"Web mapping is the process of designing, implementing, generating and delivering maps on the World Wide Web ..."

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54
votes
15answers
8k views

How to Start Web Mapping?

I want to start working on a web map at work to map some of our statistics by city. I have an idea, but I'm not exactly sure where to start. Are there any definitive resources that provide step ...
116
votes
16answers
41k views

How do various JavaScript mapping libraries compare?

I am working on a web-based mapping system and I'm trying to figure out the best/most appropriate library to use. There are a few of them about and they each have pros and cons. Even after trying a ...
17
votes
4answers
1k views

How do GIS web apps work?

I am completely new to GIS and therefore have questions regarding how the GIS Web development should be made, because the entire concept still confuses me. So, imagine I have a map. And by this, i ...
24
votes
3answers
6k views

Alternatives to ArcGIS Online?

I am considering purchasing ArcGIS Online for a group of users who currently use about 5% of ArcGIS capabilities (ArcMap, simple map creation and information display) about 80% of the time. Primary ...
19
votes
4answers
5k views

Maximum number of point features in an OpenLayers vector layer

In your experience, how many point features can be added to an OpenLayers vector layer (new OpenLayers.Layer.Vector("Point Layer")) before it goes unusably slow? My use case is to display points from ...
14
votes
2answers
4k views

How can I switch baselayers as a user zooms in to the map in OpenLayers

I have a map which overlays Open Street Map data on imagery for Pennsylvania. As a baselayer to the roads (and eventually other layers) I have two baselayers - Blue Marble NG and USGS EROS 1ft ...
43
votes
3answers
9k views

Openlayers Animation Examples and Algorithms

i wonder for a long time if people in this community uses openlayers for animation needs. we have know this that animating on browser is a little bit exhausting for it but when a map meets with ...
18
votes
7answers
4k views

What are my options for 3D web Maps?

I wish to have a Online 3D Map, which would show my Data, i.e both Raster and Vector, draped on a DEM that I have. Due to the requirements of using my own DEM & Raster data, Google Earth API is ...
3
votes
4answers
2k views

List of Map Service Software

I am curious as to what GIS server software is out there. I have used a few different ones and am building a list of them. If you know of any others please mention it below because I would like to ...
11
votes
2answers
568 views

Web-mapping with editing capabilities?

I'm embarking on a new web map project that seeks to display simple geometries (lines, points, polygons) and rasters/basemaps. Ideally, the map will also allow authorized users to add/remove/edit ...
43
votes
8answers
7k views

How to create Vector Polygons at the same amazing speeds GISCloud is able to render them?

EDIT (outlining new bounty added): I have added the largest bounty possible to this question in hope of getting a very detailed answer. Your solution should outline a step-by-step guide utilizing open ...
26
votes
2answers
14k views

EPSG 3857 or 4326 for GoogleMaps, OpenStreetMap and Leaflet

The discussion at What is the difference between WGS84 and EPSG4326? shows that 4326 is just the EPSG identifier of WGS84.. Wikipedia entries for Google Maps and OpenStreetMap shows that they both ...
19
votes
7answers
7k views

Options for displaying PostGIS vectors in OpenLayers

I am very new to web-mapping, so this question may be a little misguided. I want to have a very simple web interface using OpenLayers (or even Google Maps if that will be easier) which can display a ...
11
votes
2answers
2k views

Understanding web mapping tools

Before I start, this is going to be a general question but with specific cases. I've been trying to understand GIS tools and applications to achieve the following: Build my own basemap Publish the ...
10
votes
5answers
3k views

How can a 3D model of a building be displayed in a web-browser?

I would like to try to show a proposed building in a web-browser such that the user can interact with it in a way similar to google maps streetview. Is it possible to do this, in any platform? I can ...
7
votes
4answers
833 views

Building a disconnected web based mapping application

I have been tasked with building a disconnected, web-based mapping application. It must run in a browser, but it will run on a disconnected Windows based laptop. It needs to be able to do simple map ...
10
votes
4answers
985 views

Completely Brand New to GIS - Help picking technology from the pros

I'm new to GIS and need to learn for an internship. I've been reading a lot and now need help picking technologies to use... particularly the map serving tech. Project Requirements - Free Web ...
7
votes
3answers
320 views

Create interactive map with no server

I have managed to build a great web mapping application using tiles created from GeoWebCache and a custom gridset, but I now need to add an overlay to the base maps. The only interactivity I need is a ...
22
votes
9answers
1k views

Good Symbology for Interactive Web Mapping

When a user clicks on a map what should they expect to see? I would say a symbol for where they clicked. A pushpin seems to be the most accepted icon for generic data. Google has pushed the upside ...
25
votes
4answers
1k views

Switching career from GIS Technician/Analyst to GIS Web Map Developer/Programmer?

I am a GIS Analyst at work that dabbles in python scripting in ArcGIS and the Google Maps JavaScript API V3. My professional goal is to either be in web mapping development or desktop/server GIS ...
8
votes
10answers
3k views

Web GIS Development Skill Sets [closed]

What technologies and skill sets should one who wants to do web GIS development study/acquire? One skill/technology per answer please.
38
votes
4answers
5k views

Why has Web Mercator (auxiliary sphere) become the web map standard?

I understand what the difference is between the Web Mercator projection and Web Mercator Auxiliary Sphere (WMAS). I also understand that both Google and Esri have adopted this projection as their ...
19
votes
5answers
1k views

Looking for a developer-friendly web gis

I'm a recent Computer Science graduate who prides himself in his knowledge of software development and problem solving, but has no idea how gis systems work. (Read: I'm a programmer) I've been ...
12
votes
5answers
2k views

Looking for a FREE Cloud based 'Web Mapping Stack' Host

Any pointers to free cloud-based geoweb hosts? Use case: To display a basic interactive web map in Leaflet/ OpenLayers with data hosted in PostGIS served by GeoServer. I am looking at something very ...
12
votes
2answers
5k views

OpenLayers alternatives supporting more client-side features

I am considering different architectures for a system that will ideally use client-side rendering for point features and must be plugin-free. I have been using this application developed in response ...
5
votes
3answers
1k views

Developing Web Application For Map

I have huge data of maps usually most of the table are co-ordinates and the other are raster maps stored in SQL server 2008 and PostGres Server. I am using desktop application to analyse the data. ...
14
votes
4answers
414 views

Is there a FOSS solution for legend parsing in a web mapping environment?

Our web mapping requirements are fairly standard - some basic querying and the ability to print out the resulting map (or save the image). Typically we've used ESRI products in the past (right now ...
12
votes
10answers
883 views

GIS and natural disasters - examples of geo-visualizations and geospatial analysis

I stumbled upon NY Times' web map of deaths from tornadoes in US. Can you point me to some more interesting examples of geo-visualization and/or geospatial analysis of natural disasters and their ...
7
votes
7answers
2k views

Where/How to Learn about Getting Started with Web GIS [duplicate]

Possible Duplicate: Steps to Start Web Mapping Does anyone know of any classes or resources where I could learn about WebGIS? I'd like to learn the steps and technology involved. I'd be ...
5
votes
2answers
3k views

Animate feature in openlayers

In my map web app, I have a play pause button that show vehicle route history.I get lat lon from database and create route that vehicle traverse. At below site go to history tab after and choose ...
9
votes
2answers
1k views

Restrict pan and zoom in ArcGIS Javascript API?

I'm creating a web map of a university campus. I have the map functioning, but I don't want to be able to pan off of the basemap, into whitespace. Do you know of a function that will auto-pan the ...
7
votes
6answers
657 views

Maps zoomed around specific locations (magnifying glass effect)

How do I create a static map where the scale varies based on location? Example: to drive from a specific location X in Albuquerque to a specific location Y in Chicago, I want to "zoom" around X and ...
4
votes
1answer
1k views

What is the best way to connect spatial data with attributes in Excel table?

I have many attributes which are stored in an Excel table. They refer to USA counties. I need to somehow connect those attributes to polygons in some format (don't know which is the best) and ...
2
votes
3answers
2k views

Render vectors from OSM data in POSTGIS database

I'm a newbie when it comes to mapping application. I had successfully loaded my OpenstreetMap data in a Postgresql/PostGIS database. Now my problem is how to render the vector data (the POI's, ways, ...
8
votes
1answer
446 views

How to change the base map in Ushahidi?

Fascinated by the idea of a 'crowd map' and 'citizen journalism', I've been perusing Ushahidi and it should serve me well. I would like to emulate it except for - the base map. I would prefer a ...
6
votes
5answers
1k views

Effectively displaying a large amount of data on Google Maps APi

I have about 20 layers that I'd like to put on a Google maps API. I assume I'll need some form of a tile cache server and perhaps under mapserver or geoserver. These layers amount to about 400mb so ...
5
votes
2answers
3k views

Why is there a small white space between tiles in Chrome?

I'm using openlayers to display a google base-map layer and it works fine on Firefox/IE/Safari. I'm having problems with Chrome as the tiles have a small white space between them shown in this image. ...
4
votes
4answers
1k views

is my open source web GIS software selection ok?

Which are the best open source tools for building a web gis application having PAN, Zoom, Query/search, Label etc options ?. I have decided to use Postgre sql for database and geoserver as middleware. ...
4
votes
2answers
2k views

ESRI Javascript API: How to hide infoWindow while using measure tool?

In my Javascript API Web application I'm using the infoWindow to query a parcel layer and display display information in a popup when I click the parcel. I've set this functionality to turn on and off ...
4
votes
2answers
218 views

adding large amount of data [arcgis 9.x javascript api]

I've got problem, I'm creating map based application, and now I have to add to map about 100 000 graphic points, from coordinates. I was trying in many ways to do it, but always process of adding ...
2
votes
3answers
2k views

QGIS Web Client in Windows does not load map

I have installed QGIS (1.8 Lisboa) desktop and server on a Windows XP machine. I am now trying to configure the QGIS Webclient. I downloaded the zip file from GitHUb, and made the changes to the ...
1
vote
0answers
332 views

MapFish PDF: Geoserver WMS layers not generated as tree structure

I am using the mapfish printing module in my web map application.In that everything is working fine but layers not generated as tree structure in output PDF file and "ODC_Graphics_Data" wms layer not ...
5
votes
2answers
317 views

What does Scale mean in the reference of Desktop GIS or WebGIS?

I'm having trouble understanding the meaning of the concept of scale when it comes to maps on screen, i.e. either in a Desktop GIS or in a WebMap. When it comes to paper maps, the idea is very clear. ...
4
votes
2answers
765 views

What are the key features of a web map?

In response to comments, I'll rephrase the question: We're building a web based mapping and data querying system. The data are at several different scales, and should be queryable at these scales. ...
2
votes
2answers
4k views

Access-Control-Allow-Origin error in web map

I am having trouble getting a WFS layer working using Geoserver, OpenLayers and GeoExt. I get the following error: XMLHttpRequest cannot load http://10.0.0.155/geoserver/wfs. Origin ...
31
votes
12answers
6k 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 ...
19
votes
6answers
3k views

Creating a small web-mapping/map-tiling service

I am looking for a small-scale and easy way to present one or more polygon shapefiles online (on a municipal website without any existing map-server infrastructure, to be precise). Right now, I'm ...
16
votes
4answers
675 views

Advice on a generic open-source package roadmap

I just wanted to ask an advice from the open source GIS gurus on a recommended stack to use for my envisioned project, as I do not fully understand the limits of the possible with most packages. I ...
8
votes
4answers
826 views

What python web-mapping framework to use?

I am interested in developing a web-mapping application. I am relatively familiar with Python and so i'm looking for a python framework. What are my options? what are the pros and cons of each option? ...
13
votes
5answers
851 views

Comparing two maps with nice web interface?

Is it possible in Leaflet or OpenLayers to compare two maps with a bar to slide between the two? Examples include: ...