Top "Geospatial" questions

pertaining to the geographic location and characteristics of natural or constructed features and boundaries on, above, or below the earth's surface; esp.

reading and plotting an esri shape file in R

I'm having difficulties reading in a .shp (esri shape file) into R. I have tried several options in R, and …

r vector geospatial plot esri
Why Use Redis instead of MongoDb for Caching?

I've seen many people using Redis as a cache lately, why not Mongo? As far as I could tell Redis …

mongodb memcached redis geospatial
How to plot a heat map on a spatial map

I am new to spatial data analysis in R and would like to do something easy, I am still having …

r ggplot2 geospatial
How do you use MySQL spatial queries to find all records in X radius?

I have a table in a MySQL database with a spatial geometry column of type POINT. I'd like to be …

mysql geospatial spatial-query
How to create a grid of spatial points

library(reshape2) library(data.table) library(dplyr) library(magrittr) library(ggplot2) library(scales) library(gstat) library(DescTools) library(sp) #I …

r geospatial r-grid desctools
Taking altitude into account when calculating geodesic distance

i´m currently dealing with gps data combined with precise altitude measurement. I want to calculate the distance between two …

geometry gps geospatial
Geo Fence: how to find if a point or a shape is inside a polygon using oracle spatial

How do i find if a point or a polygon is inside another polygon using oracle spatial SQL query Here …

geolocation geospatial oracle-spatial
R-Tree and Quadtree Comparison

I want to compare the R-Tree and the Quadtree for geospatial data. While there is literature out there I struggle …

indexing geospatial quadtree r-tree
Lat/Lon + Distance + Heading --> Lat/Lon

So: I have the following function, adapted from a formula found online, which takes two lat/lon coordinates and finds …

function geometry geospatial
How to import Geojson file to MongoDB

Since Geojson is actual json I thought i could to use mongoimport to load data into my MongoDB database from …

mongodb geospatial geojson