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

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138
votes
18answers
59k 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 ...
2
votes
2answers
462 views

Where can I get the location of all Universities and Colleges in North America?

This seems fairly straightforward but I'm having trouble finding the right data. All I need is the name, address, and lat long of all universities and colleges in North America. I've come across a ...
16
votes
4answers
7k views

How to create a simple front-end for a PostGIS database?

My organisation collects a lot of environmental monitoring data (stream flow, water chemistry etc.) most of which is currently stored in Excel. I’d like to get everything into a database – probably ...
2
votes
1answer
72 views

scaling of results: the comparing of osm-files for a few days - a statistical approach

i am pretty new to Geographic-information Systems. i am interested in gathering information on schools Some days before i have heard that it is interesting to have a closer look at the taginfo-site ...
4
votes
3answers
4k 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 ...
0
votes
1answer
143 views

Using custom xyz tiles in CartoDB?

Following this example (see the section "Use the Tiles as a CartoDB Base Map"), I am trying to add a set of xyz tiles to CartoDB, without success. I exported a EPSG:3857 png from ArcGIS, and created ...
-4
votes
1answer
119 views

Putting home location and name in Google Maps? [closed]

I want to put my home address in Google Maps forever. I registered my home location like a shopping mall, Restaurant, bar, hotels, shops store, office etc. Please describe step by step.
1
vote
1answer
87 views

Separating disjoint GPS path segments in Postgres

This involves a lot of code; if it's better suited for StackOverflow, please let me know! I'm working on a project involving trips that are constructed from GPS coordinates. I'm mapping the recorded ...
0
votes
2answers
118 views

ArcGIS Operations Dashboard: The selected webmap does not contain any layers that can be used as data sources

First of all I hope I'm posting this question in the right section. I'm new to ESRI arcgis apps and at the moment I'm trying to learn the operations dashboard. I looked at their tutorial and it is ...
4
votes
3answers
6k views

How to label GeoJSON polygons?

I'm using Leaflet combined with GeoJSON features. Is there a way to label GeoJSON features (in this case - polygons)? It should get labels from feature.properties.name This is my code where I ...
0
votes
1answer
105 views

GeoExt Toolbar Mouse Position

I am new to GeoExt and OpenLayers world. I am currently using OpenLayers 2 and GeoExt 2. I want to add a mouse position on the toolbar. Currently my mouse position is on the lower right corner of the ...
0
votes
1answer
36 views

Census Data Mapper - what tool they used to do it?

The Census Data Mapper is a web mapping application of the Census Bureau used to create instant web maps out of the Census data which are stored in the Census databases. I was wondering what tools ...
1
vote
1answer
420 views

What projection to use with Mapbox base/reference layers?

excuse me if this has been asked before, but I can not find answer after heavy googling. What coordinate system/projection does shapefiles need to be in to be alligned correctly with mapbox reference ...
0
votes
3answers
149 views

Is there any web-gl js libraries for creating 3D bar overlap city map? [closed]

Is there any some web-gl js libraries for creating 3D bar overlap city map? More details: http://ny.curbed.com/archives/2015/01/09/3d_map_shows_where_nyc_housing_is_priciest_cheapest.php ...
2
votes
1answer
49 views

developing a Talking Map

I need to develop a prototype of a web application that speaks : When you click on a city (point) it says the city name (Audio files are ready) I want to use ArcGIS Javascript API. do you have any ...
2
votes
0answers
78 views

DLLs or examples to support writing a shp, shx, dbf file as memory stream for uses on Azure website?

I'm trying to read/write shapefiles for a web service for an azure website and I do not have the luxury of accessing the local file storage (which means that reading/writing from/to disk is out of the ...
1
vote
2answers
262 views

library to create static maps (an image) with custom map features

Do you know if there is a small library (preferably in python or java) around that allows the creation of static map. Something where you can specific the URL of your TMS server, width and height in ...
0
votes
0answers
15 views

The Web mapping using Mapstore Javascript running problem

The source code for Mapstore, workspace has done but while doing for OpenLDAP the following error is coming (How to configure openldap(for installation of geostore) in windows machine?) ...
3
votes
1answer
119 views

Customize search feature

I'm trying to create a map with CartoDB to show the spanish population between...at a municipality level. I can do everything perfectly, but I have just one problem: I would like to know if is ...
0
votes
0answers
33 views

Can't set cache on tilestache

I've successfully installed tilestache on my server and able to load a geojson from it. But when I change the config file to use disk cache, the server return 500 on requesting the tiles. What I add ...
3
votes
1answer
86 views

mapbox - disabling viewing of unrendered white tiles outside of the map

I'm looking to disable being able to move the map in such a way that one can move outside of the map area: I don't want to be able to see the surrounding white areas when the map is dragged. I have ...
1
vote
1answer
34 views

Tile server return empty features

I have successfully installed tilestache. I also has succesfully add a layer using shapefile from here. But when I tried to use my own shapefile, the server always return empty featurecollection. I ...
1
vote
1answer
677 views

Web map viewer for QGIS Server and PostGIS

I have succesfully installed and configured QGIS Server. I tried WMS and WFS via QGIS Desktop and it works perfectly. Now i am looking for a web map viewer to display (only read (WMS viewer i ...
0
votes
0answers
57 views

Proportional (graduated) symbols map using uMap

Good day. How can I make a web-map with proportional (graduated) symbols or the correct heatmap on the base of numeric data from attribute table using uMap? I have some points with data in columns ...
1
vote
1answer
34 views

Web map linked to database that shows one spatial location at a time

I have a simple database with a record for each research project that occured on a national forest. Each project area is associated with a polygon, and there are around 200 polygons that are piled ...
0
votes
2answers
51 views

Creating a Polygon by clicking on a website embedded Google Earth

I have to create a Polygon on Google Earth which is embedded in my website as it is made in the Google Earth application. I managed to create a polygon already but i can only create it with the ...
1
vote
1answer
108 views

Controlling map details shown using Leaflet and MapBox

I am building a map based chart using Leaflet (with MapBox). I would like to know if there is a way to control the level of details displayed on the map when zooming in. For example I do not want to ...
1
vote
1answer
257 views

Pre-load tiles in OpenLayers 3

I need to preload images (.png) / tiles in my own source: new ol.source.XYZ ,which can it run fast to move and zoom in mobile devices. I used ...libs/ol3/3.7.0/ol-debug.js and as urls: urlArray ...
2
votes
3answers
575 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): ...
1
vote
0answers
96 views

Leaflet Markercluster and Timeline in sync

So I have been trying to figure how to use the markercluster and timeline plug in in sync to show a temporal animation of points. As some of the point data overlaps a cluster is needed to be able to ...
0
votes
1answer
119 views

Add REST map service to basemap

I have created a JSON file which includes 30 map service layers and their attributes. This includes the map service url. My function creates a table of contents from the JSON object so that when I ...
0
votes
0answers
18 views

How to get a copy of the raw photo from the Mapillary app (at iOS)

@fastmultiplication asks same question for Android app, "How to get a copy of the raw photo from the Mapillary app" but I want to know same solution of iOS app. I want to access raw photos of ...
1
vote
1answer
84 views

Trouble Installing GriB extension to Geoserver 2.7.1.1

I am trying to add GriB reading capability to my Geoserver distribution (version 2.7.1.1, build date Jun 26, 2015). I am trying to use the plugin archive found at ...
1
vote
1answer
39 views

Which web maps works best for which web service

Im trying to do a project , where i grab data from mySQL database, and display it onto a web map api mashup (showing a chart on the map). I want to develop an example using REST, SOAP and possibly ...
6
votes
3answers
803 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 ...
0
votes
1answer
77 views

CartoDB, a CMS for maps?

I test cartodb with some data and I found it very useful. I found this instructions for installing cartodb locally in github What is CartoDB? and I try to understand if cartodb is a CMS for maps. Is ...
1
vote
1answer
69 views

Clip & save layer using OpenLayers 2

I ma currently developing a web mapping app. How do I make it possible for my app to clip and save area of interests or area I am working on. I can create a vector layer, modify it and delete if I ...
4
votes
2answers
147 views

Batch create Leaflet webmaps in QGIS

During a project on the spider fauna of Greece, we have to face the design of distribution maps of the species. A good tool to work with is the design of Leaflet webmaps to be used on the website ...
6
votes
4answers
964 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 ...
1
vote
0answers
112 views

How to use an ArcGIS Server globe service on the web?

I created an ArcGlobe document containing a 3D multipatch building... ... then published this to ArcGIS Server as a Globe Service. The help page Displaying data from a globe service says: ...
0
votes
0answers
197 views

Leaflet controls: onAdd() -> “ready” event

I've got a custom control for Leaflet (0.7.3) that uses L.DomUtil.create to generate its own HTML in the onAdd() function. Most of its bootstrapping happens in onAdd(), but I need to do some final ...
0
votes
0answers
27 views

Size mapfile chart element by absolute value of column value

I have a mapfile with pie charts of the relative proportions of a variety of parameters pulled from a table. In some cases the values are negative and I would like to make pie charts of these ...
1
vote
0answers
24 views

Web Cartography how to, cartodb - mapbox

I have to prepare an online map like the following http://www.oikoskopio.gr/map/ but I dont know what programm they use. Can I do something like that with cartodb or Mapbox; With this services you can ...
6
votes
7answers
1k 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 ...
0
votes
0answers
24 views

What are key methods for interactivity between web mapping and associated websites

I need to know what the key methods are for linking a slippy web map to the website on which it resides. (This isn't a simple question about displaying a map - it's about the more subtle interactivity ...
0
votes
2answers
560 views

How to transform EPSG:3857 to tile pixel coordinates at zoom factor 0?

I'm creating a Leaflet map with an WebGL overlay (using L.CanvasOverlay) which renders a street network on the GPU. Let's assume I have a point (1497143.62, 6896952.18) in EPSG:3857 and want to ...
2
votes
1answer
48 views

Network Diffusion Map

I am working on an interactive map which I vision to have a similar structure to diffusion networks. I have data to pin point an event and I would like to show those involved with said event, and ...
1
vote
2answers
85 views

Is it possible to export layers scale-based visibility to a webmap?

Is it possible to make or convert a QGIS map into an interactive webpage map? For example, I have layers that appear at certain zoom levels, is there a way to have that interaction on the map for ...
5
votes
6answers
4k 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 ...
0
votes
1answer
503 views

Leaflet MarkerCluster custom info window instead of spiderfy effect

So I have been experimenting with the Leaflet Marker Cluster and was wondering if there is a way to disable the spiderfy animation and change the event when cluster is clicked on? Instead the clicking ...