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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10 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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19 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
80 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
45 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
33 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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28 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
28 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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16 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
21 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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34 views

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

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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40 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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24 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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Find the X,Y value in an image if i know the 4 bounding points X,Y when a user clicks any point in the image [closed]

I have an image loaded in UI (browser)where I know the X, Y value of all four corners. User will click on any random point in that image. I need to find the X, Y value of that point where the user ...
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1answer
35 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
21 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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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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26 views

Spatial index not speeding up spatialite query containing Multipoint Geometry Data?

I am querying a sqlite format geodatabase in which there is a label for each geometry shape. Think of data as : label = name of a district in your state geometry: polygon which specify the ...
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1answer
18 views

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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23 views

Do extra zeros change the coordinates for decimal degrees?

At my work we require contractors to submit work reports in decimal degrees with 6 decimal places, i.e. the location of where they paved roads or put in a road sign. The question is, contractors have ...
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3answers
57 views

Finding coordinates of centroids?

I have a few thousands of polygons, which I found the centroid for each one of them. Now I want to find the coordinates of each centroid. But for some reason the x and y columns are empty and I don't ...
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34 views

Accuracy of Google Maps geo-coordinates vs high precision GPS receiver

I need to know how accurate coordinates obtained from Google Maps/Earth are. Are they 'quasi absolutely' (I know there is no absolut location determination)? In other words, if I record the ...
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1answer
59 views

Converting XY coordinates in the Iberian peninsulate to lat, lon?

I have been looking for a way to convert XY coordinates (from a coordinate system based on ETRS89) to latitude and longitude coordinates. So far I have this function: from pyproj import Proj, ...
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3answers
146 views

Updating multiple vector points at once with vertex editor in QGIS?

I have a series of points in .shp format arranged in lines over an area, which I've used the 'regular points' tool to generate. In some of the lines, I want to decrease the spacing of the points so ...
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22 views

Recognized, calibrated test points for a rangefinding function?

I'm trying to find out if there are scientifically accepted calibration points to measure the effectiveness of a geodetic distance finding function. So far I've been using the listed latitude / ...
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1answer
24 views

Converting Lat,Long to XY in ArcGIS API for Python?

I am working on a Alexa skill where I get the user's location (Lat, Long) from the device. Since my skill only applies to a specific city (Boston, USA), I am using the ArcGIS reverse_geocode to ...
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7 views

Reducing coordinate decimal places in WKT using C#?

I have imported several shapefiles into a Microsoft SQL Server 2017 database When I use the STAsText() function on geography objects I get the following WKT: SELECT [Adm0GeoBoundaryID] ,[...
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1answer
63 views

Difference between $x and x($geometry) [closed]

I just stumbled across something weird: I had point-data in EPSG:3059 and wanted to add the coordinates to the attribute table using $x resp. $y - which returned NULL. x($geometry) on the other hand ...
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42 views

Move polygon to new location (find new lat-lng coordinates)

I need to move my polygon (region of geographical area) with 4 different (O1, O2, O3 and O4) lat-lng coordinates (as shown in the figure) to another place, so that I get new values of all 4 lat-lng ...
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2answers
70 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
21 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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26 views

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
24 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
69 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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47 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 ...
2
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1answer
80 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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1answer
66 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
26 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
39 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
47 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
53 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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0answers
23 views

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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0answers
32 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
59 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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15 views

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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0answers
11 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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0answers
13 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
42 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
99 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
39 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
50 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. ...