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

learn more… | top users | synonyms

12
votes
3answers
6k views

How to georeference a web mercator tile correctly using gdal?

As an example I will take the following tile http://a.tile.openstreetmap.org/3/4/2.png and save it as "4_2.png". The WGS84 coordinates of this tile can be calculated or read there by clicking the ...
12
votes
2answers
241 views

Using web mapping and geocoding to track genealogical data

Over the last year I have gotten involved in researching my family tree. My paternal grandfather came from a remote island in the Atlantic, along with hundreds of others of his generation, and many of ...
3
votes
2answers
1k views

How to 'highlight' a selected country?

All, Over the past several days I've read as much as possible regarding the OpenLayers API (within a JavaScript/jQuery environment), yet I'm still having trouble in getting my head around what I ...
4
votes
3answers
383 views

Is there a web mapping server works on a linux shared hosting account?

Question: Is there a web mapping server software out there that works on a typical linux shared hosting account? Background: I have been trying find a web mapping server that would allow me to serve ...
3
votes
2answers
352 views

Design question: what's the role of WFS-T in this kind of webapp?

I have more experience in "traditional" (Java EE) webapp development, and I am trying to figure out a decent design for a mapping web application. My application has a map, and users can see and edit ...
1
vote
2answers
360 views

Why is my shapefile not visible in Tilemill?

I have 3 layers of vectors (shapefiles) that I've loaded into Tilemill. However, nothing is visible in Tilemill. What am I doing wrong, and what should I do to get my map to show up? This is part ...
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 ...
3
votes
1answer
280 views

Add a mbtiles file to TileMill

is it possible to add a mbtiles file as TileMill layer? Thank you, Andrea
0
votes
1answer
94 views

Draw the interested point on the map and save the point attribute to OpenGIS database

I am looking for a map solution can help me pinpoint the wireless route location on my organization's indoor map. I have an indoor map server on which Geoserver is running. I have found an example ...
4
votes
2answers
239 views

Looking for stand alone map server

New to mapping tech. Requirements: Stand Alone Server for offline use (will be an internal app) - No Mobile. Ability to add custom CSS class and hover information to US counties Programmatically ...
14
votes
4answers
1k views

What is the best open-source web mapping solution for handling 3000+ polygons

I have 3000+ polygons which represent watersheds (18 main watersheds). At the first stage all the 18 watershed will show and their list will be placed in the left sidebar. If any user mouse over the ...
5
votes
2answers
821 views

Django PolygonField: how to display on map?

Extremely beginner question. I have a GeoDjango model with a MultiPolygonField. How do I retrieve the value of this field and display it as a polygon on a map? class county(models.Model): cd = ...
11
votes
2answers
297 views

Looking for ready tools to display real-time positions online

we want to show that in a big city like Palermo, cycling can be the fastest tool (and at the same time the most ecological). We will give 4 smartphones to 4 users, and there will be 4 ways to move: ...
2
votes
1answer
292 views

WMS WMTS TMS Server Stress Tool

Someone knows about a tool that test the cpu usage, memory, IO Read/Write with MapProxy or a WMS, WMTS, TMS Server? Like a 'Web Stress tool' that test Server with concurrent clients request and ...
2
votes
1answer
2k views

How to change icons for Leaflet markers when using cluster plugin?

I'm using Leaflet MarkerCluster. I created a MarkerClusterGroup as markers1 as you can see. There's about a hundred points I have written like var addressPoints in this format: var addressPoints = ...
3
votes
1answer
152 views

How to build a website or mobile app with a routing capability?

I want to build a website/mobile app for my school that shows the direction between two points similar to Google's directions API, but not with Google maps. I've got map shapefiles and GPS ...
0
votes
1answer
436 views

How to layer statistics from Excel onto a map?

Would another free app or program be better and easier to do this than mapbox.com ? I simply want to layer census 2010 data by shading areas onto a map like on theatlanticcities.com/posts/map/ & ...
3
votes
3answers
433 views

What is Geonode ? What all can be achieved using it?

Ok i have searched the site and did not find enough information concerning regarding what is a Geonode so i really thought i may ask everyone who has used it to give their opinion. I am trying to set ...
0
votes
3answers
6k views

How to publish my map on the web? [closed]

I want to publish my map is created in QGIS 1.7.4 version on to the web.Can u pls suggest me how to publish the map with proper documentaion and screen shots if possible?
4
votes
1answer
857 views

What is the difference between Leaflet and Mapbox?

What is the difference between Leaflet and Mapbox, and how are they used together? Like the API and what exactly are they and is Mapbox using Leaflet?
1
vote
1answer
235 views

Does Leaflet always work in decimal degrees?

I'm looking into Leaflet and I'm surprised that it doesn't (seem to) specify coordinates in Web Mercator like other popular APIs, but instead uses decimal degrees. Are all coordinates in Leaflet ...
2
votes
2answers
59 views

How can a browser argument be used to position a web-map

How can I enable the unique location and zoom level of a user on a web-map to be shared? For example, if a user zooms to lat: 75, lon: 35, zoom: 8, I would like to be able for the user to share that ...
1
vote
1answer
402 views

Creating a GeoExt Action from OpenLayers Function

I am trying to create a GeoExt function out of this OpenLayers function, which displays the getFeatureInfo. I was able to create this GeoExt.Action() but it does not give me any output. Any idea ...
11
votes
2answers
1k 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 ...
7
votes
4answers
753 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 ...
0
votes
2answers
296 views

Can I use Google maps tiles in OSM for Iran?

I use Google maps in my application but because this service has limitation (2500 request per day for Geocoding) I want to use OSM instead of Google maps. But OSM doesn't cover Iran as well as Google ...
3
votes
1answer
310 views

What open-source web mapping solution I need to use for this situation?

I will try to explain what I need to do. I have about thirty KML polygons. I need to put them on some satellite map. On the top of these layers (KMLs, satellite) there must go layer with roads. I ...
1
vote
2answers
240 views

What are some good examples of geospatial UI's

I am interested in understanding and applying practical geo-spatial examples for some of the transportation data that I have. I have several geocodes that I will pull from the database, and display in ...
0
votes
1answer
417 views

Calling a custom tool from Python script

I have a script based gp tool published on web (via Flex App). The script goes to many different mxds to write a report. Then I created another model to do some geoprocessing in a different toolbox ...
1
vote
2answers
482 views

Problem with panning and zooming in OpenLayers

I'm interested in detecting when a user moves or pans a map so that I can run a new query on a database based on their location. However, the following code causes the panning and zooming controls to ...
7
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 ...
1
vote
2answers
507 views

How to add custom widget into Mapguide Maestro 4.0.1?

I am developing a Web-Mapping application using Mapguide Maestro 4.0.1, in that I need to add a custom widget. Any suggestions for, How and Where to add the custom tools in the Mapguide Maestro. Is ...
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 ...
12
votes
4answers
529 views

How to create spatial tag clouds or “tag maps”?

I'm looking for implementations of spatial tag clouds or "tag maps". Some papers I found talk about a Yahoo Tag Maps API, but I couldn't find any such thing. I'd prefer OpenLayers-based solutions, ...
6
votes
3answers
1k views

30,000 data points… can this be reasonably served using openlayers?

I'm trying to tackle a web GIS problem and need to figure out the best strategy. I have a map with 30,000 cells on it forming a grid for the province of Alberta. I have a list of data points for ...
1
vote
1answer
189 views

Web mapping with Openlayers

On a pedestrian wayfinding scenario, I need to drape some extruded buildings close to the road as the user navigates along the road on a 2D Map Background. I hope I can use OpenLayers and ReadyMap for ...
8
votes
4answers
1k views

GeoWebCache: misalignment of tiles

I'm trying to test simple web map based on PostGIS/Geoserver/OpenLayers stack on Windows Server 2008. When I load my WMS layer by: var gwctest = new OpenLayers.Layer.WMS( "gwctest", ...
10
votes
4answers
3k views

Looking for a Table of Contents sample for the ArcGIS Server JavaScript API

Where can I find an example of a Table of Contents control to plug into the ArcGIS Server JavaScript API 2.3? Ideally it should support feature/dynamic/tiled layers; show symbology; and allow grouped ...
1
vote
1answer
1k views

PHP MapScript API Development for MapServer

PHP MapScript Tutorial I'd like to use the PHP MapScript API and am curious how others have successfully used it to produce a site that serves up remote sensing data. I've got land surface ...
0
votes
2answers
127 views

Web site with: google map like or GIS, one million record database and a feature to run advanced search

What is the GPL way - without or with little developing - to build a web site runnning on apache which has to feature: one million record database (MySQL; which may be editable), an advanced search ...
7
votes
2answers
470 views

Usage of GeoDjango

We are creating a website that displays geographic data on map (currently using Google Maps js API). We are currently using postgres + postGIS + php. It has been recommended that I look into usage ...
5
votes
6answers
434 views

Is anyone using JSONP in Web mapping applications to get around the browser same origin policy?

Javascript based Web mapping apps that use ajax requests to get data from a server are limited by the Same Origin Policy to only request the data from a server in the same domain (subdomain and port). ...
2
votes
0answers
41 views

new administrator - Advice to choise a best web sharing GIS DATA with authorization information level

i'm a new "GIS 's needer" and i have just Pleasantly surprised to find your community ( thanks google!!!! ) I need for my office's project a appication who permit web sharing(only reading)some gps ...
1
vote
0answers
87 views

Heat map which will be auto-updated from Google Docs

I want to develop a heat map (standardized choropleth map) which will be auto-updated with data pulled from GoogleDocs. Which tools are the most helpful for developing that kind of map? Thank you.
9
votes
2answers
289 views

Options for a historic Web Map?

EDIT: I'm an intern at a small local history museum. We have a budget of $0. Project overview: I've got a bunch of old paper maps. When I say old, I mean 1800s and up. They've been scanned into ...
2
votes
3answers
457 views

Communication Between Browser and QGIS Server/QGIS API

Suppose I have QGIS server up and running with some vector data. Now a user accesses this data from a webpage. Would it be possible in some ways for the user to send a request to the QGIS Server and ...
1
vote
0answers
111 views

How to compute a map-to-screen transformation?

Every projection calculation I have come across dealing with the Lambert Conic projection converts the given Lat & Long to meters. So now the magical question: how on earth do you take the meters ...
3
votes
2answers
147 views

Selecting a suitable GIS for my project

I need to develop a web-based map using existing shape files. Using the web-map, we must be able to select a region and produce contours for that selected region. Can any one suggest the best open ...
5
votes
2answers
690 views

How to generate heightmap for UK

I already have a method to generate greyscale bitmap heightmaps from Google Earth using a long and involved manual process (see here). Is there a scriptable way of producing a heightmap to a set ...
1
vote
0answers
288 views

Error installing/uninstalling GeoMedia WebMap Professional_6 on Windows 7 (64 bit)

On installing GeoMedia WebMap Professional_06.01.03.08 on Windows 7 Professional 64 bit. Following Error window pop up at the end of installation process or If I uninstall it. I have .Net Framework ...