google maps - Plotting POINTS using GeoJSON -


i trying plot points on map using geojson. read documention states:

you can load , display geojson file calling loadgeojson() method of data object

(https://developers.google.com/maps/documentation/javascript/datalayer )

however, sample code on same page shows:

map.data.loadgeojson( ...)

so use code example, ie: .loadgeojson() instead of .loadgeojson() ...

i have geojson data file validated using www.geojsonlint.com, ie:

{ "type": "featurecollection", "features": [     {         "type": "feature",         "geometry": {             "type": "point",             "coordinates": [                 -80.87088507656375,                 35.21515162500578             ]         },         "properties": {             "name": "abbott neighborhood park",             "address": "1300  spruce st"         }     } ] }

the code block loads above file, "url_to_geojson_file" url data shown above (verified cutting , pasting url browser; file exists , downloadable).

   try {        map.data.loadgeojson( "url_to_geojson_file" );    }    catch( ex ) {        alert("error loading geojson:" + ex.tostring());    }

nothing shows on map although map renders. no errors caught try/catch block. set center point same coordinates in geojson file. tried using .setstyle() various options no effect.

does have working example displays 1 or more points geojson data file?

i have found examples of polygons , lines have not come across simple example demonstrates use of points.

surfing web found example adapted needs. hope useful.

<!doctype html> <html>   <head>     <title>simple json test</title>     <meta name="viewport" content="initial-scale=1.0, user-scalable=no">     <meta charset="utf-8">     <style>       html, body, #map-canvas {         height: 100%;         margin: 0px;         padding: 0px       }     </style>    <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>    </head>   <body>     <div id="map-canvas"></div>   <script>   var map;   function initialize() {      //initialise map     var mylatlng = new google.maps.latlng(53.231472,-0.539783);     map = new google.maps.map(document.getelementbyid('map-canvas'), {       zoom: 13,       center: mylatlng,       scrollwheel: false,       pancontrol: false,       zoomcontrol: false,       scalecontrol: true,       disabledefaultui: true     });      //initialise base folder icons     var iconbase = '/static/images/icons/';      //load json show places     map.data.loadgeojson('http://localhost/geo.json');    }    google.maps.event.adddomlistener(window, 'load', initialize);   </script>   </body> </html>

put json below in http://localhost/geo.json file local test

{   "type": "featurecollection",   "features": [     {       "type": "feature",       "geometry": {         "type": "point",         "icon": "/static/images/icons/map-marker-do.png",         "coordinates": [           -0.53743,           53.23437         ]       },       "properties": {         "name": "cathedral",         "description": "one of european's finest gothic buildings, once tallest building in world dominates lincoln's skyline.",         "icon": "/static/images/icons/map-marker-do.png"       }     }   ] }

Comments

Post a Comment

Popular posts from this blog

angularjs - ADAL JS Angular- WebAPI add a new role claim to the token -

i have created angular spa webapi backend using adal js authentication.as there no roles in ad, need manually add role claims in order give users access different api controllers. the roles stored in database. expecting inject claim through call webapi after authentication ad. webapi code might this. identity.addclaim(new claim("role", "user")); var ticket = new authenticationticket(identity, props); var accesstoken = startup.oauthbeareroptions.accesstokenformat.protect(ticket); is possible replace adal idtoken new token? is viable solution or there other better way handle this? as initial token generated azuread, possible edit token add new claim? appreciated. graph api supporting group claims. see here: http://justazure.com/azure-active-directory-part-4-group-claims/ if @ examples on page, users assigned groups , app can check group in claims. in current version of portal, need app manifest , modify it.
Read more

php - CakePHP HttpSockets send array of paramms -

i problem when make request (i can request). $link = 'http://uri/path/?param1=1&sid=2&sid=3&sid=4' $http = $httpsocket = new httpsocket(); $res = $httpsocket->get($link); if check request pr($http); i see : [line] => /url/path/?param1=1&sid%5b0%5d=2&sid%5b1%5d=3&sid%5b2%5d=4 http/1.1 and i'm getting empty response because server doesn't know parameters sid%5b0%5d=2 when try send parameters array : $data = array('param1' => '1', 'sid' => array('2','3', '4')); i see same changes %5b0%5d - additional indexes. how fix it? unfortunately , can not change server side, if send request in browser, i'll normal response in json format. when make request, can parameters this: $param1 = $_get['param1']; $sid= $_get['sid']; tip: use diferente names parameters. have multiples sid. use sid1, sid2, sid3... update: can parameters this:
Read more

node.js - Using Node without global install -

i'm working on few node & electron (atom shell) projects , i'm curious how them work without user having install node globally. i've seen few applications including node directory in project contains node.exe binary. how go setting node project use binary? edit: thought should add, i've searched everywhere answer this, unrelated results.
Read more