Questions tagged [web-mapping]
"Web mapping is the process of designing, implementing, generating and delivering maps on the World Wide Web ..."
1,032
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Get polygons from JSON request in an ArcGIS webmap
I'm trying to scrape some polygons from an ArcGIS webmap, and outside requests/ REST API don't work. I want to take the polygons I see in the webmap and turn them into a shapefile.
The webmap of ...
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18
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GEE published App not working [closed]
I have this script that run fine in Google Earth Engine code editor but as I publish the app it does not work:
// Load Landsat image of 2010
var l7 = ee.ImageCollection("COPERNICUS/...
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41
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Adding online map to QGIS
Looking for info on how to add the web mapping services from the Greek Archaeological Cadastre website to QGIS.
There appears to be no way since there is no WFS/WMS link to add but do you have any ...
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27
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Extracting spatial information from a web map
I'm trying to extract spatial information from this website:
https://www.ausgrid.com.au/Outages/Current-Outages
Basically, they have a map showing all current outages and I want to get spatial data ...
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51
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Creating a HTML webmap using both ESRI JavaScript API and Leaflet
I have created an ESRI JavaScript based map. It is reading in a webmap from my ArcGIS Online account and works as is required.
I would like to include some additional context to my webmap through the ...
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20
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QGIS webmap popup links
I have used the QGIS2Web plugin to create a Leaflet web map. I have successfully incorporated into the webmap popups 1) photos; 2) URLs which open external websites in a new tab of the browser. I now ...
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32
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Creating offset lines
I have a dataset of coordinates describing central lines of various roads (distanced by +-1m).The goal I would like to achieve is that based on a given coordinate and "traveled" distance I ...
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32
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What kind of storage for my webgis app
I'm making a WebGIS app where users will be able to upload and visualize the data on a 3D map (with Cesium). It will be DEM, DSM raster files. For this webGIS app I have a Nodejs server for all the ...
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16
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Can't use fit() in OpenLayers
I am trying to display a map of the USA in OpenLayers, and am trying to fit it to a layer. I tried map.getView().fit(Usa.getSource().getExtent()); but that didn't do anything. I thought that maybe the ...
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Upload already created SLD styles in GeoServer
I have locally created some SLDs and uploaded to the GeoServer corresponding 'styles' folder
The idea is not to go through the GeoServer user interface to create the styles again (copy and paste via ...
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177
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Pushing Foursquare's Swarm Check-In Data into a Google Maps Service
I've been using FourSquare's Swarm app to track my travels. I'd like to be able to plot the check-in locations on a Google Maps service (or any other web-based service outside of the Swarm App). I've ...
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55
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Equivalent to Google "my maps" for larger datasets, access-restricted webmap without a custom website
I know how to upload a KML file to create a google "my map" and share it privately via Google Drive. I want to know how I can do this for larger datasets that exceed the Google "my map&...
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Prevalence of Cloud Optimized GeoTIFFs as standard for online maps
OpenLayers is the only JavaScript library I have found so far that supports Cloud Optimized GeoTIFFS out of the box.
Is it common practice to expose data simply as a Cloud Optimized GeoTIFF without ...
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43
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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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56
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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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543
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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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166
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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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141
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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 ...
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125
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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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71
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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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419
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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 ...
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100
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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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59
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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 ...
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67
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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. ...
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42
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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 ...
- 1,119
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345
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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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2
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630
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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 ...
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89
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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.
...
- 2,271
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771
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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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809
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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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0
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247
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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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386
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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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176
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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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43
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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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396
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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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1
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375
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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">
...
- 339
2
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37
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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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23
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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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128
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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 ...
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345
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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
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1
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167
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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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235
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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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334
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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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144
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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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158
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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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58
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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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235
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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 ...
- 31
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430
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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 ...
- 1,094
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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 ...
