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Questions tagged [web-mapping]

"Web mapping is the process of designing, implementing, generating and delivering maps on the World Wide Web ..."

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76 views

QGIS2web not updating on 3.4.5

I am using QGIS 2.18. Upon making updates to my map, the update is not showing in the export to map web page. I have updated it several times and restarted QGIS but it is not replicating my label ...
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1answer
34 views

ArcGIS Portal - Click to add a marker and get coordinates

How would this be best approached in ArcGIS Online and/or Portal? A user needs to click a point on a web map to identify a work location. Clicking the map adds a marker and also stores the XY ...
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51 views

Creating a data layer on CARTO from an ical feed?

Has anyone ever made a map on CARTO from an ical feed? Given that it uses a standard format which includes a location information, I envision that I can scrape the data into a CSV then geocode the ...
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333 views

How change legend icons size on leaflet map generated using QGIS2WEB plugin?

I need to know how to change size of icons from the leaflet web map legend generated using qgis2web plugin. Is there any icon size information inside code which I can change to larger number? I have ...
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2answers
699 views

Creating heat map weighted by population in ArcGIS Online?

I want to create a hotspot map of incidents by City but I would like to weight it by population. Is this possible in ArcGIS Online?
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1answer
597 views

Fastest way to post layer to GeoDjango map

I am porting a webmap built with HTML/CSS/Leaflet to a GeoDjango/Leaflet framework, and want to know the fastest way to display map layers. For the HTML/CSS/Leaflet map, my layers are hosted as flat ...
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1answer
78 views

Route planning with detours for “nearby” Points of Interest

I want to know if Google maps, Open Streetmap, or some alternative, lets me plan a route by foot (or bicycle, maybe also car, or even public transportation, but by foot is my initial project) from ...
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1answer
961 views

leaflet: javascript scope issue within geojson onEachFeature function

I'm new to javascript and even newer to Leaflet (version 0.7.7), so I'm having difficulty determining how to ask this question. With leaflet, when I click on a polygon, an ajax request is made, it ...
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228 views

Leaflet Map Layout

I have been learning how to use leaflet recently and have create a number of maps which have all been full screen maps. I would like to understand how I would place other features on a web page along ...
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1answer
818 views

JSONs made from shapefiles are not plotting (using folium or Leaflet alone)

My goal is to plot two shapefiles as layers on an interactive map. The files I'm using live at https://github.com/AnnaMag/maps. I transformed shapefiles to .geojson using ogr2ogr -f ... e.g. ...
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726 views

creating a transparent layer background in QGIS

I have created a heatmap in QGIS to cover my point data and I have saved it as geoTiff so that I can import into tilemill, which I managed to do but my background is black .In QGIS however I want ...
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2k views

Leaflet/GeoJSON - Changing the default blue marker to other .png files

How can I use different .png files to symbolize my GeoJSON data? I have one property in my GeoJSON file that I would like to symbolize the data by (feature.properties.issue). For each different issue ...
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1answer
1k views

Display tiles from a custom GeoTiFF overlayed on googles satellite map using leaflet

I want to overlay tiles generated from a GeoTIFF raster I created on a google satellite map. What I have tried is: Style and output a high quality colored PNG using qgis's map composer Tile this PNG ...
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3answers
575 views

Is there any web-gl js libraries for creating 3D bar overlap city map? [closed]

Is there any some web-gl js libraries for creating 3D bar overlap city map? More details: http://ny.curbed.com/archives/2015/01/09/3d_map_shows_where_nyc_housing_is_priciest_cheapest.php https://...
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1answer
9k views

How to reduce the opacity of a Google Maps layer in CartoDB.js

I have a CartoDB.js-App where I load my vis using cartodb.createVis (I do not manually define Leaflet layers). How can I reduce the opacity of the Google Maps base layer? I tried the following, as ...
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1answer
131 views

Error when using spatial query in arcgis silverlight api

I'm developing a webgis using ArcGIS Silverlight API 3.1 . I used esri interactive SDK sample for spatial query in the webgis .The problem is when i draw a freehand polygon and the polygon intersect ...
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1answer
535 views

Hover effects using CartoCSS: Is this possible?

I'm trying to make a simple map of parcels in TileMill. Right now when I hover over a parcel, the information for that parcel appears in a teaser. That's simple enough. However, when working with ...
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2answers
1k views

Zoom to Results on Map

I made a web app that displays delivery routes associated with a user-input zip code. My question is, how can I get the map to zoom to the results? Here is my code. Im thinking of some sort of zoom-to-...
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2answers
1k views

Using jquery to reset layer in OpenLayers

I've used a combination html, jquery and cql to redraw layers in Openlayers using specified parameters. This worked fine as seen here: http://www.dartmoor-npa.gov.uk/index/test-map3 I also want to ...
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1answer
5k views

Why won't this mapbox map load into a DIV container?

All, For the life of me I can't figure out why I can't load a map into a CSS template I'm trying to customize. I've placed a fiddle here: http://jsfiddle.net/mapbaker/Du7zq/10/ Basically I'm ...
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1answer
865 views

How to layer statistics from Excel onto a map?

Would another free app or program be better and easier to do this than mapbox.com ? I simply want to layer census 2010 data by shading areas onto a map like on theatlanticcities.com/posts/map/ & ...
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2answers
171 views

Web site with: google map like or GIS, one million record database and a feature to run advanced search

What is the GPL way - without or with little developing - to build a web site runnning on apache which has to feature: one million record database (MySQL; which may be editable), an advanced search ...
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1answer
638 views

Google Map layer loads tiles even if this layer is disabled in OpenLayers

Sorry for cross posting I've asked this question in OL mailing list, but not get response yet. It is very important for me to resolve this issue. I've made a little example that reflect my problem. It'...
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1answer
128 views

Add a Google Earth Enterprise globe (from geserver) to QGIS

I am managing Google Earth Enterprise, where I can add data to Fusion, push it to geserver and then publish it to Google Earth Enterprise clients on people's computers. But the people need to add a ...
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1answer
279 views

Using Leaflet Search plugin with GeoJSON layer (L.Control.Search)

I have a map with a single GeoJSON layer that I referenced in my script (using the AJAX plugin). Now I am trying to add search functionality to the map so that the user can search for features by name....
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1answer
164 views

Real time changing status of a point, web mapping [closed]

I’m new to web mapping and developing and I try to make a web map with points. The points are bank ATMs. The points will change color depending on their condition. There will be three different colors ...
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1answer
81 views

Congressional/Legislative Member Data Set [closed]

I am working on a web map of congressional and legislative districts. I am able to find the boundary lines but not up to date data on the representatives per legislative district. Anyone know of ...
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1answer
61 views

How to use CARTO map visualization in Odyssey.js sandbox

I have a story map in Odyssey's sandbox GUI. I want to use a visualization I have in CARTO as a base map for this map. How can I find my viz key? All the documentation seems to refer to an option that ...
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1answer
45 views

Carto zoom to areas in “link second layer”

I have a Carto map with two layers which I have linked using Carto's "Link Second Layer" analysis. I added a widget which lets me select the name of polygons and through this link, the map returns ...
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1answer
2k views

Mapbox GL JS set Max Zoom level not working?

I cant seem to get my map to set a max zoom level. Here is a snippit of my code - var map = new mapboxgl.Map({ container: 'map', style: 'mapbox://styles/cdickinson11/cjg49l1f305ou2rls3hd65a6s', ...
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1answer
208 views

Passing user-defined feature selection (by location) into geoprocessing widget in web app

I am creating a web based map with a custom script tool that is published as a geoprocessing service. I am using app builder to set up a geoprocessing widget, but am unsure of how to include a user ...
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1answer
2k views

Line break in a Popup box in Leaflet

How can I put a line break in the popup window in the following statement? I am trying \n and but its not working. for lt, ln, el, plc in zip(lat, lon, elev, pl): fga.add_child(folium.Marker(...
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1answer
613 views

GeoJSON layer not displaying in OpenLayers 3

I am quite new to OpenLayers so it could be something simple. I have a map with the OS tile service and a number of boundaries layers in GeoJSON and they are in EPSG:27700. I have tried for quite ...
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1answer
761 views

Web mapping after Geoserver is set up?

I have a PostGIS database with all of my spatial layers, which have then been loaded into Geoserver, styled with SLD's and put into Layer Groups. The layer preview function in Geoserver is a bit ...
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1answer
530 views

ArcGIS API for Javascript QueryTask not working

I'm trying to use query tasks to extract attributes of a feature based on what was selected from a filtering select list(setVal = "Chain Lakes Provincial Recreation Area"). But I get the error ...
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1answer
447 views

Qgis2web legend

I want to export a vector layer using the Qgis2web plugin. I styled it with the Leaflet opportunity as the legend with categories is included. However when I want to export a layer with points sized ...
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1answer
129 views

Build Interactive Web map for offline/localhost visualisation [duplicate]

I am part of a small research project where we are leading field experiments in a small watershed, on some remote location far away from our research institute. I have a series of vector data, ...
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1answer
97 views

Torque map slider formatting problem

I tried combining the code in the example below, with my own code but it does not work: the timeslider continues to count up from 0 and does not display the text alongside the number. How to Change ...
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1answer
117 views

Publishing raster image as tiles?

I have a full world image (raster) that I would like to make available, such that I can use it with a leaflet.js based web page. I have looked at GeoServer and MapServer, but from what I can tell ...
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1answer
274 views

CartoDB- popup window not working

I am working on a project, and I have not worked with cartodb long, but there is something wrong with this code. It is supposed to display a little pop window showing the school district for that ...
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1answer
24 views

How to create a web map which can't be traced back to yourself? [closed]

Hypothetically speaking (of course) say that you wanted to do a Wikileaks-style exposé of some spatial data, without it being traceable back to yourself. The data could be points, line and polygons (...
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1answer
1k views

Create buffer around point with Turf

This code is not working and I don't know why? function getlatlong(b,d){ return b,d; } function buffer(feature){ var point = { type: 'Feature', geometry: { type: 'Point', ...
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1answer
37 views

Resources for digitizing in webmap and export? [closed]

Its possible with Google Map API to draw geometries and points. And exporting as well I assume. Is there other alternatives, probably based on Java that can do the same job? I've been researching on ...
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2answers
298 views

Using pgsql2shp in server code with PostGIS installed on Amazon RDS instance

I've created a web application using the Meteor web framework, GeoServer and PostGIS. I've deployed my app on Amazon Web Services with the Meteor app and GeoServer running as 2 separate tasks on 1 EC2 ...
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1answer
260 views

Trouble getting leaflet-label plugin to work on geojson file

I cannot figure out how to get labels on my featureLayers to show in my LeafLet map for a mapbox featureLayer using the leaflet-label plugin. I thought all i needed to do was add .bindLabel('Look ...
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1answer
306 views

Change marker within leaflet map when loading data from geojson file

This section of code adds markers to my map (it works), how can I change the marker to a different icon when dealing with geojson? var cycleracks = $.getJSON('cycle-racks.geojson', function (geojson) ...
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1answer
2k views

Custom Leaflet Legend

Trying to create 9 separate leaflet legend variables for the 9 different overlays (graduated colour chloropleths) I have on a leaflet map. Each overlay will have 6 classifications of colour dependant ...
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1answer
85 views

Consumer-Facing Websites or Apps using Bing Maps

I'm researching Bing Maps for use in a consumer-facing website/app. Is there a resource that lists existing websites/apps that are using Bing Maps for the basemap? I've found examples of websites, but ...
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1answer
159 views

Do all open source web mapping platforms require programming? [closed]

I currently use a proprietary software product for my company's web mapping, however I am interested in seeing other products. I use QGIS and would like to to put my layers on the web for both ...
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1answer
448 views

Using custom xyz tiles in CartoDB?

Following this example (see the section "Use the Tiles as a CartoDB Base Map"), I am trying to add a set of xyz tiles to CartoDB, without success. I exported a EPSG:3857 png from ArcGIS, and created ...