Questions tagged [web-mapping]

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

Filter by
Sorted by
Tagged with
8
votes
3answers
2k 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 ...
8
votes
2answers
695 views

How to become a GIS Mobile Developer?

I am mid level GIS Analyst\GPS Coordinator who would like to become a GIS mobile developer at some point. At my workplace we work in the ESRI Platform,ArcGIS Server etc Being a GIS Analyst without any ...
8
votes
1answer
3k views

Sharing a Folium Interactive Map w/ Embedded Markers

I have been experimenting with a few Python packages that have great potential for my dissertation research. Since I use pandas for pretty much everything, geopandas was a natural choice for working ...
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 ...
7
votes
5answers
11k views

Seeking free web GIS browser?

I have created several projects for several different clients. Each project has OS maps, shapefile layers from Government Bodies, Shapefile layers created, AutoCAD dxf loaded in (in various manners). ...
7
votes
3answers
333 views

What tools do you recommend for this kind of web map?

I have one tourist map (ski resort) with buildings and roads in .jpg format. It's problem because north is down and south is up (it is that kind of drawn map with drawn mountain up on map where is ...
7
votes
4answers
6k 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. ...
7
votes
4answers
287 views

Case studies of Participatory Spatial Planning

I am wondering if you know any well implemented geoportals for Participatory Spatial Planning. I am looking for the one related to environmental protection or connected somehow with the topic (but of ...
7
votes
1answer
7k views

How are Esri's ArcGIS,Google Maps, Mapbox different in their products in providing support maps for Web/App developers? [closed]

I am trying to understand their business models. I am not a techie - Angle guy. So kindly explain in layman terms.How is Mapbox innovating?
7
votes
1answer
1k views

Do Tile Servers typically store every tile for every zoom level?

As I understand, a basic tile server provides raster image tiles for different zoom levels. To cover the world, it requires 1 tile at zoom level 0, 4 at zoom level 1, 4n for zoom level n. These are ...
7
votes
6answers
9k views

Automatically download and merge webmap tiles into one big image?

Is there an easy way to download a bunch of web map tiles (in /z/x/y.png format) and stitch them together into a single large image? I could probably script this using ImageMagick, but would prefer ...
7
votes
7answers
8k 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 looking ...
7
votes
3answers
4k views

Application Templates for ArcGIS Server?

Esri provide a lot of excellent template applications for us in conjunction with web maps. These templates are specifically designed for using with your resources on ArcGIS Online as opposed to ...
7
votes
3answers
5k views

Developing Web Application For Map [duplicate]

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. ...
7
votes
2answers
3k 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 = ...
7
votes
7answers
2k views

Examples of thematic mapping web services built with FOSS GIS

What are some current examples of web services serving thematic mapping based on free and open source software? The thematic mapping could be in the form of choropleth or point layers. It would be ...
7
votes
3answers
4k views

How to use Python for online GIS? [closed]

I consider myself a GIS expert, and I have successfully completed many GIS projects for clients. I am proficient in spatial analysis, ArcGIS, QGIS, and quite good in Python as well. However, I am only ...
7
votes
2answers
447 views

Memory considerations for cloud based GeoStack

Some time ago I asked about hardware considerations of cloud based GeoStack implementation. As a follow up to this question There are some good pointers in related question already, but they mainly ...
7
votes
2answers
302 views

What are “M” point locations on the NOAA forcecast cone map?

I don't think I've ever noticed M before. H and S are Hurricane and Tropical Storm.
7
votes
5answers
462 views

What technique is used to acquire client location?

So far I know how to grab the client location to a application or web application by using the users geolocation or GPS location. I remember the possibility of finding the users approximate location ...
7
votes
2answers
607 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 ...
7
votes
1answer
2k views

How to get elevation profile from .tif dsm on the web map?

I have my dsm .tiff file, pixels are floating point 32bit values giving the terrain elevation in metres. I need to create a web map where user can draw a path and get elevation profile for that path. ...
7
votes
1answer
1k views

Is dynamically generating Choropleth maps a solved problem?

I am trying to work out what mapping tools I would need to use to dynamically create Choropleth maps from our data. I am working on a project where the back-end is a big database of statistics, and ...
7
votes
3answers
437 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 ...
7
votes
2answers
5k views

How do I get that polygon from Javascript ArcGIS API?

I would like to have a user draw a Polygon (or Line) onto a web map with the Javascript ArcGIS API drawing tools. For the life of me I can't figure out how to pull that polygon from the client and get ...
7
votes
1answer
415 views

Looking for collaborative webmapping projects [duplicate]

I´m looking for open source collaborative web mapping projects which allow vector editing, wms display and other features like comments, photo-uploads etc. I´ve only found Ushahidi and Sahana so far, ...
7
votes
2answers
4k views

Leaflet change color dynamically

I am new with leaflet and I need help to change the color of a polygon on a choropleth map dynamically. In my website I have an slider, and depending on the position of the handle, the colors of the ...
7
votes
0answers
329 views

Seeking beginner web mapping advice? [duplicate]

I'd like to get some expert opinions on how to get started in web mapping. First, a bit about my skills, then what I'd like to do. I've got many years of experience with GIS, mapping, and cartography....
6
votes
6answers
4k 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 ...
6
votes
7answers
2k views

How to put zipcodes data onto a web map?

This is to create a cellphone coverage map. I'm being given a list of zipcodes and need to create a detailed static cellphone map (plus, ideally, an interactive zoomable map) of cellphone coverage ...
6
votes
5answers
6k views

How do I display geojson polygons on a map?

Here's a very basic question for you all. I've got 17,000 polygons in a GeoDjango database. How do I create a slippy web map that can display these polygons? In other words, do I: load a GMap, ...
6
votes
3answers
3k views

Accessing NOAA web service with token

I recently requested a NOAA "token" to access their data. However, I keep receiving a "Token parameter is required" 404 error. Here is the URL I am using (note token is not the real one): http://www....
6
votes
3answers
7k views

gdal2tiles.py generates wrong tiles / MapTiler the right ones

I'm trying to generate tiles with gdal2tiles.py and the resulting tiles are stored as 18/132639/164219. If I do the same thing with MapTiler (the GUI variant of gdal2tiles) the tile result is 18/...
6
votes
2answers
239 views

How to decide what type of GIS to use for my study project?

I'm a student and currently taking a self directed project course. In our assignment, we were given a bunch of shapefiles and the goal is to make a tool, which would display all the data based on ...
6
votes
5answers
4k 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 ...
6
votes
1answer
4k views

Examples and materials about creating real time web gis application? [closed]

Nowadays all I see when I explore more about web gis applications are some examples of interactive maps which are actually not so 'dynamic' as they are called. It's usually just simple interactive map ...
6
votes
2answers
291 views

Why do some maps show Sandy Island?

I need to ask you guys after reading this article. Any speculations on why some maps showed it? What can be the cause of inaccuracies in (web)Maps?
6
votes
2answers
980 views

Reduce Tracking Data Set

I'm building an application that uses data from GPS units on board vehicles and displays it on a map. A lat/long is recorded every .5 seconds and a session can be many hours... this can add up to be a ...
6
votes
4answers
694 views

Most timely source of California Fire Map data?

Fire season always has me scouring the web for satellite fire map information. Unfortunately many of the locations I find are outdated or not maintained well. What would be the best site to go to for ...
6
votes
1answer
3k 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 ...
6
votes
2answers
3k 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 ...
6
votes
2answers
3k views

OpenLayers tooltips

Please point me to examples of combining OpenLayers and any external tooltip libraries like this. I try to use native OpenLayers tools for building tooltips here, but they not flexible and ...
6
votes
3answers
494 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, ...
6
votes
4answers
283 views

How to serve web maps with user-specific datasets from ArcGIS Server

I am a new ArcGIS Server user and am trying to understand how our web mapping application specification would fit into the ArcGIS Server map services architecture. Our application should support ...
6
votes
2answers
1k views

Setting up an online map site [duplicate]

Possible Duplicate: Steps to Start Web Mapping I have taken on setting up a database which stores information of an annual country-wide survey of alien aquatic weeds, linked to a GIS program to ...
6
votes
1answer
4k views

Using local mbtiles in openlayers?

--The problem-- I've successfully added mbtiles from Mapbox free online source to OpenLayers, but cannot figure out how to get the mbtiles I've created/stored locally to show up in OpenLayers. --The ...
6
votes
2answers
1k views

Can OSM's iD editor be used on custom maps?

I'm setting up a community-based mapping solution for a local NGO. They need their own maps and, after some consideration, I have decided to go with Mapperz suggestion and use MapBox. It's good to ...
6
votes
1answer
1k views

Data visualization and maintenance tool

Background Looking to leverage an existing GIS system for exploring organizational data. Architecture The following figure represents a high-level overview of the system's desired features: The ...
6
votes
4answers
980 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 ...
6
votes
1answer
149 views

Appropriate False return statement?

I wanted the following Code to show green icons when the value is < 6.0 and nothing shown when it is >= 6.0 But it is returning Red icons for values >= 6.0 as in screenshot attached. What should be ...