point-in-polygon - w3toppers.com

geopandas point in polygon

Not really clear what kind of data structures you actually have. Also, all your expected results are False, so that’s kind of hard to check. Assuming GeoSeries and GeoDataFrames, I would do this: from shapely.geometry import Point, Polygon import geopandas polys = geopandas.GeoSeries({ ‘foo’: Polygon([(5, 5), (5, 13), (13, 13), (13, 5)]), ‘bar’: Polygon([(10, 10), … Read more

Determine if a point reside inside a leaflet polygon

Use the Ray Casting algorithm for checking if a point (marker) lies inside of a polygon: function isMarkerInsidePolygon(marker, poly) { var polyPoints = poly.getLatLngs(); var x = marker.getLatLng().lat, y = marker.getLatLng().lng; var inside = false; for (var i = 0, j = polyPoints.length – 1; i < polyPoints.length; j = i++) { var xi = … Read more

Check if point is in spatial object which consists of multiple polygons/holes

You can do this simply with gContains(…) in the rgeos package. gContains(sp1,sp2) returns a logical depending on whether sp2 is contained within sp1. The only nuance is that sp2 has to be a SpatialPoints object, and it has to have the same projection as sp1. To do that, you would do something like this: point … Read more

Find Point in polygon PHP

This is a function i converted from another language into PHP: $vertices_x = array(37.628134, 37.629867, 37.62324, 37.622424); // x-coordinates of the vertices of the polygon $vertices_y = array(-77.458334,-77.449021,-77.445416,-77.457819); // y-coordinates of the vertices of the polygon $points_polygon = count($vertices_x) – 1; // number vertices – zero-based array $longitude_x = $_GET[“longitude”]; // x-coordinate of the point … Read more

SciPy Create 2D Polygon Mask

The answer turns out to be quite simple: import numpy from PIL import Image, ImageDraw # polygon = [(x1,y1),(x2,y2),…] or [x1,y1,x2,y2,…] # width = ? # height = ? img = Image.new(‘L’, (width, height), 0) ImageDraw.Draw(img).polygon(polygon, outline=1, fill=1) mask = numpy.array(img)

Polygon Touch detection Google Map API V2

The problem you’re trying to solve is the Point in Polygon test. To help visualize the concept of Ray Casting: Draw a Polygon on a piece of paper. Then, starting at any random point, draw a straight line to the right of the page. If your line intersected with your polygon an odd number of … Read more