geojson

问题 I've a question that is related to this question: I'm relatively new to python and now have started to visualize in Kibana, which I'm brand new at (as in, I've never used it before). Now I have a pandas datafram geoseries like this: ID Geometry 0 9417 POLYGON ((229611.185 536552.731, 229611.100 53... 1 3606 POLYGON ((131122.280 460609.117, 131108.312 46... 2 1822 POLYGON ((113160.653 517762.384, 113169.755 51... 3 7325 POLYGON ((196861.725 470370.632, 196869.990 47... 4 9258 POLYGON ((201372

问题 I am learning openlayers3 with ol v3.20.1 I've got to the point in the book, where I can read/write GeoJSON with StaticVector, but the following code: var statVec = new ol.layer.Vector({ source: new ol.source.StaticVector({ format: new ol.format.GeoJSON(), projection: 'EPSG:3857' }) }); errors out with: TypeError: undefined is not a constructor (evaluating 'new ol.source.StaticVector({ format: new ol.format.GeoJSON(), projection: 'EPSG:3857' })') global code I realize, there was an API change

问题 I want to insert geoJSON to a geometry column of a table. I have already inserted CSV file to the same column following this tutorial, I wonder how to insert the geoJSON to any geometry column? I tried following this answer but could not get what is going on there. 回答1: Just use an update with the function ST_GeomFromGeoJSON: UPDATE mytable SET geom = ST_GeomFromGeoJSON(json_column); The following example inserts a GeoJSON point into a JSON column and afterwards updates the geometry column

问题 I Need help to create GeoJSON custom component from React-Leaflet Write with React and React-Leaflet (last version both) The code works when write in the Map component, but I want to import/export it to split code import React from 'react'; import { withLeaflet, GeoJSON } from 'react-leaflet' import L from 'leaflet' class CustomGesJSON extends GeoJSON { getStyle(feature) { // some code } pointToLayer(feature, latlng) { // some code } onEachFeature(feature, layer) { // some code }

问题 Using Elasticsearch, say I have documents of GeoJSON polygons. I'm using the percolator (ala How to know if a geo coordinate lies within a geo polygon in elasticsearch?) to find if a point lies within a polygon. That works great! Is there any way in Elasticsearch to determine If a point lies outside of all polygons What the closest polygon that to that point? Return that polygon 来源： https://stackoverflow.com/questions/41558123/find-closest-geojson-polygon-to-point-when-point-lies-outside-of

问题 I use filters to hide or show features/markers in the Data Layer. I try to check which markers are visible after filtering, and if one property of the feature matches one property of an existing polyline (in another json file); then I decide if I show or hide the polyline also. How to know if a certain marker is visible? 回答1: You could set a custom property on the feature and toggle it as you hide and show the feature: feature.setProperty('visible', false); This would have to be done in

问题 Whats the right way to translate a geojson FeatureCollection to a es geo_shape? I have a FeatureCollection looking like this: { "type": "FeatureCollection", "features": [ { "type": "Feature", "geometry": { "type": "Polygon", "coordinates": [[[1.96, 42.455],[1.985,42.445]]] } }, { "type": "Feature", "geometry": { "type": "Polygon", "coordinates": [...] } } ] } How can I translate this into the es geo_shape . Currently I just index it like that (dropping type: Feature and type:

问题 I am trying to create a d3 SVG that draws a map of New York State and scale it so that it fits the size of my SVG, the issue I am having is that when I use .fitSize([height, width], mapObject) it only returns a NaN error in the console. the topoJSON file of NYS I am using I am able to get the map to display without scaling but of course, it is not optimized and needs to be scaled I have attempted what is said in this post but I have not figured out the correct solution var map = d3.json('./ny

问题 Summary I want to to properly index (ingest) geo data (Geometry, GeometryCollection) as GeoShape in ElasticSearch using C#, Nest and NetTopologySuite (NTS) from GeoJson files or string representations. I'm using the following stack: ElasticSearch 7.10.1 NEST 7.10.1 NetTopologySuite 2.1.0 NetTopologySuite.IO.GeoJSON 2.0.4 In my GitHub GIST you can find the two sample files (postal-area.geojson and the geojson file as a sample for Scenario #7) along with the code presented bellow with what i've

问题 I have a pandas dataframe that contains Longitude,Latitude, City, State,Timestamp. I have created one additional column as geometry that is a combination of [Latitude,Longitude]. I wanted to generate a geojson file that contains geomatory information on basis of city something like that https://github.com/adilmoujahid/kaggle-talkingdata-visualization/blob/master/input/geojson/china_provinces_en.json 回答1: You can iterate through all rows of the dataframe and build up a dict with the geojson