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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37
votes
12answers
9k views

What is the state of the art in html5 geospatial applications?

I am very interested in the HTML5 canvas element for maps; work like Cartagen from an MIT Media Lab researcher looks very promising, for example. There is some interesting SVG based work at carto.net....
0
votes
1answer
59 views

QGIS2web not updating on 3.4.5

enter image description hereI 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 ...
5
votes
2answers
3k views

How to serve local maps for an offline HTML5 webmapping app?

How could one serve maps (tiles in wherever format possible) within a Android device to be consumed by an offline webmapping app also accessed within the device's browser?
1
vote
1answer
1k views

Flow mapping visualization using a road layer [closed]

I am trying to illustrate travel using a flow map on a road layer. My data is: city of origin destination number of travelers How do I use a polygon city layer (or point) and a road layer, with line ...
11
votes
5answers
24k views

Sizing Leaflet Map inside bootstrap

I have been trying to change the height of my leaflet map to a percentage inside of bootstrap but everytime I do the map will not draw. Thus, I always have to revert to px value. I'm pretty sure its a ...
2
votes
1answer
1k views

Google Maps API extract elevation value along route

I am using the Directions and Elevation Service of Google Maps, in order to extract the coordinates and the elevation along a route between a start and end point. I could set my directions service ...
0
votes
1answer
55 views

How do I adapt existing responsive web site to display Leaflet maps?

My website works well on different devices but it seems that only works with images, although I would like to show other media, like Leaflet maps and videos. Just about all pages are laid out on a ...
0
votes
0answers
15 views

Creating a map server like mapnik [duplicate]

I'm totally new to GIS and the Map engine project is been given to me. Since I'm new, I'm lacking the concepts and the way to go. Let me explain, what I need to do. My company wants to replace the ...
2
votes
1answer
46 views

Resizing Map width and height (avoid distortion)

I am working with OpenLayers library on React My first question is how to avoid distortion while resizing map width and height, The second issue is when I am changing with/height each time it ...
0
votes
0answers
39 views

Change the Color of the road dynamically

I want to use openstreet map in openlayers and i want to be able to change the color of the road dynamically. Example: Change it to red, green or yellow dynamically or depending on a value. How do i ...
1
vote
0answers
28 views

Geohash for polygons? [closed]

I have multiple large polygon datasets stored in PostgreSQL 12 and will publish them using GeoServer. I want to try to use geohash to possibly speed up the performance of serving the polygon layers. I ...
1
vote
1answer
34 views

Downloading or caching web based map service for faster access?

The Western Australia Department of Mine and Petroleum allows access to one of their online systems called Tengraph Web with which I can view tenements, major infrastructure, and topography for the ...
1
vote
1answer
42 views

How use OpenStreetMap in webpage via OSM URL without Leaflet, OpenLayers, etc?

I want to know how I can interact with OpenStreetMap in a webpage via (only HTML, CSS, JavaScript) without Leaflet, OpenLayers, MapBox or anything like them (in backend or frontend). I want use pure ...
1
vote
1answer
153 views

Set extent in a webmap Esri

I'm creating a storymap from a developers tutorial I found on Esri. The point of the tutorial is to insert an additional reference map. Everything is working well but I want the extent to closely ...
0
votes
0answers
33 views

Cannot enable offline mode for ArcGIS Online web map in order to use in Esri Collector app

I've been trying to enable offline mode in a WebMap in order to use one Collector. I reviewed the requirements here however I enabled sync and caching on my feature layer and map layer I believe. Here ...
2
votes
2answers
43 views

WFS from GeoServer on OpenLayers doesn't work

I'm trying to create participatory map but I can't basically insert a WFS into my OpenLayers frame. I searched for a lot of different solutions. My WFS does work into QGIS, I also can insert WMS into ...
2
votes
2answers
3k views

How to create 3D web application using Open Source GIS software?

I'm using OpenLayers - 2.11,GeoServer 2.13, ExtJS 3.4, and Java for developing GIS based web applications. How can we create GIS based 3d application like below attachment using opensource softwares ...
6
votes
1answer
229 views

Interactive geographic region definitions [closed]

Background An organization has regions within a province, but has no list of coordinates that define region boundaries. I would like to draw custom polygon areas on a map using a web-based and user-...
2
votes
1answer
60 views

Best approach to process thousands of TIFF files

I have a data source with a folder pyramid that contains several thousands of GeoTIFF files, about 70Mb each. I would like to process these so that I can display the map overlays on a OpenLayers web ...
3
votes
1answer
114 views

Labeling when using qgis2web

I'm having trouble getting labels to appear in a web map, both Leaflet and OpenLayers, using qgis2web. I can't get either label buffers or backgrounds to show up and even a Bold style only works in ...
3
votes
1answer
1k views

Change the colors of polygons on a choropleth map with leaflet

I have data from different countries (=polygons) from 1990 to 2012 and depending on the data value I want to map the changes with a timeline enabling the user to visualize the changes (with colors) ...
1
vote
0answers
87 views

Publishing QGIS to intranet [closed]

I have set up a basic QGIS project combining various WMS services and want to publish it to my company's intranet for everyone to use but I am a relative beginner at GIS and all the guides I have ...
1
vote
0answers
34 views

Create a map survey and download the result

I have a shapefile of our state boundary. I want people to be able to drop a pin and add their names to the pin as an attribute. From there I would like to download all the pins as a shapefile and ...
0
votes
0answers
21 views

Draping model by WMS service in Cesium

I need to show a small territory 3D model on the Globe. I have a pack of orthos and pointcloud covering it. I chose Cesium + Geoserver WMS service to show orthos at a globe. Service imported in Cesium ...
0
votes
1answer
53 views

Labels with halos become faded and transparent in CMV when using an aerial image

I am using CMV to create a web map but when I use esri's world imagery or another image service as my base map, my labels (only with halos - Aerial 10pt with 2pt halo) become faded and transparent - ...
0
votes
1answer
44 views

Sourcing static maps from web APIs

For a web app I want to source roadmap and satellite type maps from a web API which will be used with geometrical data from a database to generate reports. The reports would be viewed on screen or ...
0
votes
0answers
30 views

How to add a vector layers to my map using OpenLayers 3?

I'm trying to add a vector layer manually to my map but i receive this error: Uncaught TypeError: b.attachEvent is not a function the code is : // adding data // Define Geometries var point = new ...
1
vote
1answer
38 views

Web Mapping with Select by Rectangle and Modify Symbology?

I want to create a free/simple web map where users can click & drag to select polygons in the map, then once selected, choose a color for all selected polygons. The map should also maintain these ...
2
votes
2answers
118 views

Which web maps work best for which web services

I'm trying to do a project, where I grab data from a MySQL database, and display it onto a web map API mashup (showing a chart on the map). I want to develop an example using REST, SOAP and possibly ...
0
votes
0answers
25 views

Icons/Features disappear after removing one feature from vector Source

I am using OpenLayers 5 and i have a map which has multiple icons. When i try to remove an icon from my map, all the icons disappear at once. Code Below is to add the vector source which contains ...
0
votes
1answer
93 views

Responsive design of webmap

I created a web map with the qgis2web plugin. The map simply contains 2 polygon and 1 point layer. Since I just wanted a static map with these 3 layer I don´t use any basemap. The final map should be ...
2
votes
1answer
73 views

GDALWARP cuts off right edge of image?

I'm reprojecting GFS GRIB files to EPSG:3857 using gdalwarp. Resulting file get little bit shorter to the right so when I zoom in from zoom level 5 and higher, I can see vertical line with missing ...
1
vote
2answers
116 views

How to make line size scale dependent in OpenLayers webmap made using qgis2web?

I've made a map in QGIS v3.2 with a vector layer named "Roads." In QGIS, the line widths representing roads are set to "meters to scale." When viewed in QGIS, this behaves exactly as I want. When I ...
3
votes
1answer
321 views

Open source GIS web server

I am a proficient GIS and Python user. I would like to ask if any open source tools exist which allow for rendering of geospatial data on a website. I would prefer to avoid tools which require in-...
1
vote
0answers
45 views

Web Mercator square and not 1x2?

I can not understand why Web Mercator projection is strictly square. In my mention: We have a planet as a sphere. We have 360 degrees of longitude and only 180 degrees of latitude. That means if we ...
0
votes
0answers
43 views

GeoServer cached layers and WMTS aren't working (Error!)

After restarting Tomcat I face unworking WMTS: 400: null page on path local:3000/geoserver/gwc/service/wmts?REQUEST=GetCapabilities and unworking cached layers path of GeoServer GUI. Log: UPD error ...
16
votes
3answers
2k views

Set of standard accessibility guidelines for online maps?

Recently I've been designing maps without navigation tools like the Zoom In/Out and Pan tools, or arrows to pan north, pan west, etc. Instead, most modern mapping APIs support the direct use of the ...
4
votes
3answers
171 views

Seeking tool(set) for creating community map? [closed]

When you move to a new place, it's very useful to have maps tailored to your interests available at the click of a mouse or tap of a smart phone. The following projects are great examples of more ...
8
votes
2answers
270 views

Choosing polar projection and tiling scheme for web mapping of polar regions?

I am looking for examples of web maps focusing on polar regions (Arctic or Antarctic) preferably using a polar projection. What polar projection and tiling scheme could be used for such web mapping ...
1
vote
1answer
196 views

GeoServer GeoWebCache caching wrong resolution tiles from USGS WMS

I have a simple OpenLayers 3 map with a topo layer that is cascaded from a USGS WMS through my GeoServer / GeoWebCache system. The tile zoom level resolution is correct when the GeoWebCache is turned ...
1
vote
1answer
72 views

Hub and spoke map

I have a bunch of addresses located in a city, there is a central location which is the hub and I'm looking to create a hub and spoke map with lines coming from the hub and going to every point on the ...
4
votes
2answers
17k views

Create Fantasy Map

I'm currently looking to create a Fantasy map and share it with my friends. We have the map designed already in Flash to certain degrees of detail and able to export as a vector. We'd like it to be ...
1
vote
4answers
895 views

Free hosting of shapefiles to make an interactive map?

What is a free site where I can upload shapefiles and make my own interactive map to share with others by a link?
1
vote
0answers
49 views

Limit custom tiles to certain extent in OpenLayers

I want to fit my custom tiles at a certain region. For example let's say i have custom tiles for a certain country (example: USA) and I am using OSM or anything at all. How do i make sure that my ...
3
votes
1answer
3k views

Forming queries with node.js, PostGIS and GeoServer?

I am not sure If I got the overall web-mapping architecture right. I can easily find tutorials about each part, but nothing on how to connect them. I have openlayers in the front-end, node.js as a ...
1
vote
1answer
29 views

Identifying file format of web map layer?

I am interested in extracting data from the map layer available here. The data looks like this (I inserted linebreaks for readability): Malta_SAR normal #LineStyle000 highlight #LineStyle001 SAR ...
0
votes
0answers
23 views

Combining zip code polygons with numerical dataset in web-stack?

I need help with the overall architecture/stack of my project. I have many spreadsheets of data with zip codes, categories, and numerical values (and a ton of other columns that will eventually be ...
0
votes
0answers
24 views

Reprojection REST Service

Are there any open source projects that offer a reprojection service over REST? I know there are online converters available, but I want to deploy something on premises. What I'm looking for is a ...
0
votes
0answers
22 views

GIS Maps and Website Design? [duplicate]

I have checked already asked questions and cant find an answer. I have sucessfully digitalised my histioric maps using QGIS. My next problem as a newbie is how I should go about uploading and ...
2
votes
1answer
3k views

Leaflet center Marker AND Popup on Map viewport

I want center my marker on popup open.. and centering map not in marker latlng, but on center of marker and popup! The problem is that popup has dinamic content(loaded on click). The map size is full ...