geojson

Parsing and plotting GeoJSON in Google Maps v2 Android

 ̄綄美尐妖づ 提交于 2019-12-05 19:22:21
I have a nice big 27 MB geojson file lying on my SD Card. I has got a large number of features, geometry etc. As I was searching the web I didn't find any support for GeoJSON and Shape Files in Google Maps in Android natively. I want to plot all the geometry on the map (we can optimize it later to show some of the geometry) like point, line, polygon etc. Do I need to write a parser on my own or did I fail to find support of geojson in Google Maps API for Android? Try using the Google Maps Android API utility library. It contains classes that will parse and handle your GeoJSON data. https:/

Draw lines between markers in leaflet

天涯浪子 提交于 2019-12-05 10:52:32
问题 I'm trying to insert lines between markers (which are generated from JSON data) in leaflet. I saw an example, but it doesn't work with JSON data. I can see the markers, but no lines appear. var style = { color: 'red', fillColor: "#ff7800", opacity: 1.0, fillOpacity: 0.8, weight: 2 }; $.getJSON('./server?id_dispositivo=' + id_device + '', function(data) { window.geojson = L.geoJson(data, { onEachFeature: function (feature, layer) { var Icon = L.icon({ iconUrl: './images/mymarker.png', iconSize

Search all polygons that contains a series of points in mongodb

核能气质少年 提交于 2019-12-05 03:53:06
问题 My question is similar to this one Given a set of polygons and a series of points, find the which polygons are the points located I have a mongodb database with two collections, regions that stores a set of polygons (italy provinces), and points that stores a set of specimens each with a coordinate pair. I am using mongodb 2.4 and GeoJSON format to store data, both collections have a 2dsphere index. I am able to find if a given point is inside a given polygon. Now I would like to find all

How to draw GeoJSON in Apple Maps as overlay using Swift 3

醉酒当歌 提交于 2019-12-05 01:44:08
问题 I am trying to draw the following GeoJSON data as an overaly in MKMapView. The GeoJSON File is as below. { "type": "FeatureCollection", "features": [ { "type": "Feature", "properties": { "Name": "line1" }, "geometry": { "type": "LineString", "coordinates": [ [ 76.35498046875, 25.145284610685064 ], [ 81.36474609375, 25.06569718553588 ], [ 83.91357421875, 23.301901124188877 ], [ 82.001953125, 22.004174972902003 ], [ 78.33251953125, 21.248422235627014 ], [ 76.31103515625, 21.268899719967695 ] ]

Drawing already projected geoJSON map in d3.js

隐身守侯 提交于 2019-12-05 01:32:27
问题 With the v3 of d3.js I am having problems drawing a map using geoJSON data. The code and the resulting map is shown at: http://bl.ocks.org/73833ec90a8a77b0e29f. Using v2 of d3.js this example generates a correct map. My data is already projected (they are Dutch National Grid/Rijksdriehoekstelsel coordinates). In order to compensate for this I wrote my own projection function that just translates the coordinate system of the map to pixels (e.g. scaling and translation). d3.geo.path() in v3 of

loading a local GeoJSON file and using it with the Google Maps Javascript API v3 data layer

时光毁灭记忆、已成空白 提交于 2019-12-05 00:33:26
问题 I have created a JSON FeatureCollection that works in the DataLayer: Drag and Drop tutorial. It is just a collection of 2 roads so far, but I cannot figure out how to get the JSON file to load. It is a local file for now, so I thought calling it up and styling it ala tutorial would put me on the right path. But it isn't working. Here are the HTML and the JSON files. <!DOCTYPE html> <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <title>FMRE Main Map</title

Python - Folium Choropleth Map - colors incorrect

与世无争的帅哥 提交于 2019-12-04 21:26:10
My problem is that suburbs are not displaying the correct color on the Folium map. For example, Dandenong and Frankston should be shaded with the darkest color as they have the highest count in the dataframe, but they are shaded with a lighter color. The dataframe is missing some suburbs. Those suburbs are being colored with the darkest color. Another problem is the csv has all suburbs in UPPERCASE but the geojson has a mixture of cases such as "Frankston", "St Kilda", or "McKinnon". It would be helpful if the choropleth code didn't care about case. I can change the text in the dataframe to

How to serialize and deserialize geojson in C#

旧时模样 提交于 2019-12-04 20:37:20
Am trying to Deserialize an object to json where the location details should be converted to geojson format. Tried to achieve this using geojson.net nuget package but am not able to acheve the same. There are no examples available for geojson in net. My Object from request: public class Request { public int Id { get; set; } public string Name { get; set; } public Fence Fence { get; set; } } public class Fence { public int Type { get; set; } public List<PValues> Values { get; set; } } public class PValues { public double Latitude { get; set; } public double Longitude { get; set; } } I want to

Shiny renders a responsive rCharts leaflet map once, but is blank if you change the input variable

房东的猫 提交于 2019-12-04 20:21:05
I am producing a Shiny App that produces a leaflet (rCharts) map depending on which bus route you pick. Everything renders perfectly at first glimpse, but if you change the route number, an empty map appears (not even a tilelayer). This isn't specific to the route number. For example, I can pick any route number to produce the first plot successfully, whereas the second plot, regardless of route number, is blank. Has anyone come across this before? Is there a workaround? Here is a simple example. ui.R: library(shiny) library(rCharts) shinyUI(fluidPage( titlePanel("Responsive Leaflet Map using

How do I get the area of a GeoJSON polygon with Python

给你一囗甜甜゛ 提交于 2019-12-04 20:16:47
I have the GeoJSON { "type": "FeatureCollection", "features": [ { "type": "Feature", "properties": {}, "geometry": { "type": "Polygon", "coordinates": [ [[13.65374516425911, 52.38533382814119], [13.65239769133293, 52.38675829106993], [13.64970274383571, 52.38675829106993], [13.64835527090953, 52.38533382814119], [13.64970274383571, 52.38390931824483], [13.65239769133293, 52.38390931824483], [13.65374516425911, 52.38533382814119]] ] } } ] } which http://geojson.io displays as I would like to calculate its area (87106.33m^2) with Python. How do I do that? What I tried # core modules from