Questions tagged [latitude-longitude]
Angular geographic coordinates that specifying the north-south and east-west positions of locations.
745
questions
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0answers
26 views
Determine if a great circle is on the left or right from a point defined by latitude, longitude and bearing
Given
A point coordinate on the map specified by latitude and longitude. Shown as "C" on pictures below.
Direction where this point is moving, specified by bearing in degrees (0-359), where ...
-3
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1answer
39 views
Is there an Excel, Stata, MATLAB, R or Python program or online website that converts geo-coordinates to distance at large scale? [closed]
I have the geo-coordinates (latitude and longitude) for more than 1000 counties (in Excel) in the US, and I want to know their distances to a particular county with known geo-coordinate.
Is there an ...
2
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1answer
59 views
Lat/Long data to shapefile with many values in CSV dataset
I have my polygon spatial data in a format of CSV with the column of lat/long delimited by comma. Is there any way to upload this csv and got polygon shapefiles (or any other visualisable format)? My ...
2
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0answers
22 views
How to calculate coordinate of a selected points in QGIS?
How to calculate coordinate of a selected points in QGIS? Not just x, y, I need like this: X = 77° 1' 5.032" E Y = 28° 38' 58.034" N.
Refer the attached image the (x,y,z) columns coordinate ...
4
votes
1answer
85 views
lat, lng to lng, lat in polygon WKT - axis flip
I have a sheet with the column with polygon information in WKT format. However, the data taken are from web mapping (OSM or google maps) and in the order of lat, lng. When I am using the solution from ...
-6
votes
1answer
72 views
What are “degrees” in SRID 4326 and why can't they use meters? [closed]
I want to return all the houses for sale within 500 meters from my own house.
I have this query:
SELECT * FROM houses_for_sale WHERE postgis.ST_DWithin(coordinates, $1, 500);
It returns houses ...
1
vote
1answer
35 views
Getting latitude and longitude of lines in attribute table using PyQGIS
I have a road network in form of lines. I retreived the Lat/Long using field calculter in QGIS.
The method I used was:
long: x(centroid($geometry)), for lat y(centroid($geometry))
However, i want to ...
0
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0answers
16 views
How to transpose coordinates in Mapbox (either manually or programmatically)?
So I have a route going from California to India, and it looks like this currently.
The arc is currently going to the left, but I want it to go to the right (over Africa). Can I add a value to the ...
0
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0answers
24 views
Converting polygon with latitude and longitude to x y plane
I have a polygon (shape of a building) containing coordinates as latitude and longitude. I need to convert them into an x-y plane. I have used various methods such as:
const R = 6.371;
const x = R * ...
0
votes
1answer
43 views
Kilometer to degree and back
I used the following code from this github repo I know it take a point coodinates and return area of 10 sequare Km around it by transforming Km to degree, but I need to make this area to 5 sequare Km ...
1
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0answers
18 views
Drawing appropriately coordinate grids [duplicate]
I am having an issue while trying to show the coordinates in the print layout in QGIS. While the coordinate format is in decimal and suffix, it is ok.
I need the format in degree, minutes, and suffix....
0
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1answer
67 views
Extracting lat lon of points from list of postal codes
I have scraped a list of postal codes for which I want to extract (lat, lon) data.
extracted postal codes
In Postal Codes Germany, I was able to extract lat lon for the postal code by is there a way ...
3
votes
2answers
106 views
Getting latitude / longitude in the QGIS Raster Calculator
I have raster files in the good and old EPSG:4326 (WGS-84) and I would like to create two other raster files with the exact same extent and resolution of it, but with the first raster having the the ...
1
vote
0answers
67 views
What is the minimum / maximum of longitude / latitude? [closed]
I'm currently writing code which checks if coordinates are proper. I'm basically asking which check I need to do:
For longitude:
A: -180 <= LONGITUDE <= 180
B: -180 <= LONGITUDE < 180
C: -...
0
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0answers
37 views
Converting latitude, longitude to image coordinates
I have a 2D image and I know a given pixel in the image corresponds to a particular latitude longitude (so basically a reference point). The image I have is a camera image of an outdoor scene and I ...
0
votes
1answer
33 views
Zipcode shape database as lat/long data
I would like to be able to have the Lat/Longs of each zipcode in the United States so that they can be mapped out as polygon shapes
I have used https://github.com/OpenDataDE/State-zip-code-GeoJSON in ...
1
vote
1answer
16 views
Assign NTA's to lat longs using R?
I have lat longs and want R to return a column of the neighborhood tabulation area for each point;
lat long NTA
40.79127 -73.96484 Morningside Heights
40.72622 -73....
6
votes
2answers
168 views
Transform 1860s Australian (English?) map coordinates to modern ones
I hope this is the right place. I found an 1862 reference to a very specific land location, not from where I live in Melbourne, Australia.
However, when I entered the latitude and longitude into ...
1
vote
0answers
32 views
Change of latitude and longitude when rotating around an Euler pole
Suppose we have a point P on the surface of the Earth characterized by its latitude and longitude. There is an Euler pole given together with an angle of rotation around the axis associated with this ...
1
vote
1answer
34 views
Stat_density_2d density plot seem to show too high density values for a small dataset
I'm working with a two-column data.frame with the columns containing x and y coordinates (Longitude, Latitude).
A simple way to visualize a density map is by using the 'stat_density_2d' function. When ...
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2answers
50 views
Concept behind longitudes
Why longitudes are not parallel and why do they meet at the poles? What problem would have happened if like latitudes they were parallel circles running from west to east?
I would request the ...
0
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1answer
28 views
Converting lat long coordinates to shapefile x y values
I'm trying to figure out where a given latitude, longitude coordinate should appear on a particular shape file. The shape file was generated by the US government and I doubt it has any peculiar ...
1
vote
1answer
33 views
Nearest neighbor distance for Arctic area that spans 2-3 UTM zones
Using QGIS3.10, I have tried Distance Matrix and NNJoin (distance results 0 - 10.32 for both, likely in degrees). I have 93 points of 2 types in one shapefile. I have the same distance issue if the ...
1
vote
1answer
46 views
Finding latitude and longitude limits for a sub-region given its name
In order to extract climate data from Copernicus, there's the Sub-region extraction section that allows one to extract data from a region within specific coordinate limits.
I am wondering how should ...
1
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1answer
40 views
Field survey and Google Earth crop points
I am trying to apply machine learning to classify and distinguish crop types in my AOI, using optical satellite images. I don't have access to a pre-classified land use land cover reference map. And ...
1
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0answers
25 views
Plotting heatmap on QGIS using external CSV values rather than density of lat/long points
I'm trying to plot a heatmap in QGIS.
The lat/long coordinates I have are arranged into 4 parallel lines (4 survey transects), with a third column in the CSV file comprising a value ranging from 1 to ...
3
votes
2answers
93 views
Exporting x,y coordinates as latitude,longitude
I have a shapefile and I loaded it into QGIS using Add vector layer.
After that, I can see points in different positions.
I open the Attribute table and I can see columns "X" and "Y" with values such ...
3
votes
3answers
131 views
What is the height reference point when using Longitude, Latitude , Height coordinates?
I'm using a library to convert LLH(WGS84) to ECEF coordinates. Does height (for corresponding longitude and latitude) denote height above/below the designated earth radius (I'm using 6378137.0m) or ...
0
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0answers
36 views
Plot (latitude, longitude) data into a picture
I have a matrix where en each position I have certain latitude, longitude and each position has a certain value, i.e. amount of rain in that location. I want to plot in C++ the values in an image but ...
1
vote
1answer
47 views
Convert from spherical angles to longitude and latitude
I have some images extracted from a radar from Austria and a formula for the projections (the exercice says The projection formulas map pixel locations to geographical coordinates), that transforms ...
2
votes
2answers
72 views
Getting building addresses from Google Maps API
I am trying to download all the building addresses on a specific street.
Is it possible to download all addresses using Google Maps API as building address are available online in maps but API is not ...
0
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1answer
32 views
Applying the censusgeocode Package to an Entire Dataframe of Geocoded Data
I have a data frame of latitudes and longitudes. The goal is to apply the censusgeocode package to the entire data frame where our x is our latitude column and our y is our longitude column. After ...
1
vote
1answer
246 views
Create a bounding box from a lat/long
I'm trying to create a bounding box from a simple Lat/Long, given an increase size in metres.
For example, create a bounding box from X/Y which goes outwards 5000m at the NE / SW corner. (yes, this ...
0
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0answers
39 views
getting convert X and Y to lat and long
I have a table called IK_TEMP and it contains columns called data, range .
String sql = "SELECT DATA, RANGE FROM IK_TEMP";
try (Connection conn = this.connect();
...
0
votes
1answer
58 views
EXIF: Can you calculate latitude from longitude value and true north value?
I have an iPhone image that contains the GPS longitude and a bearing relative to True North. Is it possible to calculate the latitude from these two values?
EXIF metadata in question:
GPS Longitude ...
0
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0answers
22 views
Obtaining latitude and longitude on Earth from Satellite location and pointing angles
Considering the Earth as a perfect sphere and knowing the position (latitude,longitude and height) of a satellite.
I would like to transform the pointing angle from the satellite (defined by two ...
0
votes
1answer
64 views
Calculate azimuth angle in QGIS
I have a few exercises to do and I can't do it at all. I am newbie to this field.
I use QGIS 3.4.
Exercise 1
What is the azimuth between the starting point and the Z place?
I must write the value in ...
0
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2answers
31 views
Adding latitude and longitude around an image saved in ArcMap
Is there a way to add latitude and longitude around an image in ArcMap when you are in layout view? I have attached an example of what I mean. I would like to do this so people looking at a saved ...
0
votes
1answer
26 views
Find longitude intersection of given latitude at z=0 for a globe
I have a globe image that is centered at lat,lon. At this lat,lon, by definition x=0, y=0, z=1.
A line of latitude drawn on this map can either be completely visible (in which case it would be drawn ...
1
vote
1answer
23 views
Export latitude/longitude coordinates of a R map plot into an external file
I have a simple map and like to export the used coordinates of latitude/longitude
into an external CSV file. Is this possible?
library('maps')
map(database='world',regions='germany')
1
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0answers
25 views
Method to determine of coordinates in GeoJSON feature are Lat/Lng or UTM?
Is there a @turf or any other helper method to quickly determine if coordinates in GeoJSON feature are Lat/Lng or UTM?
1
vote
2answers
45 views
PDAL is mixing Lat and Lon when using tindex
I am trying to extract polygon representing the extent of my .LAS file. I am using tindex to do so.
When importing the resulting file, it looks like longitude coordinates are set as latitude and vice ...
2
votes
1answer
85 views
How do you flip and rotate NetCDF (.nc) files in QGIS?
I am trying to extract Surface PM2.5 values from the NetCDF files available on the Atmospheric Composition Analysis Group's website. However, when I load it into QGIS, it appears to be flipped and ...
0
votes
0answers
52 views
How can I calculate the course angle of two coordinates in decimal degrees?
I want to calculate course angle of two given decimal degrees, like shown in the following picture:
In the above picture the result would be 135°
The coordinates are given in decimal degrees, e.g. (...
1
vote
1answer
33 views
Save MapContent issue with latitude/longitude lines
All labels for longitude lines at bottom and latitude lines on left and right of the map look fine when viewed in JFrame like the one used in https://docs.geotools.org/latest/userguide/tutorial/...
2
votes
4answers
97 views
Converting Latitude and Longitude to multiple UTM zones
I have a data set of 3000 plots with coordinates in Lat/Long. It spans 13 UTM zones. I want to break it up into chunks corresponding with the 13 UTM zones, and convert the coordinates in each chunk to ...
1
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0answers
58 views
How to plot latitude, longitude and elevaltion data in python [closed]
I have latitude and longitude and elevation data in a CSV file and I want to process it in 3d to something like this
the data set is kind of like this
I just want latitude, longitude and elevation
0
votes
1answer
38 views
Convert pixel x,y position on map to latitude and longitude
My map takes up 100% width and height of the browser screen.. I have a draggable div that is super imposed over the map, I am am capturing this divs position using offset(); to get the pixel top and ...
1
vote
1answer
121 views
Latitude labels location on map
Following Label coordinate position of Grid lines
explanations I was able to create latitude lines every 10 degrees with labels.
The values of the latitudes are drawn following the prime meridian (0 ...
2
votes
1answer
32 views
Set meridian label position and orientation
I have followed Label coordinate position of Grid lines to be able to draw meridians and parallels with labels.
The meridian labels are placed at the Equator line and oriented in the direction of the ...
