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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votes
2answers
500 views

R get_map returns map correctly, but filename argument does not work?

In R library ggmap there is a function get_map which saves a file (or at least have saved files automatically two or three years ago). Now get_map is not saving anymore, although the parameter ...
0
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1answer
757 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 ...
-1
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1answer
164 views

Possibilities to integrate vector and raster files within a webmap [closed]

How can vector and raster (georeferenced image) data be integrated within a webmap (Leaflet, OpenLayers) and which infrastructure/architecture (Server, Database) is required? As far as I know these ...
2
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1answer
683 views

How can I update geojson properties using popup leaflet?

I have GeoJSON file named json_point2. This file holds point data as follows: var json_point2={ "type": "FeatureCollection", "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:...
4
votes
3answers
1k views

How to create a time series GIF web map?

I found a web map on the New York Times showing early spring conditions throughout the US. I've seen a much more complicated time-slider widget that can be used with ArcGIS Online web maps, however, I ...
1
vote
1answer
462 views

Is there API for Esri Story Maps?

I want to create an Esri Story Map and integrate/include an own web map. I would prefer to create both the web map and story map using an API so that I can programmatically develop the maps. Is ...
0
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0answers
476 views

How to change the map scale units for ArcGIS Online printable maps?

I have a web app created from the ArcGIS Online Basic View template. I added print functionality to the web app as seen in figure 1. You can see in figure 2 the scale units are set to miles/kilometers ...
1
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1answer
623 views

Leaflet GridLayer Vector Slicer with GeoDjango GeoJSON DOM

Overview I am trying to use Leaflet's GridLayer Vector Slicer to split up a geojson with complex geometries being passed to my webmap via GeoDjango. I can't seem to get the tiled GeoJSON to display, ...
0
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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?
1
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2answers
164 views

Creating an Offline USGS Map Viewer

What steps would I need to take to create an offline 7.5 x 7.5 min USGS Map Viewer similar to this but entirely dependent of an external hard drive for the large data/PDFs? It unfortunately, has to ...
2
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0answers
139 views

Using RasterLite in a Cordova App

I would like to use RasterLite data in a Cordova-based App but don't know the right tools to achieve this. The [Geopaparazzi Project] uses SpatiaLite files generated with the rasterlite2 library to ...
1
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0answers
69 views

Setting up web geodatabase? [closed]

I need some advice regarding setting up a web map service/database. I need the database to have certain properties: It can be displayed as a web map with certain layers that I made in QGIS. So that ...
0
votes
1answer
595 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 ...
1
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0answers
147 views

Leaflet displaying oddly curved TMS tiles

I'm trying to display some data using arctic ice extent data (projected in EPSG:3413, NSIDC Polar Stereographic North). I have processed the distributed images using gdal2tiles with the following ...
1
vote
0answers
516 views

How to serve a PostGIS based web-mapping app on shared web-hosting [closed]

I am an unexperienced-in-web GIS enthusiast trying to figure out the fundamental principles of web-mapping. So far, I've learned everything from the scratch with help of answers I got here an there. ...
1
vote
0answers
53 views

ArcGIS API for JavaScript: Graphic does not display in IE10

I have recently created an application using the ArcGIS API for JavaScript. The application contains a geocoding functionality in which a point graphic is supposed to display showing the matching ...
1
vote
1answer
118 views

How to get next/previous layer in leaflet?

I want to create buttons to get next/previous layer but i don't know how to build code to make it possible. var bounds = [[0,0], [2048,2048]]; var floor0 = L.imageOverlay('img/Floor-00-map.png', ...
-2
votes
1answer
1k views

Connect a website to a postgresql database [closed]

I am using pgadmin 3 software for database. I would like to connect this database to my website so that I can retrieve ,add delete database entries from the website
2
votes
2answers
1k views

Convert UTM to Web Mercator

I'm looking to programmatically convert UTM to Web Mercator (a.k.a. Spherical Mercator, EPSG:3857, EPSG:3785, OpenLayers:900913). I'm looking for the algorithm, or something that runs on iOS (Swift, ...
2
votes
0answers
114 views

In QGIS Web Client - How to click on a photo in an attribute table and load into a new browser tab?

I have a map loaded into my QGIS web client, and have images loaded into my attribute table for a specific layer. Works great - when I click info on one of the layer attributes, it shows the image. ...
1
vote
1answer
107 views

How to publish generated tiles to web?

For example I have some large TIFF file, then I build tiles from it using gdal2tiles, then I need to share this tiles with my colleagues. One of the options is to comress tiles to .zip archive and ...
2
votes
0answers
187 views

point in multiple polygons

I have a point (lat/lng) and a collection of geofences (polygons / circles / rectangles) Simply put, I want to know if the point is inside ANY of the geofences, it's not important which one. I know ...
1
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0answers
110 views

What tools exist for web-mapping line or polygon chloropleths over time?

In my survey of timeslider web-mapping plugins I've mostly seen a focus on mapping different geometries over time, in particular points (e.g. Torque.js). I want to create a choropleth map with 1000-...
1
vote
2answers
208 views

Create web map from QGIS workspace [closed]

I need to know how to create a web map of one QGIS workspace. Actually I want to provide a link and share it to web.
1
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0answers
194 views

How to query raster data using a polygon in a web environment

I'm struggling with the following; I am setting up a web mapping environment using Leaflet. In the front end I use Javascript and the back-end is build with Python. When clicking or drawing an shape ...
1
vote
1answer
505 views

How to publish Qgis2threejs output online?

I want to have something like this: http://maps.navigasi.net/examples/stack_layer/soil_layer.html , my problem is because when i put the Html file outside of the original directory it does not run.
1
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0answers
45 views

What's the best way to represent a Year field in Enterprise Geodatabase & Web AppBuilder?

I have a Fiscal Year Start field in a Feature Class which is shared as a Feature Service in a Web Map > Web Mapping Application (built with Web AppBuilder) workflow. The field must only contain 4-...
1
vote
0answers
28 views

open-source web mapp [duplicate]

What is the most easy way for a noob guy in coding to create interactive web-maps ? In GIS field I've worked with QGIS as open-source software, but keept my project on desktop. In my research I've ...
1
vote
1answer
107 views

Add a Panoramio-like layer to ArcGIS Online map

I am interested in integrating some type of Panoramio-like layer into a map on ArcGIS.com. My objective is to be able to use the qualitative, place-based data offered by the photos with students who ...
1
vote
0answers
21 views

Web-mapping a PostGIS database [duplicate]

I have a PostgreSQL/PostGIS spatial relational database for my university project with objects, their coordinates and attributes (1:n, n:m relations). I would like to map my spatial objects online and ...
0
votes
1answer
2k views

Search function in my leaflet map [duplicate]

I am trying to have a search function that will search through my geojson file. The geojson file was upload successfully.I used one of the examples I found here, my problem is this error : Uncaught ...
0
votes
0answers
14 views

connecting a database to a map [duplicate]

I have data about some monuments (date of construction, and other historical information), and I would like to build a sort of visual database to be put online, in which a series of markers should ...
0
votes
3answers
2k views

Displaying hundreds of thousands points on web map?

I'm dealing with around 150,000 points on a map. My customers need to see all the points, wthout clustering. I tried Openlayers and Mapbox GL Js, both have the same issue: its memory costs are huge! ...
1
vote
2answers
620 views

Interactive shapefile based map

I'm developing an interactive web-based navigation application which user can search locations and navigate from point A to point B by an online map. The routing algorithm (find shortest trajectory ...
2
votes
2answers
92 views

Determining how interactive web map was created?

I found this on github, http://mbostock.github.io/d3/talk/20111116/airports.html, with no map credits. Does anyone know how this interactive web map was created? I need to make a map in this style ...
1
vote
1answer
1k views

How to use a DTM (Geotiff) as web based basemap?

I created a DTM as geotiff and I want to use it at basemap in web based virtual globe Cesium. How can I carry out this task? Cesium has a terrain provider and it requeries an URL for basemap. How can ...
0
votes
1answer
528 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 ...
0
votes
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 ...
1
vote
2answers
128 views

Loading a web map from ArcGIS Portal on-premise

In my application, I have a few navigation tabs. Each tab loads a web map from Portal for ArcGIS on-premise. When each tab is clicked, it asks for the Portal credentials in order to load the maps. ...
3
votes
0answers
256 views

mapnik-vector-tile produces tiles with only one feature

I've written some C/C++ code to wrap mapnik-vector-tile and produce a mapbox vector tile from GeoJSON. mvtc_return * mvtc_from_geo_json(const int tile_size, const ...
0
votes
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, ...
1
vote
0answers
62 views

Publishing maps using webhoster?

To publish my map projects I simply used qgis2web or QGIS Cloud but now I need more advanced features for more maps. Now I'm wondering, could the web space I've got from 'All-Inkl.de' be useful to ...
2
votes
0answers
258 views

Consuming GeoServer UTFGrid output in OpenLayers 3 ol.source.TileUTFGrid results in error processing response object

GeoServer now supports UTFGrid outputs for layer services. This is great however the support for consuming them seems incomplete in OpenLayers 3. I set up a simple map to attempt this but can't get ...
0
votes
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 ...
1
vote
1answer
210 views

Collaborative map editor tool for non-technical users with OSM basemap?

I'm looking for a tool to allow non-technical users to create map polygons based off printed maps, and export them into a geographiclal format. It should be based on OSM base tiles (to avoid ...
1
vote
1answer
517 views

Diagrams not displaying in QGIS2web

I am trying to create a web map using the QGIS2WEB plug-in from an existing map. I am new to QGIS and I don't know if this is possible? When I try to export the map as a web map either in Openlayers3 ...
0
votes
0answers
756 views

Maintaining default value for fields in ArcGIS online map / feature service

I have an enterprise geodatabase within which there are several feature classes that contain subtypes and domains. A web map has been created from this geodatabase on ArcGIS Online and it is used for ...
1
vote
0answers
170 views

Changing symbology of layer created using Select Tool using arcgis web app

We have an arcgis online app that allows users to select features with the option of 'create a layer'. When the new layer is created from the selection it mimics the symbology of the original layer. ...
0
votes
1answer
149 views

Adding button zoom to map using OpenLayers 3? [duplicate]

I am a beginner in web programming using OpenLayers 3. In my project i want to add a button to zoom in the map by clicking or selecting a part in the map using OpenLayers 3.
2
votes
1answer
204 views

Add Join Widget

I am trying to build a web application on ArcGIS online and was wondering if anyone knew of a widget what would allow me to join data from one file to another based on a attribute. I know there is a ...