"Web mapping is the process of designing, implementing, generating and delivering maps on the World Wide Web ..."
0
votes
2answers
259 views
ArcIMS - Active layer update
I'm trying to change the active layer in ArcIMS from the default top position to index 2 in the TOC. The TOC has 3 grouped layers, but it is the first grouped layer that I want the active layer to be ...
4
votes
1answer
884 views
Definition of a BBOX in Web GIS
In my practice I use a lot WMS and WFS in Geoserver. I have not found a document describing the concept of a bounding box(bbox). ArcGIS has map extent properties to identify map boundary. Google ...
5
votes
2answers
2k views
How to apply custom OSM map style in OpenLayers?
I have a small web mapping application based on PostGIS/GeoServer/OpenLayers.
I'm overlaying few WMS layers served by GeoServer and using OpenStreetMap as a background.
In OpenLayers OSM is simply ...
7
votes
3answers
286 views
How to handle display of nested polygons (census, county/state, etc) for a given map extent
My question is how best to decide which layer (from a set of nested, aggregated census polygons) to display for any given map extent in an online map.
Australia's census boundaries are built from ...
5
votes
2answers
237 views
Accessibility Mapping
The realm of cartography depicts many facets of the physical space within both urban and non urban settings. Specifically within the urban setting lies the challenge of navigating spaces such as ...
3
votes
3answers
3k views
How to print high resolution poster sized maps from online map (arcgis server)?
I want to create a PDF document that can be printed at large poster size containing user created data and base map data. Based on a rough calculation, if the poster was 24 inches by 34 inches and I ...
17
votes
6answers
2k 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 ...
5
votes
1answer
268 views
How can polymaps grab polygons from a database?
From my understanding polymaps uses po.features() or po.geoJson to display polygons on a map.
The former you embed your polygons in the javascript.
The latter, you embed your polygons in a .json ...
8
votes
1answer
364 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 ...
2
votes
2answers
537 views
A lot of pointers to load on map-A better solution
I have to project a lot of points present in my Database say more than 100000. I heard that using geoserver is a better solution as it can render any number of points and from ...
12
votes
10answers
617 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 ...
15
votes
4answers
3k 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 ...
6
votes
4answers
809 views
Consideration for a Good Silverlight based mapping application
I am starting to work on a Silverlight 4 based web mapping project using latest ArcGIS Server API. The application will involve multiple map services (for many themes) with selection, queries, and ...
5
votes
2answers
391 views
Disk space and numbers of tiles for world layer
I'm thinking about testing tiles generation of a world layer for webmapping.
In this context, I want to know how I can calculate the number of tiles (256x256 for tilecache if I remember) I will need ...
6
votes
7answers
999 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 ...
36
votes
12answers
3k views
How to Start Web Mapping?
I know I want to start working on a web map at work. We'll be mapping some of our statistics by city.
I have an idea, but I'm not exactly sure where to start. Are there any definitive resources ...
87
votes
14answers
23k views
Comparison of JavaScript mapping libraries?
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 ...
5
votes
2answers
531 views
Choosing web/mobile mapping API
We are building a spatial application targeted to laypeople which will involve viewing and editing vector geodata (currently just points, but linestrings and polygons in the future) with a raster ...
2
votes
1answer
376 views
Military Symbols in Flex Viewer 2
Assalam o Alaikum
I want to create Military Symbols in Flex Viewer 2. How I can accomplish it, including all the names and their code in an XML file and calling it within flex viewer is a pain. Is ...
2
votes
2answers
173 views
Project geometry features upside down
I have shapefiles containing polygons and lines that are used in a mapfile for projecting them through Mapserver. Is there a way in changing the projection of the layers by 180 degrees(i.e. upside ...
3
votes
2answers
1k views
Using WFS Layer as a baselayer
I've looked around the net and I've looked for examples, but I just can't seem to find a way to make a WFS layer be the baselayer. I set up the projection the right way and I set isBaseLayer: true . ...
2
votes
1answer
2k views
Google Maps API v3 vs v2 (JavaScript): overlay problems
I have been using the Gmap API (v2) for dynamically displaying some data:
oMap.map = new GMap2(document.getElementById("map"));
oMap.geoXml = new ...
10
votes
3answers
2k views
Stack - Mapnik, TileMill, OpenLayers, GeoExt
Would this work as a stack for serving webmaps with the basic GIS viewer functionality (pan, zoom, layer switching, info popups)?
Apache Web Server
Mapnik to serve the geo-data (TileMill to Style ...
14
votes
9answers
336 views
GIS - Beyond Earth
I wanted to open a discussion on GIS beyond Earth. Here are some questions so far.
Would the term GIS be changed to something else since the term "geo" means of Earth (e.g. Lunar Information ...
6
votes
2answers
387 views
How to set up WebMap
I'd like to set up a webmap that clients can drop into their existing website.
I'm thinking Geoserver, OpenLayers & GeoExt.
It would be very simple slippy map kind of thing. Do I need Geoserver at ...
3
votes
3answers
982 views
How to avoid “No Data” from Tiled Map Service in Silverlight
I'm using the latest and greatest Silverlight with ArcGIS Server 10 and when I do a search for features in my operational layers (wells) and zoom into them I'm seeing "Map Data Not Yet Available" ...
0
votes
1answer
762 views
Openlayers toggle Marker controls and update information in external form fields
I am setting a form (for multiple addresses) where users can click on map by creating a marker for each address they want to input. Users can only create one marker per address and once the marker has ...
3
votes
4answers
408 views
ESRI Javascript API: Return to the Map Extent you were at when you use browser back button
Can anyone give me some pointers (code would be helpful) on how to go back to the extent a user was at after they have navigate away and clicked the back button?
So I'm viewing a map at X extent I ...
19
votes
8answers
890 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 ...
5
votes
3answers
355 views
Organizing PostGIS data of a large database for fast dynamic user searching
I have a large amount of GIS data, roughly 30 layers, each with 50,000 to 100,000 (Geo)records. Some of this data is GPS collected points, others are POI, some is government provided data (roads, ...
3
votes
2answers
2k views
Moving from MapInfo to web mapping
I use MapInfo and have a lot of data in .tab format that I would like to put into a database in order to access it through a website. I would like to continue using MapInfo as my GIS programme and ...
9
votes
1answer
5k views
How to apply custom Google map style in OpenLayers?
Recently I stumbled upon interesting article showing potential of adding custom styles to Google Maps. Some examples of styled maps can be seen here and you can design your own from scratch here.
...
14
votes
2answers
624 views
How to detect roads from satellite images?
OpenStreetMap has announced a Bing API to detect roads. I want to know what is the theory behind road detection and if there is any open source tool that do that.
2
votes
1answer
415 views
Drawing a polygon with a hole in it using Mapstraction
I am using Mapstraction to make a web-based mapping system. The documentation has some serious holes in it. I would like to use Mapstraction to draw polygons with holes in them. Serious holes.
Can ...
4
votes
1answer
584 views
Advice on benchmarking my Tile Server (Apache2+mod_wsgi)
I'm wondering what advice people have for benchmarking a tile server?
Specifically, I'm running a TMS using TileLite, and Vector Tiles using TileStache. Both are running under Ubuntu Server 10.10 / ...
8
votes
5answers
1k views
How do I serve data in a sqlite database on a shared web host, like GoDaddy, onto a GIS web map?
I am new to the web mapping arena. I currently am managing a website and would like to add a mapping portion to it, mostly for some simple viewing and querying of a small number of layers.
For ...
2
votes
1answer
343 views
How to Georeference 2.5D or Birds Eye View models or Buildings?
I am working on 2.5D mapping.So I don't know how to georeference Birds Eye Viewor 2.5D view buildings.If you did not understand then open http://www.youcity.com there you will find 2.5D buildings.If ...
5
votes
2answers
690 views
How to Georeference 3D model or 3D buildings?
I am working on 3D project so i have to do georeference to 3D buildings which are created by 3D designer.Anyone Knows the solution.Please send me.
6
votes
6answers
2k views
Web-map with mouse-over effect
under photoshop, I have different layers, each representing a region and a background which the country.
I would like to make an animated map for the web, that is when the mousse is over a region, it ...
16
votes
6answers
812 views
What's the most promising application (use) of OpenStreetMap data?
In some areas OSM data is very complete and has a level of detail not seen in closed data sources. Another distinguishing factor is that it contains the knowledge of the people who live in that areas. ...
1
vote
1answer
952 views
How to overlay country map on google world map in openlayers?
Hi I am creating one map.So i want to overlay country map on google world map.I am trying with OpenLayers.Layer.wfs() function.but i am not getting perfect solution.If anybody knows the solution ...
3
votes
1answer
427 views
postgres command to save the line coordinates in openlayers
I am working on project that we create one map ant editing toolbar. Then by using that editing tool bar we can draw point, line, polygon on the map. Next we are converting the line, point, polygon ...
5
votes
4answers
203 views
common task in mapping applications
Two friends and I are developing a series of web mapping applications, only with some basic tasks (measure tools, identify polygons, and others). We are looking for suggestions on what to implement to ...
18
votes
4answers
752 views
Professionally, how did you make the jump 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 ...
3
votes
2answers
331 views
mapserver displays raster image in mirror
I've installed Mapserver and used a map file to set a raster layer and vector(shp) layers on top of it. However, although displayed in the expected order, the png file is displayed in mirror(compared ...
3
votes
2answers
478 views
Ordnance Survey data on GeoServer 2.x
Has anyone had any success deploying the Ordnance Survey's free datasets on its open sourced OSGBWebMapTools framework using GeoServer 2.0.2?
I've been able to set up the datasets on GeoServer 1.7.6 ...
2
votes
1answer
306 views
Generating “theme gradient” legend graphics from MapGuide Open Source
In MapGuide Open Source, I've defined 10 layers, along with a theme for each. As I understand it, a theme represents how different data values are represented. For each theme, I picked two colors and ...
5
votes
2answers
801 views
PHP MGRS Conversion Formula/Library
Currently, the formula I'm using to convert MGRS to Lat/Long and vice versa is giving me slightly different results than most other conversion utilities. It's usually between 10 to 30 feet off. This ...
7
votes
6answers
510 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 ...
1
vote
2answers
662 views
How do I set up the ArcGIS Viewer for Flex?
I am still a newbie at the Flex Viewer; I have been using the Out of the Box Web Application for Server 10.0. I tried to put a simple service as an additional basemap (I also tried it as an additional ...
