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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Overwriting polygon coordinates in R

I have polygons in a sqlite database. I have managed to load the coordinates of one of the polygons into R and have calculated new coordinates for the corners of that polygon. I would now like to ...
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Python/PyQGIS - Count from Image corner using pixel x y to create x y coordinates

I have an output from a model which provides me with .txt file containing pixel X Y values. What I need to do is convert them to a set of coordinates (Irish grid, 29902). The images feed into the ...
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Getting (0,0) instead of the intersecting co-ordinates value

This code works below fine when line(The Circle I mean) intersects more than two new lines but fails when both the intersection falls in the middle of the same line polygon_path = iface.activeLayer() ...
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107 views

R sf Polygon subtract 1000 from x coordinates

My aim is to subtract a value of 1000 from all x coordinates of an R sf object. How can I achieve this? When running the following code the value 1000 is subtracted from all coordinates (x and y ...
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197 views

Coordinate entry in QGIS 3

I am frustrated by the seeming difficulty of calculating x,y coordinates in QGIS 3. As a longtime user of ArcGIS I find Esri much easier for this. However, I like QGIS and think in many ways it is ...
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380 views

NITF raster (Worldview) failing to load correctly in QGIS

I am attempting to load in multispectral and panchromatic rasters in NITF format into QGIS in order to run a pan sharpening process using OTB toolbox. Loading in the panchromatic is fine, but upon ...
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1answer
52 views

Adding GPS coordinate points to point feature class using ArcGIS Pro

I have a raster, and in ArcGIS Pro 2.4, I created a point shapefile with 830 points. I forgot to specify that I wanted to show the GPS points in the attributes table of each point. However, I need to ...
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38 views

'Add XY Data' and 'Make XY Event Layer' are plotting points at an inaccurate latitude

I have a .csv file with 10 wells and their respective longitude (X) and latitude (Y). Every time I try 'Add XY Data' or 'Make XY Event Layer', my wells are being plotted at some random place in the ...
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68 views

Changing bad coordinates of GeoJSON shape to coordinates of another GeoJSON shape?

I have two GeoJSON file one with true coordinates, one with wrong coordinates with labels. They both refer to the same geographical object: districts in Georgia. I would like to convert the ...
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108 views

Updating xy fields in attribute table automatically when moving points to new locations in ArcMap?

I work on ArcGIS Desktop 10.3.1 and try to move several points so they are corresponding simultaneously to the coordinates value in the attribute table immediately. I know this question repeats in ...
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1answer
144 views

Formula to calculate the next coordinate given a coordinate, distance,direction and probably speed

I have this coordinates 52.3545362,4.7638767 which I got from a Google Maps search of Amsterdam. URL https://www.google.com/maps/place/Amsterdam,+Netherlands/@52.3545362,4.7638767,11z/data=!3m1!4b1!...
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309 views

Find most NW, NE, SW, & SE coordinates from a group of long/lats

I have a list of 900-1000 longitude/latitude coordinates. I know and can depend that these coordinates form a rough rectangle. Is there a formula to determine which coordinates are at the corners (NW, ...
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1answer
93 views

CSV file projection not aligned with Basemap

I uploaded a CSV file with DMS coordinate systems in it into QGIS. The points appeared on the white background. When I add a GoogleImage background in the projected coordinate system WGSPsudoMercator, ...
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83 views

Mapping RBG color to coordinate possible?

I work with geologists who are trying to figure out how to use Qgis to batch apply colour values to coordinates so that we can visually see differences or patterns. From the attached photo of soil ...
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95 views

Changing coordinate systems of asc file in Python

I am working with asc files and what I need to do is do change the coordinates from Lambert Equal Area to WGS 84. I’ve tried a few things (xarray, rasterio, GeoPandas...) but nothing seems to work ...
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Importing cvs file with coordinates into QGIS [duplicate]

I got a problem. I got some coordinates in Excel. They are written with comma 14459091,1010 ex. When I try to import them as csv-file into QGIS, it will only create a table and no points. When I look ...
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1answer
112 views

Divide a polygon in to smaller polygons using JavaScript

Im having a polygon data { "coordinates": [ [ [ 76.878324056172, 8.58553370915678 ], [ 76.8928294425245, 8.58273302582363 ...
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134 views

Why does size of circle object drawn in Google Maps increase when moving it away from Equator

I'm building a web app that allows the user to search the database based on his Google Maps location and a customizable search area around the location. I've noticed that when I keep the radius of the ...
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1answer
51 views

Exctracting values and their coordinates from a raster layer in QGIS?

I would like to extract the pixel value and coordinates of each of them from a ndvi raster layer. I don't have a point layer from where I can extract those values, as I read in other posts. ...
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70 views

Finding boundary coordinates of user current location with a given radius

I have my current lat and lng details { "lat": 8.561032, "lng": 76.846333 } And from this I need to build a boundary around me with given radius. So How can I get the boundary ...
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48 views

ArcGIS Pro, WFS error, wrong place!

Created a local WFS layer with GeoServer. Loading in ArcGIS Pro seems, X and Y turned and rounded!?? Features are all in Holland with 4,xxxx and 51,xxxxx So now all the records come in rounded 51,...
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1answer
91 views

Get Z value into attribute table from KMZ

I have extracted GPS data from photos using geosetter, so that I can then import them into ArcGIS Pro as a shapefile. This I can do but when I try to write the XYZ coordinates to the attribute table ...
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1answer
92 views

Selecting coordinates of points below DEM (DTM)

I have a DEM file and a big list of X,Y,Z point (about 1M). Each of them can be below or above the DEM file. Is there a quick way to select the x,y,z points below the DEM file using Python? I did ...
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914 views

Reversing coordinates of MultiPoint using Shapely?

How to reverse the cooridnates order of this MultiPoint: MULTIPOINT (92 169, 100 163.552380952381, 105.2167832167832 160, 266.7552447552447 50, 290 34.17142857142857, 302 26) to this: MULTIPOINT (...
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364 views

Leaflet map with coordinates included in the URL path

I am trying to implement the dynamic coordinates in the URL path in the leaflet map as per the Google Maps example. I found some examples: https://stackoverflow.com/questions/15919227/get-latitude-...
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How can I calculate point's coordinates based on bounding box and tap click on phone screen? [closed]

E.g. I have bounding box [94818.24, 116189.125] [94818.914, 116189.8] and point's coordinate on my screen [695, 1082]. So how can I get a coordinate in CRS=EPSG:99781
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406 views

Adding latitude/longitude coordinates of a map item in QGIS3 Print composer?

I can already create lat/lon or UTM grid in Print Composer but I was also asked about possibility to have a mix of both: 1) standard map grid using UTM - I can do this :-) and 2) latitude/...
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85 views

Point/Area location of data in reference to geotransform of raster

I'm trying to understand how to interpret the position of pixel data within a GDAL raster, specifically as it applies to files containing height data. I'm create Triangular Regular Network (TRN) for ...
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47 views

Coordinates in decimal degrees in QGIS

My project is set as WGS84, my layer too. I have re-projected it. I have copied my layer. I have used "Add Geometry attributes," choosing the right CRS, but I'm still having my coordinates in meters! ...
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115 views

Get coordinates of all pixels in a raster [closed]

I have a georeferenced raster and I need to extract a list with the coordinates of pixel in reference system (EPSG:32631) and the coordinate of pixel in raster reference. I want a list like this (...
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1answer
126 views

From QGIS to Google Maps coordinates

I try to convert QGIS coordinates to Google Maps coordinates. I use this form: geom_to_wkt( transform( $geometry, 'EPSG:25832', 'EPSG:4326' ) ) I getting the coordinate like this: Point (12....
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3answers
161 views

Plotting map locations from csv-file

I have a map of a city and a .csv-file containing 700 geographic coordinates pointing to locations within that city. How can I plot these 700 locations on the map?
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1answer
121 views

Calculating destination point using Python

I am trying to write a function that calculates the GPS (decimal) coordinates of a point that is far of a given distance from a given point. Let say that we start from point 1 (The stripe of Dublin) ...
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1answer
93 views

Calculating destination point using sf package

I have the following data: lat <- c(-1.404361, -1.403221,-1.387369) long <- c(35.35373, 35.35047,35.35171 ) distance <- c(220,150,300) bearing <- c(67,27,159) df <- data.frame(lat,...
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896 views

Creating grid following points in QGIS?

I am working with a set of coordinates from a csv file that creates a grid (of points) in QGIS. There is an id attribute along with the X and Y coordinates for each point. I need to work with a ...
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38 views

Generating randomised coordinates data set using R?

I am looking to produce a data set of randomised coordinates points that can easily be generated in R with something like: Seqlat <- seq(from=-90, to=90, by=.01) Seqlong <- seq(from=-180, to=...
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164 views

Memory usage (or absolute bytesize) of geometry objects(shapely) in a GeoDataFrame in Python?

I am currently working on analyzing data structure and size of a shapefile. To analyze it, I was wondering how much geometry column consumes the size of a shapefile. Unlike other features, geometry(in ...
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2answers
180 views

Reprojecting point data from EPSG:3078 to EPSG:4326

There are services to project from one coordinate system to another, GIS software packages that perform projections, but it is all black box, as far as I've been able to find. I want to see the ...
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1answer
186 views

Setting the correct grids in QGIS 3.8 map composer?

My area lies between E 92.25-92.50 and N 24.50-24.75. When I tried to draw the coordinates on QGIS 3.8 map composer, it showed the co ordinates as E 8.00-E 24.000 and N 0.000-16.000. I used the ...
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1answer
191 views

Seeking ArcGIS Pro tool to get min and max latitude and longitude coordinates?

I am very new to ArcGIS Pro and have been struggling with getting the minimum and maximum latitude/longitude of an area in ArcGIS Pro. I am looking to get four coordinates of a rectangle that ...
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38 views

Layers not lining up

I have a layer from one source that was originally in one coordinate system and am attempting to use it with map layers from Google and Open Maps. I have set the project properties, the map layer and ...
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1answer
729 views

Transforming GeoJSON data to turf.polygon?

I want to transform GeoJSON multipolygon to turf.polygon for find point within polygon but it can't read property from GeoJSON. Is there any way to do that? This is my polygon data in GeoJSON: ...
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27 views

Snap raster to specified coordinate point?

Is there any way to get a raster to snap to a specified coordinate point? The documentation for the snap raster environment setting says: The lower left corner of the given extent is moved to the ...
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1answer
30 views

Importing editor toolbar in ArcGIS ModelBuilder?

Is it possible to import editor toolbar in ModelBuilder of ArcGIS? Basically I want to get coordinates of points on a shapefile (line) by randomly selecting, say 10 vertices and then using sketch ...
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206 views

Map gridded rainfall data to lat-longs and extract daily rainfall data? [closed]

My objective is to create a dataset, wherein for certain locations (lat-longs) I need to report daily rainfall from 1950 to 2017. Rainfall data source: Indian Meteorological Department (IMD) daily ...
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1answer
151 views

Longitude and latitude in aviation

I have two coordinates A = (60◦ N, 30◦ E) and B = (60◦ N, 150◦ E). I want to calculate the shortest possible route between these two points and also I want to know how far north does the route goes. ...
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208 views

Break a bounding box into smaller boxes (coordinates)

My objective is to create a collection of bounding box coordinates that I can supply to a search function. The idea is that I have the search function search smaller geographic areas, instead of one ...
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1answer
48 views

Unable to convert coordinate format

I am trying to figure out the format of the coordinate pair below. My task is to convert a list of these integer values into decimal degrees (below), but this is my only ground truth data point. ...
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1answer
38 views

QGIS transform coordinates (to_dm)

I want to transform x-coordinates into dddmm.mm. When I use an expression like to_dm($x, 'x', 2) I am getting something like in the screenshot. This is obviously not correct. What am I doing wrong?
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26 views

Matlab's geographicToDiscrete function does not return the correct col, row

I have a shapefile with points (in WGS84) that overlap with a raster layer (also in WGS84) and for each point I want to calculate the corresponding col and row raster coordinates. I work on Matlab ...

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