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

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3
votes
1answer
820 views

Can I use SELECTION mode on FeatureLayer from ArcGIS.com Webmap in ESRI JS API

I am using an ArcGIS.com Webmap in an ESRI Javascript API application I am developing. One of the layers in my Webmap is rather large and cannot be rendered all at once when zoomed out, however I ...
1
vote
1answer
169 views

Display mouse position from graph on a map

i need to develop a web application which shows a map, that displays a GPS Route. So far I can do this using Openlayers or ArcGIS Server. Now I want to add an interactive graph below the map. In this ...
13
votes
7answers
1k 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: ...
8
votes
5answers
3k views

What is the best free web GIS browser?

Hi 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 ...
7
votes
1answer
2k views

Possible ways to display maps offline, inside mobile hybrid app

I want to develop a mobile hybrid application to run on both Android & iPhone devices in which i want to display my own map data. I have the SHP files with the data i need. I have Geoserver and ...
3
votes
0answers
459 views

Error in uploading data in QGIS cloud

I want to publish my .shp file using QGIS Cloud plugin. I signed in to qgiscloud.com (free). On create new database it will auto create dbname='fbeudp_mfaphk' user='fbeudp_mfaphk' ...
0
votes
1answer
2k views

Why won't this mapbox map load into a DIV container?

All, For the life of me I can't figure out why I can't load a map into a CSS template I'm trying to customize. I've placed a fiddle here: http://jsfiddle.net/mapbaker/Du7zq/10/ Basically I'm ...
2
votes
0answers
107 views

spatial queries by webgis and virtualizing

i have a question regarding this tutorial: http://www.gistutor.com/postgresqlpostgis/10-intermediate-postgresqlpostgis-tutorials/75-understanding-postgis-spatial-queries.html As u see, it ...
2
votes
2answers
2k views

how to use mapproxy to serve WMS from reprojected google maps tiles

how to use mapproxy to serve WMS from reprojected google maps tiles, i have searched for docs, but there's no docs which describe how to add google maps as source.
2
votes
1answer
326 views

Problems with inspect element in browsers

I use google chromes inspect element for debugging. I have a map displayed on my page with 1 base layer (osm) and 2 overlays (wards, points) and a highlighter control. The map displays and works ...
10
votes
1answer
780 views

Steps for creating an online webmap with editable features using ArcGIS Server/SDE and SQL Server?

EDIT/UPDATE: I'm adding a bounty to this in hopes of obtaining a step-by-step guide to creating an online map with feature editing using the ArcGIS Flex API, SQL Server Express and ArcGIS Server 10.1. ...
7
votes
1answer
831 views

Could someone suggest a good GeoExt Tutorial?

In my research I've found these two, which are only explaining the basics. Developing OGC Compliant Web Applications with GeoExt GeoExt Workshop (Pdf) And of course the native (but short) ...
1
vote
1answer
827 views

What is the best way to use Leaflet and Geoserver to highligh a feature after a WMS request?

I have a web map, and I'm hoping to make it interactive. The layer I have is reasonably large, at 15 mb in GeoJSON format 4 mb compressed, so I don't want to load the whole layer as one file. But, I ...
30
votes
5answers
12k 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 ...
3
votes
1answer
3k views

ESRI Javascript API Export to Shapefile and CSV

I am working on a Javascript Web Application using the ESRI Javascript API v3.3. My application allows the user to edit and query data and also provides a table for attributes. I would like the user ...
2
votes
2answers
598 views

Why isn't map service displaying in ArcCatalog or rest services?

Update: I have an issue where my map services, which pull ortho-imagery from a cache, intermittently do not display in my services directory, ArcCatalog or my web portal. Currently I go into ...
4
votes
2answers
1k views

How Can I make UTFGrid files?

I have been looking at the UTFGrid specification and the usage of UTFGrid in Openlayers. How do I create the required UTFGrid files for my data in PostGIS?
0
votes
1answer
3k views

ESRI Javascript API: setting feature layer selection symbol

This seems like it should be a relatively simple thing to do, but for whatever reason I can't figure it out. I'm trying to add functionality to select a group of parcels as laid out in this example, ...
5
votes
2answers
233 views

Simplest way to make web maps with lots of shapes

I have some computed data about US Census blocks. I'd like to make a web map to display that data. I've searched around and found various tools, but I can't tell what is the simplest "lazy man's ...
3
votes
0answers
169 views

How to create a webmap showing point density?

I am trying to develop hotspot map showing point density in our gis based web application. After searching for an option I have decided to use v.kernel command. I have a table containing some point ...
3
votes
1answer
291 views

ESRI Javascript Web Application Hosted on Amazon Web Services

I have just deployed my first web application to Amazon S3. This web application is a simple web mapping app using the ESRI Javascript API and consuming a web map from ArcGIS Online. I have been ...
4
votes
2answers
3k views

Hiding infoWindow of ArcGIS API for JavaScript 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 ...
-1
votes
2answers
2k views

Adding the draw control in Leaflet

I'm trying to add the Draw Control availble in with the Leaflet.Draw Plugin I've downloaded the code and stored in htdocs and point my page towards the js and css libraries needed. The page loads ok ...
2
votes
2answers
523 views

Options for displaying 3D data using ESRI web APIs [duplicate]

I've been looking through the documentation of the various ESRI web APIs to see if there is any support for displaying 3D data, but haven't found anything useful. Is there any support for this - or do ...
9
votes
2answers
4k views

Difference between a WMTS and a WMS?

What is the main difference between a Web Map Tile Service (WMTS) and a Web Map Service (WMS) When should you choose one over the other? What are the (dis)advantages by choosing one ...
11
votes
5answers
7k views

Libraries to render vector-based maps in the browser

Is there a open source JavaScript library like leaflet or openlayer which can be used in a web or mobile application and loads vector-based maps instead of images? I only need the road information and ...
2
votes
1answer
6k views

How to geocode addresses from MySQL and add them like markers to the Google map?

I'm using Google Maps API and Google Geocoding for geocoding addresses. I have table named 'users' and column named 'location' in MySQL database. Column 'location' contains addresses. I need to ...
0
votes
0answers
154 views

How to create a collaborative mapping website?

I have read about webservers, static and dynamic pages, cgi-bin... I can create a simple web mapping service in which a map with layers and controls will be there. And now I want to provide login ...
2
votes
2answers
647 views

Do the recent developments in the Google Maps API replace necessity of OpenLayers?

I think the main drawback of the Google Maps API is that we can't add our own vector data or raster imagery as one of the layers in the map. Is this correct? Or is there any alternative in the Google ...
1
vote
1answer
109 views

How to Add Network Analyst dll in My Web Mapping Application adf?

I'm a beginner in ArcGIS & I'm shooting blind really. I want to add the Network Analyst tool box to find the shortest path in my project. I tried this solution: I can't add Network Analyst dll ...
1
vote
1answer
1k views

How to create shortest route and multiple routes service using openlayers?

I created a digital database of many important features and locations of my city. and I want to create a web application in which shortest distance between two locations can be calculated and ...
1
vote
1answer
94 views

When we type an address in search bar, in some web mapping applications like google maps, a list of words automatically displayed from the database.

What is actually happening behind the code and how should be the code? when we search for a specifc word, will it look in the database (here it is postGIS) and lists the similar words.
1
vote
1answer
1k views

How to add images in CartoDB infowindows

Can't seem to get the default site to display images. I've added hrefs to a image column. example; I've dragged the image column to the top of the infowindow sidebar app and it still just displays ...
1
vote
0answers
58 views

PgRouting: Connect route to table

I would like to show the edges of the result route in a table, like this: http://routing.geosdi.org/ I did the pgrouting part, just have to make the table and connect it. How can I achieve this?
2
votes
0answers
842 views

Projecting point in Leaflet from EPSG 900913 (same as 3857) to EPSG 2232 with proj4js returning unexpected results

I have a leaflet map from which I want to be able to query an api that accepts x y values in EPSG 2232 as inputs. Leaflet doesn't handle point transformations like Open Layers does so I am trying to ...
0
votes
0answers
86 views

Generating a Web based map interface from ArcGIS export file

I have an XML export file from an ArcGIS geodatabase with the following fields: OBJECT ID (-) Shape (-) Grid_Area_ha_1 (ha) Shape_Length_1 (m) Shape_Area_1 (m2) Residue_Yield_t_a_Restrict_NEW (t/a) ...
4
votes
2answers
536 views

Dynamically generated map overlay with map server - what's the best option?

I'm facing a problem and would like to ask your help finding the best online mapping solution! Project details: The User can pick 1 from several hundred territory based functions to map its values. ...
0
votes
0answers
37 views

Is it possible to manually add lines(routes) on a map?

i was wondering if it was possible to manually plot routes on a self generated map. currently i'm following the switch2osm.org tutorial on how to build my own tile server. i've also found pgrouting ...
49
votes
3answers
32k 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 ...
6
votes
1answer
2k 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 ...
3
votes
2answers
278 views

What are the requirements for building a Web Mapping and analysis Site?

I want to make a site like bhuvan in which it can provide different layers of information and also tools for performing GIS analysis I know three main requirements : client side scripting ...
5
votes
1answer
2k views

Does Leaflet has option for scale dependent layers?

Is it possible to show layers with Leaflet depending on scaling? For example not show counties until zoom level reaches 10. Thanks.
4
votes
1answer
293 views

Interactive maps for a survey - Are there any tools yet?

i am working on a draft for an online-based survey. I would like to enable the participants of the survey to draw polygons, lines and points (several) on a basemap (e.g. google maps) and (extra ...
1
vote
2answers
753 views

Testing software (like QTP ,Selenium) for ESRI platform (Desktop and Web based)

Does anybody know any testing software/tools for ArcGIS platform (version 10.1). Specifically : Customized ArcGIS Desktop application & Web application. I researched on Google but am not able to ...
1
vote
2answers
624 views

How to use Leaflet marker clustering with image map only?

I have image map of one state, where I would like to put about 100 markers. Is it possible to use only one image map instead of CloudMade tiles Leaflet usually uses? So, I need only that image to be ...
0
votes
2answers
531 views

How to draw a linear map programmatically?

I'm new to GIS programming and I'm using OpenLayers for my GIS project. I want to know how to draw a linear map programmatically between two locations from a real geographical map (may be OpenLayers). ...
3
votes
1answer
600 views

How to set up a background map in WGS84 projection for interactive map?

I've started developing my own interactive map and I have some things which are not clear to me. I heard that OSM, Google maps and all similar maps use Google Mercator projection. But if I use that ...
0
votes
0answers
925 views

PostGIS data visualization

I have dump my data in PostGIS from shapefile successfully. I made a postgres connection through PHP and that also returning the data of other field. But the main problem is GEOM field visualization. ...
3
votes
1answer
192 views

How to set up a maximal zoom for polygons in Leaflet?

How to set up a maximal zoom for some layer, for example state polygons? I need that my US polygons which represent states have maxZoom 6, and when zoomed higher than 6, that US counties show up ...
2
votes
0answers
946 views

Problem with multipolygon in Leaflet

I'm using Leaflet L.Polygon, but for some reason there's only blank site. Here's my code: var map = L.map('map').setView([37.8, -96], 4); var cloudmade = ...