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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Why would anyone use ArcGIS Server instead of GeoServer/Qserver etc for a simple map? [closed]

My team is building a web application which uses maps to track various object. We should be able to draw moving entities, draw lines/ploygons, measure distances and areas. No any fancy analysis beyond ...
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Vector Tile Service VS. Feature Service

I've been watching the following Esri video: https://www.youtube.com/watch?v=ULhrWCIH0SQ And the following two slides confuse me: What is the difference between Features and Vectors? It seems that in ...
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  • 27
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WMS is for raster... What is for vector layers? [closed]

From my understanding, standards such as WMS, TMS etc are mainly used to fetch raster layers from a map server. What are the popular options for serving vector layers? Can it be tiled or not tiled as ...
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Create Extent to use in mapView.goto

I would like to use the goTo() method of the mapview, and pass it an Extent that I construct in the code. I created the extent by: const extent = new Esri.Extent({ xmax: maxX, xmin: minX, ...
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  • 113
2 votes
1 answer
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Should I use different projections to calculate distance and displaying on the Map?

I'm using the UK crime dataset provided by https://data.police.uk/ My question is about coordinate systems/map projections. The crime locations are stored with the projection EPSG 4326 which uses ...
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Seeking mapping library that supports snapping during measurements

I am building an application in which several moving items are observed and displayed on a map. One of the core features will be measuring distances between different items. While doing so, the cursor ...
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1 vote
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34 views

Create a webhosting GIS tileserver with GeoServer (or similar) on Ubuntu 18.04

I am currently developing a web application with JS, HTML, CSS (you know the drill) and I am using a local GeoServer instance to display tiff files as PNG tiles in a Leaflet based mapping environment. ...
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How can I make a click able button in geojson.io table list?

How can I make a clickable button in geojson.io table list, that will be used in webGIS map (along with table features got from .geojson file), after clicking it will direct to another webpage.
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1 answer
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Making a web map with geotagged photos In QGIS

I would like to create a web map with several hundred geotagged photos showing the location of the photos and the direction they were taken in. Using the "Import Geotagged Photos" tool in ...
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2 votes
1 answer
79 views

Populating all the data from GeoJSON to an HTML div

I have GeoJSON and I am trying to get all the data from it and display it on a div element. This is what I have been able to do so far: HTML <div class="col-3" id="graphs"> ...
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t.slice() is not a function error when adding shapefile to map via ArcGIS Javascript API

I am trying to allow a user to add a shapefile to our web mapping application via an uploaded shapefile (Shapefile or GeoJSON), similar to the example here: https://developers.arcgis.com/javascript/3/...
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Dynamic/interactive QGIS webapp [closed]

Is it possible to use QGIS + plugins to allow users to interact with maps in real time? For example, to allow users to control sliders and change buffer distances in real-time? It is easy enough to ...
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User-controlled widgets to choose style logic in QGIS [closed]

On my map, I have several rules-based styles for polygons depending on what data a user might want to look at (e.g., raw money spent per geographic boundary vs. money spent per 100,000 people per ...
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Making the marker/pin point editable or moveable in Web App Builder using URL parameters in custom website

We are making a custom website that brings over variables from a form into the map, such as a facility number, which is in an iframe currently. The map is an ESRI Web App that was created using Web ...
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52 views

Setting extents of base layers to the extents of newly added layer on the map in OpenLayers

I am querying two layers, based on which I am adding the resultant layer (having lesser polygons than the original one) on map Suppose this is the base layer, After querying, I get this resultant ...
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1 answer
70 views

Why spatial filter (DWITHIN) is not working in WFS

I am working using spatial filter Dwithin for WFS. I have worked using a simple filter using to show no of earthquake data for the year 2020 in GeoJSON format from the given WFS:- https://emidius.mi....
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Web-map file download automation

This web-map, has all the archaeological sites in Greece which can be downloaded in shapefile format. I would like to download all of them for a site suitability analysis, but the web-map does not ...
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2 votes
1 answer
75 views

Searching for waterfalls / water drops within an area of interest, return location and height

Is there a system/service for finding or searching waterfalls or "water drop" (say 1.5m drop)? Or is there another (simply) way to gain this data? finding := Input a location and drop ...
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Loading GeoJSON line geomtery layer in Mapbox not rendering properly in lower zoom levels

Tried to load a line geometry GeoJSON file from local to mapbox webmap but on lower zoom levels(5-13) line layers are not loading continuously, in higher zoom level it was working properly. Lower zoom ...
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2 votes
1 answer
99 views

Is it possible to edit a non PostGIS layer within Lizmap?

I have a running LizMap + Qgis Server configuration (but I am only the frontend admin, another dude is in charge of the backend server therefore I can't access to logs easely). Our set-up is aimed to ...
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1 vote
1 answer
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Get basic statistics from a feature server and display it in an own element in ArcGIS JavaScript

I use ArcGIS Pro 2.9.0 and ArcGIS JavaScript. I am new to using my feature sets with ArcGIS JavaScript. I have a point feature set on ArcGIS Online (https://services2.arcgis.com/iVTT0jpvWSmHS8yL/...
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41 views

Web map attribute selections?

With every web map I have seen or created (my creation experience is limited to the ArcGIS.com ecosystem) the user interacts with the web map by clicking on a map feature. For example, clicking on a ...
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1 vote
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Adding location Marker/Pins on Google heatmap

I found a great free tool from Google for creating a heatmap at - https://developers.google.com/maps/documentation/javascript/examples/layer-heatmap Is it possible for the above tool to have location ...
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Does setting appropriate SRID make diffrence to rendering peformance?

I understand that PostGIS allows us to set SRID on geometry or geography. But I am just wondering if it would actually impact the rendering performance on the client side. For instance, let's say I ...
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1 vote
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Can't retrive feature using draw interaction : featureRetriver[0] is undefined

I have a problem retrieving geometry created using draw interaction. Context : I want to make a WFS intersection from a point drawn by a user. The user has to click on a button to create geometry and ...
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109 views

Keep same ID when copying webmap / web app map from ArcGIS Portal to another one

Webmaps are shared with an URL containing the ID. Example: https://portal.com/portal/home/item.html?**id=8207f51d0c3d4b4193950beb2dcd21d4** When a webmap configuration is replaced by another, for ...
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2 answers
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How to get WMS URL from a map embedded in a webpage?

Objective I am trying to download the images (or the vector files if possible) from a map embedded in the following webpage https://www4.sii.cl/mapasui/internet/#/contenido/index.html Context To see ...
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29 views

Make point renderer in ArcGIS JavaScript to show all points at small scale

I am making an online map using ArcGIS JavaScript 4.20. I have a polygon feature that I want to render as points (I have points all over Norway, not just as this example): I am using the simple ...
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111 views

Interactive equidistant map for HAM radio application

Our local HAM Radio Club is currently using a Google Map for our rotor direction visualization software, here is an example of our app: https://linkpaste.org/visu/ Now - for obvious reasons - I want ...
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  • 109
-1 votes
1 answer
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Seeking alternative to QGIS Cloud

Host web-maps currently through QGIS cloud and looking an alternative to QGIS cloud that allows maps to be hosted in the web securely and accessed by other parties as viewers. Have already ruled out ...
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1 vote
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69 views

How to center the map view when I select and load new custom map tiles?

How to center the map view when I select and load new custom map tiles? I have made a simple web UI where I select date of maps and it will show it tiles, but the problem is, it will not zoom and ...
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Feature access service does not show fields by my arranged order

I have re-ordered the fields of my feature class on ArcMap 10.7 and published it as a hosted service, obviously with the feature access capability ticked on. I then took the REST endpoint and added to ...
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62 views

ArcGIS Online Webmap layer not displaying unless zoomed out

I have a layer as a web map that displays fine on ArcGIS. When I upload it to ArcGIS Online and have it as a web map it will not display properly unless zoomed out (other layers work fine) in the new ...
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40 views

How to use ArcGIS MapServer as basemap in QGIS to create webmap using QGIS2WEB plugin

I'm pretty new to using open source GIS software such as QGIS (my main experience is using Esri's ArcGIS products). However my current client does not have an Esri licence and so is requiring the ...
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0 votes
1 answer
55 views

Scraping route data from web map

I am hoping to find a way to extract the bus route data from the live feed maps on this site: https://transit.unitegps.com/bsoob I was able to find this by poking around in developer tools, but I'm ...
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0 votes
1 answer
306 views

Scraping data from an interactive webmap

I'm to export all of the parcel data of a specific region (the website is in Mongolian, one needs to choose "Хөвсгөл" from "Аймаг/Хот" and "Ханх" from "Сум/Дүүрэг&...
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2 votes
2 answers
182 views

Creating Webmap using QGIS

I am a market analyst working in real estate and would like to create a private webmap for internal use or to send to clients. What I would like to do is create a web map similar to this one (https://...
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How can I alter the attribute in one field dynamically from an attribute in another field, WebApp?

I've created a map in WebAppBuilder with real estates for sale, with one layer showing the expiration date. Assume, for the sake of simplicity, it's represented with three attributes: 'Ongoing', '...
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599 views

ol.layer.Tile.TileLayer is not a constructor

This is the code that OpenLayers provides for a quick startup point: import Map from 'ol/Map'; import View from 'ol/View'; import OSM from 'ol/source/OSM'; import TileLayer from 'ol/layer/Tile'; new ...
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1 answer
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ArcGIS Online Hosted Feature Layer activity log export

Is there a way to export an ArcGIS Online Hosted Feature Layer activity log? The main focus here is to establish who deleted features
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1 vote
1 answer
5k views

How to fully customise LayerControl() in Folium?

I currently have a Folium map with this LayerControl component. Would it be possible to fully customise the layer control panel? For example, I would like it to not show the map style button saying &...
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-3 votes
1 answer
95 views

Publishing 100 GB of data to a web portal

I have to publish 100 GB of data to a web portal in 2 or 3 layers using open source technologies. The data comes from ArcGIS and are polygon features. So, I can save/export the data to any ArcGIS ...
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0 votes
1 answer
93 views

Are client-side raster colour-ramps possible?

For web portals visualising single-band raster information (such as bathymetry or elevation), is it possible nowadays to have a colour map applied to the data in the browser (instead of server-side)? ...
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  • 426
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List QGIS projects and their layers as a dropdown in a web page

I have a goal of providing a dropdown on a web page in a React app that lists all QGIS projects on a remote server. I assume that server would be Postgresql/Postgis. Select one of them and you get a ...
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5 votes
2 answers
168 views

Exporting QGIS project containing many points with qgis2web: reduce loading time

What I have: QGIS 3.18 on Win 10 containing a project with: OpenStreetMap basemap Point layer (Geopackage, 5.1 MB), representing centroids of buildings of a city Point layer set to scale based ...
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101 views

Export spatial data from Web Map

I am trying to get the polygon data from the following leaflet web map http://www.cityfibre.com/rollout/. I am not really sure what kind of format I should be looking for (geojson, xml, etc..) but I ...
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3 votes
1 answer
361 views

What is the simplest way to host a qgis2web export?

I am new to hosting web maps and would like to know how I can run a qgis2web export and embed a webmap url to sharepoint or share with others. How can this be done open source?
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  • 175
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1 answer
70 views

Capture any embedded map larger than screen

I use the various map portals on the daily basis, like below: and the biggest problem is, that my capture is restricted to the screen, being precisely to the area, where the map is embedded, as you ...
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1 vote
0 answers
60 views

Is there an easy way to style KML files on a graduated colour scale based on field values when uploading to a Google Map?

I am creating a Google Map which includes one polygon layer of census output areas and one point layer. Because the polygon layer is so large and there are limitations on the number and size of layers ...
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  • 715
0 votes
1 answer
365 views

Passing a Python list of coordinates to add as markers to web map (Flask)

In my flask GIS app, I am passing my web map a list of coordinates from a route in my Python backend, which works as I expect it to. When I print the list it looks like this. [['53.792614', '-1.789202'...
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