geospatial Questions
2
Solved
I am using python url library to get json response from spatial reference website.This is my code. I get response_read="u'{\'type\': \'EPSG\', \'properties\': {\'code\': 102646}}'" but i need this ...
Seabolt asked 19/7, 2017 at 14:18
1
Solved
I'm trying to create a simple polygon in sf and select only points within that polygon. What am I doing wrong here?
library(concaveman)
library(ggplot2)
foo.df <- data.frame("long"...
Tonnie asked 27/5, 2021 at 14:52
1
I am using GeoPandas in python and have a valid GeoDataframe of polygons.
0 POLYGON Z ((68.70999999999999 623.1 0, 35.71 6...
1 POLYGON Z ((221.33 645.02 0, 185.7 640.33 0, 1...
2 POLYGON Z ((150...
Merril asked 20/4, 2018 at 19:56
3
Solved
I am not an expert at Postgres/GIS subjects and I have an issue with a large database (over 20 million records) of geometries. First of all my set up looks like this:
mmt=# select version();
-[ REC...
Rhinology asked 10/5, 2021 at 17:4
10
Solved
The title basically says it all. I need to calculate the area inside a polygon on the Earth's surface using Python. Calculating area enclosed by arbitrary polygon on Earth's surface says someth...
Azov asked 13/1, 2011 at 15:26
2
In My project there are two requirements
First One : I have the collection below
{
"name": "James",
"loc" : [ 12.9000, 14.6733]
},
{
"name": "James",
"loc" : [ 54.9000, 78.6733]
}
For this...
Hierarchize asked 27/11, 2015 at 9:12
6
Solved
When trying to install Shapely on my Windows 64bit computer, I cannot get the GEOS library to work.
So far, I have run the OSGeo4W installer from which I installed GDAL (I believe the geos librar...
Groff asked 30/10, 2012 at 17:5
2
Solved
Say i have the following dataframe stored as a variable called coordinates, where the first few rows look like:
business_lat business_lng business_rating
0 19.111841 72.910729 5.
1 19.111342 72.90...
Cotswolds asked 28/2, 2021 at 5:7
3
I have a set of lat,long points, and from this points I'd like to extract the points that form the boundaries, I've used convexhull, but for my purpouse is not enough as convehull just returns the ...
Liger asked 21/6, 2017 at 19:46
7
Solved
I've been trying to find a time-efficient way to merge multiple raster images in R. These are adjacent ASTER scenes from the southern Kilimanjaro region, and my target is to put them together to ob...
Komsa asked 8/4, 2013 at 10:16
18
I have latitude and longitude and I want to pull the record from the database, which has nearest latitude and longitude by the distance, if that distance gets longer than specified one, then don't ...
Dustheap asked 10/2, 2010 at 3:21
3
Solved
I have a dataset that looks like this:
site lat long
bras2 41.21 -115.11
tex4 45.3 -112.31
bras2 41.15 -115.15
bras2 41.12 -115.19
For samples with the same site name, I want to calculate their ...
Dena asked 20/12, 2020 at 11:14
3
Solved
I would like to create a map showing the bi-variate spatial correlation between two variables. This could be done either by doing a LISA map of bivariate Moran's I spatial correlation or using the ...
Autarch asked 18/7, 2017 at 21:42
2
Solved
I have a model that looks like this:
public class Facility
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Id { get; set; }
public NetTopologySuite.Geometries.Point L...
Fanya asked 26/12, 2019 at 22:0
4
Solved
I want to write a GEOTIFF, with all the geographic metadata in Java. Which library etc. works best for this purpose?
Amharic asked 15/9, 2010 at 9:46
1
Solved
I would like to create evenly spaced polylines going North to South with 50 mile spacing between each line and 10 miles long. Not sure if this is possible using sf package. In the example below, I ...
Elaterid asked 23/10, 2020 at 23:9
4
I need to extract Points from Linestring using SQL Server. I know that I can see coordinates with geometry.ToString() but I need new points geometry. How I can do it?
Binny asked 26/5, 2012 at 17:33
2
Solved
I'm trying to insert geographic coordinates of a polygon into my MySQL database. I have a field named polygon of type POLYGON, and I've tried running all of these queries but continue to get SQL sy...
Winegar asked 16/3, 2013 at 18:34
3
Solved
I have a table with a POINT geometry field. I enter latitude/longitude points into it like this:
INSERT INTO table( point )
VALUES( POINT( lon_value, lat_value );
Sometimes I do not have lat/lon...
Nowlin asked 12/6, 2015 at 22:18
0
I have a large elevation raster from the ASTER database made by using raster::mosaic(). Each tile represents a one-degree by one-degree portion of the earth with an estimated raster resolution of 3...
Moorer asked 19/7, 2020 at 21:23
3
I am trying to get my head around MongoDB and geospatial searches.
Basically what I want is for users to be able to query documents (images) that
are shot within a set distance from the users curre...
Como asked 20/10, 2011 at 14:46
3
I've been banging my head on this one for days. I have a very simple query I'm trying to run in C#, it looks like this in the shell.
db.runCommand({geoNear: "items", near: {type: "Point", coordina...
Prosecutor asked 29/11, 2015 at 18:8
3
Solved
How do I query MongoDB for nearby geographic points using the C# driver and the GeoNear method?
The following returns points with an incorrect Distance value:
var results = myCollection.GeoNear(
...
Snoddy asked 3/11, 2011 at 12:46
1
Solved
st_intersection is very slow compared to st_intersects. So why not use the latter instead of the former? Here's an example with a small toy dataset, but the difference in execution time is huge for...
Monies asked 18/6, 2020 at 4:0
2
I have a list of coordinates (latitude, longitude) that define a polygon. Its edges are created by connecting two points with the arc that is the shortest path between those points.
My problem is ...
Saxophone asked 4/7, 2016 at 14:22
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