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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Generate raster tiles from QGIS project, avoid creating redundant tiles (not overlapping a vector layer), containing only OSM basemap pixels

Context: raster tiles webmap on private server Using QGIS, I created raster tiles from a project with Generate XYZ Tiles (Directory). I basically have a vector layer with buildings and an OSM basemap ...
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1 vote
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GeoJSON or VectorTiles for dynamic large dataset - when to use which one? [closed]

Assuming that the goal is to develop a web application with a static basemap (can be raster tiles) and multiple layers, which: are stored in a PostGIS database have a big amount of features include ...
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Set up a basemap with MapServer which fetches data from PostGIS [closed]

I have set up a basic MapServer application. Now I want to use my existing tile data which are raster tiles**(jpg images in xyz directory format)** as basemap on top of which I can render my MapServer ...
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1 answer
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XYZ tiles generated with QGIS not visible when uploading on web server

I created a QGIS project and used Generate XYZ Tiles (Directory) to export the rendered image as raster tiles. Uploading the folder with its subfolder and raster tiles an FTP-Client to a web server, I ...
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2 votes
1 answer
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Creating Proportional Symbols with Leaflet

After converting the data in this table to geojson, I want to present it on the map by sizing it according to the "y_2021" values, but I get many errors like in the picture. Can you help me ...
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Plotting an image in right location (leaflet/folium)

So, I have some civil engineering plans that I'd like to plot in a web map using folium. I tried to plot the CAD files directly by exporting them to GeoJSONs. This worked OK but a lot of information ...
1 vote
1 answer
43 views

Export qgis2web map into Paddle website

I made a map in QGIS and exported it with the Qgis2web Plugin. I've got a local map with several files. The html index shows me the map as it will be displayed online. We use Paddle CMS to manage our ...
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2 votes
1 answer
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Seeking online service to quickly review XYZ tiles

I recently was approached by a layman who wanted to view a rather non-descriptive XYZ-tileset over a more relatable map like OSM. My first attempt would have been to create an html file from the ...
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Privately sharing web maps with clients

Goal: to share a web map (ideally created on ArcGIS Online) with clients that do not have an ArcGIS Online (AGOL) account, via a private link or password-protected page. Research Findings: It is NOT ...
2 votes
1 answer
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How to tell if a WFS service supports `urn` identifiers for `srsName`

Specifying a urn for the srsName parameter for a WFS GetFeatures request can be better, as it can enforce a stricter structure of the returned data. E.g. If I specify srsName=urn:ogc:def:crs:EPSG::...
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What does the height and width properties of an AGOL WebMap object actually do?

The WebMap object has a height and a width property but what do they control? What is their purpose? See the height property in the API Document See the width property in the API Document. from arcgis ...
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1 answer
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Showing images of large area in website with thousands of large aerial images hosted on remote server

To be able to use TMS service using GDAL2TIle, one has to make a mosaic of all of images first which is impractical given the fact that there are thousands of aerial images, each 3500x3500px large. Is ...
1 vote
1 answer
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Major text rendering errors when exporting via qgis2web

I'm trying to export a map to leaflet via qgis2web. I wanted to use OpenLayers, however, I cannot because it simply doesn't work. For reasons unknown, only certain layers work when trying to export. ...
1 vote
1 answer
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Unable to Cascade WMTS layer in GeoServer

I have a WMTS source in our country https://geoportal.asig.gov.al/service/wmts I am able to create a store with that and read all the layers of WMTS service, but when i publish the layer, i can't get ...
0 votes
1 answer
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Empty webmap using QGIS2web plugin on SharePoint site

I can produce my webmap using the qgis2web plugin without a problem. When the index.html file is created I click on the index.html file and the webmap opens and I can see my map content. So far so ...
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MapImage layer on SceneView makes double requests

I have a very strange case with MapImage on SceenView (3D). MapImage is always waiting for two requestes, one of which takes a long time. Should this be the case, or maybe it could be otherwise. When ...
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How to get pixel values upon clicking on a webmap published using qgis2web?

So I want to publish a web map using the qgis2web plugin on QGIS. My web map has 2 raster layers with the same footprint, one on top of the other. Now, I want that upon clicking any pixel on the top ...
1 vote
2 answers
212 views

Leaflet: Illustrate distance along path, like "measure distance" in Google Maps

In a map in a web application, I would like to illustrate distance along a path, like how it is done with the measure distance tool in Google Maps (see attached image). Is there a way to do this in ...
1 vote
0 answers
63 views

Django Leaflet Back-end Service for Map Screenshot

I am developing an application in Django using leaflet, i have a questionnaire that when user fill they type the address, and then using google address api, i fetch the address details e.g. lat/long. ...
0 votes
1 answer
222 views

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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1 vote
1 answer
190 views

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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1 vote
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72 views

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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2 votes
1 answer
106 views

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 ...
1 vote
0 answers
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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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1 vote
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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.
1 vote
1 answer
199 views

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 ...
2 votes
1 answer
216 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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2 votes
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30 views

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 ...
1 vote
0 answers
22 views

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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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 ...
0 votes
1 answer
142 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 ...
2 votes
1 answer
107 views

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

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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0 answers
108 views

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 ...
2 votes
1 answer
161 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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2 votes
1 answer
170 views

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/...
0 votes
1 answer
76 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
0 answers
87 views

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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0 answers
50 views

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
1 answer
113 views

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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0 votes
1 answer
246 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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1 vote
2 answers
459 views

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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44 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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198 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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-1 votes
1 answer
236 views

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 ...
1 vote
0 answers
546 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 ...
0 votes
0 answers
20 views

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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68 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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