Google Maps is a web mapping service application and technology provided by Google free (for non-commercial use),

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12
votes
4answers
9k views

Geocode address once in google maps, save in database, read geocoded result from there on

Is it possible to geocode an address, save the result in a database, then read that result from there on? I'm using a Google map that is geocoding hundreds of addresses which obviously hit the ...
1
vote
1answer
3k views

GeoExt (ExtJS + OpenLayers) not displaying Google Map

I've just started exploring GeoExt. It displays all the map controls, Google Logo and "Terms of Use". But the map is not rendered. I'm using firebug, and no JavaScript errors are generated. I'm using ...
2
votes
0answers
819 views

How to draw an overlay using KML on our own app in Android?

Repost from here Hi there, I want to draw an overlay using .kml files, just look like this. But on my own app in MapActivity. 31.kml, display district in Jakarta, Indonesia or the example that I get ...
3
votes
3answers
787 views

How to pull lat/lng from a map canvas and update a database

So if i want to pull out lat/lngs after user clicks on a map canvas (lat/lngs are pulled using any javascript API (leaflet, wax etc.) and add this to a postgresql database using a query, how do i do ...
1
vote
0answers
160 views

How to call a PNG file with MapServer and a Google base layer? [closed]

How can I call a png file from map path including a Google map as base layer? I'm working with MapServer and I have some shapes made with Quantum GIS and ArcView. I can call those shapes in a url and ...
3
votes
1answer
987 views

Why does my WMS layer overlap the Google Maps v3 logo?

I'm using Google Maps v3 as a base layer and on top of that I create an overlay pointing to my WMS (streets and avenues). A few months ago all works fine, my WMS layer was not overlapping the Google ...
4
votes
1answer
329 views

Google Earth/Maps aerials via arc2earth producing cuts in PDF output

I just purchased a month of arc2earth. They provide Google imagery backgrounds with great resolution and display fine in ArcMap but after exporting to PDF they have these triangular cuts as seen here: ...
1
vote
1answer
2k views

adding kml to google maps

I am trying to overlay the KML file over google maps and want to know where I can host the kml file which I will then be able to add to the google maps. I tried using google drive and dropbox but they ...
2
votes
1answer
222 views

Simple GIS to Provide Urban Boundaries

I have an app built on top of Google Maps right now and everything works great. I want to add one feature that seems exceedingly difficult. On my site, I want users to be able to type "Boston, MA" or ...
4
votes
3answers
10k views

Solving the Point in Polygon Problem Using Google Maps and Fusion Tables

The Point-In-Polygon problem is fairly well documented on this forum. My question is if there is a way to use Google's free tools, i.e. Google Maps, Fusion Tables, and possibly Google Refine, to solve ...
1
vote
0answers
333 views

Detecting If A Coordinate Is Near Polygon Edges In Google Maps API

Is there a way to add a test to see if a Lat/Long coordinate is near the edge of a polygon? I am building very complicated polygons that have rivers and roads as borders. Because of this, it is very ...
1
vote
2answers
1k views

Turning addresses into GPS coordinates into delivery route?

I have a list of locations (prospects I need to meet) I have to drive to, and I'd like to use either Google Maps or Open Street View to build an optimized route. Are there tools that can take a CSV ...
4
votes
1answer
967 views

Google Maps: obtaining the border of an area

When using the geocode API it is easy to obtain the (centre of the) coordinates of the address. For example: Rotterdam. If you look up the same location in Google Maps you also get the surface area of ...
1
vote
0answers
144 views

Acceptable Reduce() amounts for google maps zoom levels?

I'm using SQL Server Spatial to return large polygons to Google Maps for display. Given that google maps has a zoom scale of 1 - 20, I would like to reduce my polygons (reduce function uses the ...
5
votes
2answers
2k views

Layer misalignment with UK Ordnance Survey data and OpenLayers

I am in the UK and my QGIS projects are based on UK Ordnance Survey mapping data and are set up in EPSG:27700. Whenever I have tried dropping an OpenLayers layer (Google Satellite/Bing Maps Aerial) in ...
1
vote
1answer
10k views

Computing Shortest Distance using Google Map v3 and Openlayers

How to compute shortest route between two points in google map that user selects and provide all routes from source to destination in Transport system?
5
votes
1answer
625 views

GIS-based reporting and maintenance tool

Background Conceptually, I am looking for a tool, or suite of software tools that can be readily integrated to help browse data using a GIS-based map (such as Google Maps). The proposed architecture ...
3
votes
1answer
160 views

Can I customize a Google Maps layer in terms of content?

I don't want all features that come with the Google street layer. I just want basic infrastructure like roads, national parks, cities, streets with their names, etc. Everything that is public is OK. I ...
24
votes
7answers
2k views

OpenStreetMap or Google Map Maker: where should I donate and volunteer my geographical knowledge?

I definitely know a lot about the places I visit and want to share it with everyone. I want to know if donating and volunteering at OpenStreetMap—which is where I have been helping—is a waste of time: ...
1
vote
1answer
770 views

How to color markers based on polygon area?

I have a map with around 317 markers and each marker is the center point of a polygon. The polygonal area varies throughout, so I want to represent the markers in such a way that the polygon with the ...
3
votes
2answers
808 views

Client Zoom in OpenLayers with Google layer

I'm displaying some features on a map, but the features are somewhat on the small side and can't be easily viewed at default zoom levels. Using the Client Zoom example, I was able to enable acceptable ...
1
vote
1answer
5k views

Google Maps MarkerClusterer - Remove all clusters

So, I have a PostGreSQL DB with 317 datapoints - all spatially enabled through PostGIS. I have queried this using PHP as GeoJSON and overlaid it on Google Maps (using a converting routine). I have ...
1
vote
2answers
1k views

Set up the center of a map with Google Layer as basemap in OpenLayers and GeoExt?

I looked on similar questions but in vain. The map is working fine but has a center of (0,0) as returned in the Firebug console not (-8, 32) that I want. I did the projection transformation.. Here is ...
1
vote
1answer
381 views

How do I make a more Bandwidth-friendly map overlay?

I performed a map overlay in Google Earth then saved the overlay as a KMZ file. Then logged into my Google Maps account and uploaded that KMZ file so the map overlay would appear on Google Maps. The ...
4
votes
2answers
2k views

From pdf to google maps overlay

First post, so be gentle. Context - I'm doing some research into healthcare provision and I'd like to visualise the data. I'd like to be able to put these PCT boundaries as an overlay to google ...
1
vote
2answers
9k views

How to convert from UTM Zone 36N Mercator to WGS 84 degrees of lat and long?

I have acquired many coordinates from a points I extracted from polygons. The points are in WGS 84 UTM Zone 36N, and I want to use them on Google Maps. I found out that they use different systems (I ...
2
votes
1answer
1k views

Set ZIndex for Google Fusion Tables in Google Maps API

Is there any way to set the ZIndex of a Google Fusion Table layer in the Google Maps API? I have several Fusion layers added as overlays to a map with the ability to turn them on and off. I want ...
1
vote
1answer
2k views

Data from google maps or bing maps available for offline use? Whole cities, I mean

I was developing some graph-based search algorithms and it would be interesting to use them against some real data. I used openstreetmap against them (downloaded some city-wide OML files from some ...
2
votes
1answer
11k views

Moving Marker in a Google Map on Android

I am trying to create something similar to http://dev.syskall.com/map/ in my android phone application. Basically I have a List of GeoPoints and I need to make the car/marker move on the map ...
1
vote
0answers
488 views

How do I use Proj4js or other technique to make custom map projections with google.maps.Projection?

I'm using Google's Projection class to try to convert my map projection from the default spherical mercator to something like Lambert Conformal Conic. I was previously adapting the code from this ...
7
votes
1answer
4k views

Output polygon data from postGIS and read it on Google Maps API

So, I have a group of polygons stored in PostGIS. I'm trying to build a web application with Google Base maps (using Google Maps API). Now, How do i output the polygons in the right format so that ...
2
votes
0answers
655 views

Tile mode in Map server

I am trying to overlay the layers that are rendered using map server over google maps.I am pretty much new to this whole thing. So I tried to go through this example here here ...
2
votes
0answers
464 views

Using way-points to create pathway - MATLAB [closed]

I'm currently working on a map routing system and am not sure if anyone has done this before. I have collected various way-point coordinates on the map using Google map. How can I create a pathway ...
1
vote
1answer
187 views

Mobile location determination

I was wondering how Google Maps on my Android phone can locate me with a good accuracy when my GPS is disabled. At first I though it was with the cell tower but I'm not sure it can achieve this ...
4
votes
1answer
340 views

geodjango slowness and debugging

I'm using geodjango + postgres to display polygons from tigerline on a map. Pretty simple stuff so far. My issue is that when I use the GPolygon object: django.contrib.gis.maps.google.GPolygon there ...
1
vote
0answers
256 views

Google Maps API for iPhone and Android application

I need to develop map with Google Maps API with markers etc. That map would need to be integrated into iPhone and Android application. That integration will be done by another person. My question is: ...
1
vote
1answer
2k views

KML with text AND polygon

I'm working on applying some KML files to a google map on a mobile device, and have really been impressed with how easy everything is (so long as you stay inside the norm). I have run into some ...
3
votes
2answers
1k views

Image tiling math

I've been looking at MapTiler for the logic on how to render an image as tiles on a (google) map. Instead of storing the single tiles locally in a folder structure I want to use Djatoka. I'm able to ...
1
vote
1answer
703 views

I wanting to reproject the vertices of my polygon. I have been able to achieve this for the bounds but having a bit of trouble with the vertices

I wanting to reproject the vertices of my polygon. I have been able to achieve this for the bounds but having a bit of trouble with the vertices. function onFeatureModified(event) { ...
4
votes
2answers
5k views

How to display a PostGIS table on Google maps?

I am attempting to take a shape file and display it on a map: I can do something like this: SELECT ST_AsText((ST_Dump(the_geom)).geom) as the_geom FROM shapes; But the problem is I still have to ...
1
vote
1answer
1k views

Display Labels in Google Maps from Spreadsheet Mapper

How would I go about displaying labels on placemarks on the map canvas where the source kml comes from the Spreadsheet Mapper? This particular use case is where we want to share and control the ...
1
vote
1answer
2k views

Overlay the big map image with Google Maps API

I put the image on my website with overlay option in Google Maps API. But the map image which is overlayed is too big: 2.85 MB. I can't resize it, so I wonder is there an option to put it somewhere on ...
11
votes
10answers
26k views

How to Geocode 300,000 addresses on the fly?

I have a database which has 300,000 address, which are to be shown on map. I know if I geo-code all the address it will be too expensive for me. So I was wondering if it is possible to geo-code the ...
2
votes
2answers
5k views

Retrieving Google Map data into Matlab to plot points

First of all, I hope this question isn't too basic, obvious or inappropriate for this forum. I'm very new to using map data. I'm working on a project on more accurate map routing using Matlab. My ...
2
votes
2answers
1k views

Finding the Nearest Landmass to A Point In The Ocean via API

I'm building an iPhone app that often ends up in a point that is in the middle of the ocean. I want to be able to find the nearest landmasses, which in some casses are thousands of miles away. So far ...
3
votes
1answer
3k views

Zooming Google Maps to fit the extents of a Fusion Table layer

How can I zoom a Google Maps control to fit the contents of a Fusion Table layer? The layer only contains pushpin / marker point data. One method is to perform a REST query on the Fusion Table and to ...
1
vote
1answer
2k views

google maps API v.2 to v.3 conversion

I want to go from http://www.zolnai.ca/WMS/whereintheworldV2.htm to http://www.zolnai.ca/WMS/whereintheworldV3.htm I went through Gmaps API documentation on code.google.com And added the changes that ...
1
vote
1answer
231 views

Delimitate an area - google map

I tried to find tools to delimitates a specific region area of a map When the mouse is on a specific area, there is the region delimition which appears. Like this website : ...
3
votes
4answers
2k views

Separation of Land - Body waters

Let me start by saying that I am not a GIS expert nor a cartographer , and my knowledge of GIS is limited to the quasi-null professional training I had as an architect. My question here was ...
1
vote
1answer
914 views

Googlemaps Layer on Openscales

I'm using openscales in a web mapping project, i would like to add a Google maps layer, i know that there's some licence problems , but i don't care for these licence issues, i'm looking to add ...