geojson

问题 I have encountered a task, that requires usage of leaflet js library with geojson as data storage. And almost immediately, following problem being encountered: polygon created from geojson object doesn't display on map. While polygon, created by native leaflet method - works perfectly. Here's my code: var map = new L.Map('map'); var bingLayer = new L.BingLayer('AhVaalRWmmprMAMHj6lw18ALO-iVnIGzvkq7gYAX3U_bisCT8Q_lgGV25YOa0kiV', 'Aerial'); map.setView(new L.LatLng(51.505, -0.09), 13).addLayer

问题 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

问题 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

问题 I would like to create a choropleth map of Europe with the possibility of zooming. I would also like to see that when the user double-clicks on a country, the country in question is zoomed and divided into regions (NUTS 2), each of which is colored according to a second measure. Here an example: Suppose that Europe is composed of 5 countries: Country1, ..., Country5. Each country is colored according to the first measure (suppose the number of inhabitants). When the user double-clicks on

问题 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

问题 My django web app should do the following: Pass a Geojson object to a view, map the points with leaflet and display some additional information when the user clicks on a point marker. I'm not so familiar with js so I got stuck binding the right kind of data to click event. Here is a sample geojson object. How can I access the 'id' with my click event? var geojsonFeature = {'geometry': {'type': 'MultiPoint', 'coordinates': [[4.939, 52.33], [4.9409, 52.33]] }, 'type': 'Feature', 'properties': {

问题 Using ASP.NET MVC 3 with C# I have a web page to display a map onto which I want to add a polyline consisting of several latitude and longitude coordinates. With the Leaflet JavaScript library you can add GeoJson layers. I want to get the longitude and latitude coordinates from a Database in C# and pass the list of coordinates to the JavaScript to create GeoJson or as GeoJson . Here is an example of the GeoJson I wish to create: var polyline = { "type": "Feature", "geometry": { "type":

问题 I have some GeoJSON returned from a call to a PostGIS database. I'd like to be able to add a marker for each feature, and be able to toggle different types of marker/feature. Currently I'm using JavaScript to generate a marker for each feature, adding them to arrays according to type, and then going through the arrays setting show/hide as appropriate to toggle the 'layers'. This works OK, but I'm wondering if the new GeoJSON functionality offers a better way to do this. As far as I can see

问题 I would like to populate a GeoJson layer with data and then dynamically filter what features to show. I have gotten the filter function to work but I do not know how to change the filter and then refresh the layer. Is there any way I can update the filter after I have added the data? 回答1: I did this by adding each feature type to a different LayerGroup based on a property of the feature. e.g. GeoJSON var data =[ { type: "Feature", properties: { type: "type1" }, geometry: { type: "Point",

问题 I am working on a project where it is necessary to display maps of countries and cities using d3.js. Actually, D3 supports GeoJson format. Usually, I guess, GeoJson format is converted from some other format. I found some places with this GeoJson data: http://mbostock.github.com/protovis/ex/countries.js But, this is only a list of countries, I am looking for some service or program that gives me the ability to set an ID, get this format, and convert it to GeoJson, or get it in GeoJson better.