maps

问题 Is it possible to apply different color to different noise markers while clustering using here maps api? There's a theming option available, but that applies to all markers. I would like to set a specific color to specific point based on certain conditions. 回答1: This is certainly possible using a custom theme. The definition of the H.clustering.DataPoint object includes a data() method which can hold arbitrary data. When you prepare your dataset you can add it as shown: var dataPoints = [];

问题 I have a unique problem re: projections and obtaining lat/lon coordinates from an image. I have an 800 x 600 pixel image of the U.S., and I know the projection (Polar Sterographic with a -75 lon center of origin), lower left lat/lon, and upper right lat/lon of the image. I've put the image into a webpage and I am able to mouse over the image and obtain the x and y "pixel" coordinates from the image in the div tag. Is there a simple formula to help obtain the lat and lon of the x/y pixel

问题 I have a unique problem re: projections and obtaining lat/lon coordinates from an image. I have an 800 x 600 pixel image of the U.S., and I know the projection (Polar Sterographic with a -75 lon center of origin), lower left lat/lon, and upper right lat/lon of the image. I've put the image into a webpage and I am able to mouse over the image and obtain the x and y "pixel" coordinates from the image in the div tag. Is there a simple formula to help obtain the lat and lon of the x/y pixel

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I want to place the pins on my Google Maps map with a variable containing the location, when I make one like this, my pin works. var imageDriver =

问题 Hi I have written a piece of code which allows the program to take a postcode from a text box then type it into Bing for the user. This works perfectly fine when I use www.bing.com but if I was to use http://www.bing.com/maps/?mkt=en-gb so that the postcode is type directly into Bing maps then it crashes. I have included a copy of my code which works with the standard Bing search but would like some advice on allowing the program to search directly into Bing maps without the program crashing.

问题 Am using google map javascript for my hybrid webview app. When i zoom out map till 0 , it will show gray area while map tiles will be on center of the screen. Is there any way i can fix this to avoid the gray area? I have tried using map tile image for background but is noticeable when you move map. I have also tried setting minZoom to 2 , but still if i scroll map the gray area will be visible. Or is it possible to prevent scrolling map area when zoom is '2`? MinZoom default MinZoom 2 I

问题 I am working with the Google Places API (https://developers.google.com/places/documentation/search), and have generated a new Google API Key with 'Any IP Allowed'. When I try to get the results of the API service URLs below, I am getting a REQUEST DENIED error. https://maps.googleapis.com/maps/api/place/search/json?location=-33.8670522,151.1957362&radius=500&sensor=false&key=AIzaSyA3vtFM8AMlIO853ra82KzryBs752VIWts https://maps.googleapis.com/maps/api/place/search/xml?key

问题 I have some code that detects when the market is dragged inside and outside of a circle. This works great but I was just wondering how I can have one market and multiple circles detected instead of just one. Here is the current code: var mymap = L.map('mapid', { center: [50.895763, -1.150556], zoom: 16 }); L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1Ijoic3RldmVuc2F0Y2giLCJhIjoiY2p5eDR6MWgzMHRvbjNocnJkN2d2MjRwaSJ9.wd0OtBUQQfUtNxdduQA3lg', { maxZoom: 18

问题 Hi guys and girls if any :)) this piece of code creates a null pointer exception I would like to put a couple of markers in MO LAT = Double.parseDouble(PartA); LNG = Double.parseDouble(PartB); LatLng Standort = new LatLng(LAT, LNG); MO[y] = mMap.addMarker(new MarkerOptions() .position(Standort) .icon(BitmapDescriptorFactory.fromResource(R.drawable.kreis))); builder.include(MO[y].getPosition()); Array type expected - found com.google.android.gms.maps.model.maker Definition private static

问题 Is there a math function of some kind in Swift (or maybe multiple functions that work together), where I can create sets of ordered pair coordinates, and then pass in a single ordered pair coordinate to get a bool true/false of whether it's within the bounds of the set? I'm not the greatest at math, so I'm hoping someone who is (and understands how to solve this problem in Swift) can help me out here. Example data: I have a coordinate where someone is located in lat-long. Let's say (28