals for plotting. However, I am unfamiliar with the science behind the +/- signs given by the longitudinal coordinates. I have ...
0
votes
0answers
17 views

Rescaling raster to match another precision of coordinates using ArcMap

I am working with 2 DEMs using ArcMap 10.5. Both have a resolution of 0.5 m but the first one has coordinates such as X=243600.5 m and the second one X=243600.3m. I need to make sure they both have ...
3
votes
1answer
108 views

How to project xy coordinates to have same decimal precision

I have two data frames with different coordinates reference systems, one in WGS 84 and the other is the British National Grid. When I transform them into the same crs definition (WGS 84) one of the ...
0
votes
0answers
10 views

Difference between SRTMGL3_NC and SRTMGLC3_NUMNC

I requested elevation data from https://lpdaac.usgs.gov/products/srtmgl3v003/ by using the API and received couple of files. I received two .tif files, which are obviously elevation data. However they ...
1
vote
1answer
30 views

How to make continuous map of Eurasia?

I have a raster map of Eurasia, as shown here: I want to move the Kamchatka Peninsula (on the far left side of the map) to the right side, so that the map is continuous and I can crop it to Eurasia ...
0
votes
1answer
42 views

Identifying Coordinate System of dataset

I have an .nt file that contain some geographical information like the flowing: <'Ain_Daoura> <hasGeometry> "POINT (186.01667 213.88333)"^^<degrees> .. After loading ...
3
votes
0answers
29 views

How to properly convert from WKT to euclidean 3d points?

I am not a geoscientist (I do computer graphics), however I am trying to render some geospatial data encoded as a WKT file. I have a POLYGON with 2 coordinates per point, which seems to be ...
0
votes
1answer
44 views

Drawing on Leaflet map give incorrect coordinate

I am using Leaflet and OpenLayers. When I draw a bounding box I am getting the correct lat and lon if I use OpenStreetMap tilelayer. When I switch to using EarthData tilelayer the bounding box is ...
2
votes
0answers
41 views

Iterate through list with numbers (as text)

I want to iterate through a list of coordinates and see it the last coordinate matches the first coordinate. The coordinates are stored in have a GeoJSON string: '''{"type":"...
0
votes
1answer
52 views

Why is ArcMap failing to add latitude and longitude to point shapefile and messing up other fields?

I have a large shapefile with 92 million points which I had converted from the pixels of a Brazil land cover map. I want to add latitude and longitude fields to the shapefile, and I did so using the ...
1
vote
2answers
43 views

Why is there a difference in latitude/longitude for the same place?

I am a complete newbie to this field. When I look up that lat/lon of a place on the web, I see different values reported. For example, for Jamaica Bay, New York, Google shows 40.6057°, -73.8713°. But ...
0
votes
1answer
30 views

Finding and replacing coordinates in GeoJSON

I have converted kml files to GeoJSON strings. These represent polygons that are often not closed. I want to enforce their closing by searching for the first lat/lon coordinate in the string, checks ...
0
votes
0answers
19 views

Extracting XY coordinates from dynamic web map

I am trying to extract XY coordinates/georeference points from a dynamic web map (specifically electric vehicle charging stations). I basically want to download/extract the location of the charging ...
1
vote
0answers
29 views

Meridian Convergence in UTM and Gauss Kruger Projection system?

There are points where geographic coordinates (latitude and longitude) are known. I have calculated the UTM (Universal Transverse Mercator) projection coordinates of these points and then I want to ...
0
votes
1answer
43 views

How to transform OpenLayers coordinate projection

I have a function where I calculate the coordinates of the bounding box: map.on('moveend', function (evt) { let bbox = map.getView().calculateExtent(map.getSize()); console.log(...
0
votes
1answer
61 views

Converting Coordinates in Excel

I am creating a spreadsheet of data to enter into QGIS. My grid references are currently formatted like this: 339614, 133960 - they are the coordinates in the brackets on this site https://www....
0
votes
3answers
32 views

XY Co-ordinate information for Start and end point of Line in vector layer

How can we get XY coordinate for Start and end point of Line in vector layer
2
votes
2answers
75 views

Python function which recognises when to convert coordinate system

How do I write Python code for an AWS lambda function which will convert easting and northings to longitude and latitude? For example, if a CSV is uploaded into an S3 bucket it may contain either ...
1
vote
2answers
66 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 ...
0
votes
0answers
9 views

Building geometry in ArcPy from a table of coordinates and maintaining their attributes in the output [duplicate]

I've created polygons from a table that has two columns- an OBJECTID and a string of coordinates (Polygon_Coordinates). The resulting polygons (called "testing" in the code below) are in the ...
1
vote
1answer
39 views

Modify coordinate string in parsed KML file [closed]

I am new to Python. I found this code on the internet to parse names and coordinate strings from KML files and write them into a .csv file. Works excellent! However, for my purpose, I need to convert ...
1
vote
2answers
32 views

Efficiently converting/storing WGS84 Lat/Long as Integers

I'm a GIS newbie and I'm trying to figure out how I might store WGS84 coordinates as an integer efficiently. I could simply multiply it (10e7 for example) but I feel like this must be a problem that's ...
4
votes
1answer
82 views

Adding latitude and longitude to QGIS file without losing the current xy coordinates

I plan to convert a .dwg-file to QGIS. The coordinate system of the .dwg-file is set up in feet in the x and y directions from a point near the bottom center of the drawing. This coordinate system ...
2
votes
1answer
54 views

Wrong coordinates but polygons and map are aligned just fine in QGIS

I have 2 polygons I downloaded from public databases and I used the Bing aerial map with the OpenLayers plugin. They are aligned PERFECTLY, they are in the area they are supposed to and everything was ...
2
votes
1answer
63 views

How to calculate azimuth from the south, latitude, departure with two points?

I'm making a Line class in python and the attributes we need to put in are the first point, end point, latitude, departure, distance, and azimuth (from the South). The points consists of eastings and ...
1
vote
1answer
49 views

How can I update position of points with coordinates?

I have the following use case: I have around 1000 points and their positions in the attribute table. Sometimes I get an email with an updated position (coordinates) of a certain point. The problem is, ...
0
votes
2answers
26 views

Trying to apply inlabru:::bru_fill_missing to a SpatialPointsDataFrame to fill in NAs

I'm struggling with a function from the inlabru R package, which could help me fill in the NAs in my data. According to the helpfile, I need: bru_fill_missing( data, where, values) data is a ...
0
votes
0answers
26 views

Datasets with same geographic and projected coordinate systems, appearing in different locations [duplicate]

I have two different sets of data (multiple shapefiles in each), when I import dataset 1 lets call it, into ArcMap it displays this error message: I then use Define Projection tool on dataset 1 which ...
2
votes
1answer
38 views

What reference system uses coordinates such as “726822 4881333 to grid reference 726803 4881420”? (Nova Scotia Anglers' Handbook, 2021)

Here is a sample from the Handbook. I don't know how I am supposed to fish legally here when I don't have a clue where and where not! DIGBY COUNTY Salmon River, downstream from the Route 1 Highway ...
3
votes
1answer
198 views

What is the most efficient way to create millions of lines using Python from coordinates?

I am trying to create a flow map and I have 150 million rows of data. I have tried to use QGIS's Virtual Layer (described in Creating virtual layers using Python and export them without using QGIS UI) ...
5
votes
1answer
168 views

Shapely coordinate sequence to GeoDataFrame

Using the shapely bounding box function box, and a GeoDataFrameof points, I have extracted a bounding box and created a buffer around it (below gdf is a GeoDataFrameof points): bbox=shapely.geometry....
5
votes
3answers
380 views

Copying coordinates under mouse to clipboard in QGIS

I need a way to quickly copy coordinates under mouse to paste them to external program (3D reconstruction software I use for making maps from photos). I see the coordinates within status bar at bottom ...
4
votes
3answers
114 views

Creating multiple separate vector lines from list of coordinate pairs in QGIS

I'm a QGIS user with 2 years of experience but I don't know how to do this task easily. I'm on QGIS 3.10.6 A Coruna. I know how to import CSV coordinate points and then convert them to a vector using &...
0
votes
1answer
20 views

Identify if point over land or ocean using lat/lon in R with confidence metric

How can I determine whether a coordinate is above land or ocean with a confidence metric in R? I've used the sf package method described in another question: Given Lat and Lon identify if point over ...
4
votes
1answer
44 views

Modify the format of grid coordinates

I am producing maps using OSGB references. However, I am using a 500m square grid, not 1km square. I would like to show the grid reference in a 3 digit format, the final digit being in a smaller font ...
1
vote
0answers
43 views

Creating a code that computes the distance between two properties given northings and eastings

I was given a file with different properties in different sheets containing coordinates for each corners. I need to create a program that computes the distance between two lots. I'm not sure how to ...
4
votes
0answers
69 views

Earth Engine coordinates in a map

I am beginner and I'm having troubles to do what I want in Earth Engine. What I want: put the coordinates under the map (under the layer). Like this: I already made the layer, but I don't know how to ...
1
vote
0answers
22 views

Creation of a polynomial function from old and new coordinate system pairs

I have data points in the old Roussilhe Stereographic coordinate system of Suriname (u,v), I have the same data points also in WGS84 UTM21N coordinates (x,y). I want to create a polynomial ...
2
votes
1answer
45 views

KMZ file in wrong coordinate system and won't transfer into correct one

I'm using a pyroclastic flow simulation model (Titan2D Mass Flow Simulation GUI) that uses UTM WGS 1984 and from what I can tell, the coordinates that I'm inputting are all correct. When I view the ...
0
votes
0answers
28 views

Downloading point coordinate data from a website

I would like to copy the red dots of the following web page: https://www.inspectorulpadurii.ro/#/ to points in QGIS. The accuracy can be bad. I wanted to just place the points in QGIS with a ...
1
vote
0answers
67 views

Calculating azimuth angle from two X,Y,Z points

I'm following @whuber's post for calculating azimuth and elevation angles based on two vector3's. The elevation equation works great and gives me numbers that makes sense. I'm running into issues with ...
3
votes
2answers
87 views

Export coordinates as text from a shapefile layer in QGIS

How can I export X and Y coordinates from a shapefile layer as a text file in QGIS 3.18? The height of every point is displayed in the attribute table, the x and y coordinates are not. They can only ...

1
2 3 4 5
27