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

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11
votes
10answers
27k 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 ...
10
votes
1answer
11k 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. ...
16
votes
3answers
2k views

What is the wire format for Google's new vector map tiles?

Google recently released new vector cartography for their mobile maps. I'm curious if anyone here has any insight into the wire format they use for transmission? I've experimented with a few formats ...
7
votes
2answers
59k views

How do you get the coordinates from a click or drag event in the Google Maps API V3?

I have made a Google Version 3 Geocoder , I want to be able to pick up the coordinates of the marker when it is dragged or clicked. Below is my code: <!DOCTYPE html> <html> <head> ...
9
votes
4answers
2k views

How to Geocode a City

First, a little disclaimer. I know that I can just call one of any number of geocoding APIs to perform this for me. This is more of a curiosity than anything else. With that aside, how does someone ...
6
votes
4answers
5k views

How to scrape data from a google map (in flash)?

I've contacted the author of this NYC homicide map from the NY Times several times to see if he could send me a spreadsheet of information the data is based off of, but I have not had any response ...
4
votes
3answers
10k views

Which CRS to use for Google Maps?

I am trying to map a Shapefile (download) onto a Google Map using the Javascript API. The Shapefile describes the boundaries of NYC School Districts. The file's projection was Lambert Conformal ...
9
votes
3answers
5k views

What is a “mashup”?

GIS users mix spatial data layers from an early age of GI science. What is new in the concept of "mashup"? Is it something really new, or only a trendy word?
8
votes
3answers
2k views

Seeking GPS device for vehicle tracking?

I am a programmer with no connection to Geographic information, except that I work on application which uses Google Maps. I need some device, which I will be able to set in a vehicle in order to keep ...
8
votes
2answers
2k views

How to obfuscate data when using Google Maps?

I've been working on a google map (v3 of the api) that is plotting 120 markers or so (or will do shortly) - see http://www.mediwales.com/mapping. If you view the source the map data is for all the ...
8
votes
4answers
2k views

Performance of google map tile creation processes

I know that question is rather vague but please bear w/me. I'm trying to get an idea of what sort of product performance - specifically timing - people have seen for various methodologies they have ...
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 ...
13
votes
6answers
3k views

Satellite Imagery Providers

I'm building a web application - my requirements are: Must have global satellite imagery. Must have easy to use API's that are capable of geoJSON data imports, mouse and keyboard gestures, etc. To ...
13
votes
8answers
8k views

What methods are there to produce map tiles for google maps?

newbie to stack exchange here. I'm currently using the automatic tile cutter found here to make the standard 256x256 tiles required to make a custom map type for my map. The map tile cutter script ...
8
votes
1answer
8k views

Calculate lat lon bounds for individual tile generated from gdal2tiles

I have multiple tile sources generated using gdal2tiles I'd like to present on the same map. So when presenting a tile I need to determine which source to serve it up from, checking against the ...
6
votes
4answers
2k views

What is a best practice way to display/feed US census/tiger data into Google Maps API?

Let's say I want to display age, income, etc based on census block groups on Google maps. What is the best practice or recommended way to do so and also to allow to do simple queries?
6
votes
2answers
4k views

Generate a kml file from Google results

Is it possible to generate a kml file of searched items in Google Maps. For example: Search for highschools in Virginia Return the results as a kml file with the schoolname address and location
15
votes
2answers
6k views

Is it possible to gray out a Google Maps map except for some area?

What i am looking for is a way to emphasize a certain area on a Google Maps map by graying out the rest of the world. I heard about some solution of using 2 polygons of which 1 is visible and the ...
8
votes
1answer
5k views

Using Drop Markers and MarkerClusterer together?

I want to create a rather visually appealing representation of time-series data (Costco Store Locations w/ opening dates). My idea was to plot them on a map, in time-series, but it seems that the ...
6
votes
3answers
3k views

How to toggle Fusion Tables layer on/off based on map scale?

In the Google Maps API v3 I'm displaying points derived from a Fusion Table by specifying a FusionTablesLayer Is it possible to set a minimum/maximum scale on this layer, so it turns off when zooming ...
4
votes
2answers
6k views

Create Fantasy Map

I'm currently looking to create a Fantasy map and share it with my friends. We have the map designed already in flash to certain degrees of detail and able to export as a vector. We'd like it to be ...
4
votes
1answer
346 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 ...
4
votes
2answers
1k views

Determine tile identity of tile set displayed on Google Maps/OpenStreetMap

I'm not sure if this is best way of approaching this, so I will explain where I'm coming from first. I want to load data onto my webpage containing a map based off a lat/long point. The only way I ...
3
votes
2answers
386 views

Using ArcPy to zoom to Y,X (string) coordinate pair copy/pasted from Google Maps?

I frequently use google maps to find locations, and paste the coordinates into the "go to XY" toolbar in decimal degrees. It's a bit repetitive to paste the latitude into one box, and the longitude ...
3
votes
4answers
651 views

Where to host private CartoDB/Leaflet web app

I am looking for suggestions/recommendations on where to host my cartodb/leaflet map site. It needs to be private with authorized users and have a document management system. So, I was thinking ...
3
votes
1answer
3k views

Attempting to use ST_DWithin to locate objects within a given distance of meters using SRID 4326

I'm a Rails developer with minimal GIS experience, working with PostGIS and the RGeo gem. I'd like to find all of the cows within 500 meters of my current location. So, I'll create a model for my ...
2
votes
2answers
2k views

How to use Google Maps geocoding with Openlayers?

I'm making a Openlayers map with some shapefile and I have Google Maps base layer. I want to create a text area and a button. When I input a address and click the button, the map should show me the ...
0
votes
1answer
2k views

How to adjust the difference between the coordinate from OpenStreetMap and Google Maps

I have downloaded the OSM from OpenStreeMap that came with all nodes from the map and their respective coordinates. Now I have to plot a node (latitude and longitude) on Google Maps, but all ...
13
votes
2answers
3k views

How can I fix my complex Polygons so they show correctly in Google Maps?

Problem: I'm trying to find a way to fix some broken polygon shapes and I'm not sure how I can do this. Details: I've got a number of polygons which I basically imported from TIGERLINES a while ...
6
votes
1answer
963 views

Looking for Alternatives to Google gmaps utility widget for ArcGIS JSAPI API

I have been using https://code.google.com/p/gmaps-utility-gis/ as a solution to displaying Google imagery as a base layer on a ESRI JSAPI map. With the advent of JSAPI 3.4 and full AMD support this ...
6
votes
1answer
2k views

Add a OpenStreetMaps road data layer on Google Maps API v3

I've successfully embedded a Google Maps API v3 map on my site, and added OpenStreetMaps (OSM) as the base layer. Is it possible to use Google's tiles as the base layer, and then overlay street data ...
5
votes
1answer
2k views

Coordinates of upper left corner in the world file?

According to Wikipedia and ESRI last two lines in the world file represent x and y coordinates of center of upper left pixel. Now, if I have a world file like this: 32.0 0.0 0.0 -32.0 691200.0 ...
4
votes
2answers
15k views

Select more than one place at a time in Google Earth?

I've got a Google Earth .kmz file opened in my copy of Google Earth 6.0.1.2032 running on Mac OS X 10.6.7. There are about 5000 points/"places" in the file and they show up fine. What I would like to ...
2
votes
1answer
11k views

How do I determine if a road is privately owned or not? (USA)

I'm working on a project where it matters greatly whether or not a piece of land is on a private road. Google Maps in many cases takes private roads (for example in master-planned subdivisions) and ...
2
votes
1answer
592 views

Application for online overlay images on Google Maps

I want to develop javascript app which will take any image user uploads, user will click on 3-4 points on the image (3-4 cities, for example NY, Chicago, LA and Miami) and image will be overlayed on ...
2
votes
4answers
5k views

Cache tiles for offline use of Google/Bing aerial maps

I am currently working on a project where QGIS is used for creating and editing vector data and requires a Google or Bing aerial photo layer as a basemap. I can add Google satellite/Bing aerial ...
2
votes
1answer
1k views

How to unproject coordinates on a Google map with Openlayers?

Below is my code and a pic. When I finish making my circle on a Google map with Openlayers, I get the following coordinates but I want coordinates like E.G: bottom: -27.762124575762 left: ...
2
votes
3answers
6k views

Interpolate points between coordinates for smooth animation in google maps or openmap

I have an application where we want to create an animated route based on recorded points. I have an example that use the google maps driving directions, however, we already have points and they are ...
1
vote
1answer
329 views

How do I convert ESRI X,Y to Lat, Long for Google Maps?

I've downloaded the data from NYC Parking regulation. I want to plot that on Google Maps. I use http://www.shpescape.com/ft/ to convert to Google Fusion Maps but the data is in X,Y coordinates instead ...
1
vote
1answer
730 views

how to get the boundaries of a city in KML from google maps

im trying to write a google maps application. and i wanted to only highlight one city in the world ( im using the masking method explained: https://github.com/vasile/geomask) but now im bugged with ...
1
vote
1answer
917 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 ...
9
votes
0answers
182 views

Using ArcGIS Desktop to create outline (isochrone) around points? [duplicate]

I am trying to generate my own iso-chrones using Google and Python and have reached a point where I can produce two data-sets which I would like to combine in the following way: Points (reachable ...
5
votes
1answer
163 views

Determining if two polygons are overlapping in Google Maps?

I'm working with google maps and polygons, but I have to validate that polygons are not overlapping each other. I have a function that returns TRUE when a point (lat, lng) is inside a polygon, but ...
5
votes
1answer
472 views

Can I use QGIS plugins in PyQGIS as a stand alone script without iface?

Can I use a qgis plugin especially (openlayers plugin) in stand alone pyqgis script? I don't find examples, just code using iface but that cannot used in stand alone script.
4
votes
2answers
562 views

Where to find free map icons sets? [duplicate]

Which is the best source of free map icons (royalty free & price free)? I need an icon set for my Google Maps project that will give it a custom feel. Ideally I want an icon set with a creative ...
4
votes
1answer
3k views

Overlaying WMS from Mapserver in OpenLayers with epsg:900913 from Google/Bing/OpenStreetMap

ADDED: Another curious effect is that no matter to what scale I zoom on the baselayer google/bing map, the WMS overlay is always the same-sized shot of MN. That is, as the baselayer map is scaled up ...
4
votes
2answers
50k views

Why can't I “turn on” a map view in Google Earth?

Why can't I toggle between map view and satellite imagery in Google Earth as I can in Google Maps? Is there an easy way to add Map View to Google Earth?
4
votes
1answer
4k views

Google Maps API: Is there a way to do proximity analysis to POI

Using Google Maps API can I do proximity analysis, for example: In a state, let's say Virginia, display all the points that are 500 ft/m from a POI such as McDonalds or Bob's Diner, 1,000 ft/m from ...
3
votes
4answers
4k views

QGIS OpenLayers 3 Google Maps not zooming

Google Satellite will not zoom. Although the scale changes as I zoom, as the map is re-rendered, it zooms out to its maximum extent every time. This first happened in the latter part of November ...
3
votes
1answer
235 views

Generating polygons with streets as borders using QGIS?

I have searched online for almost a week and can not find an answer to my issue. I need to generate polygons from street borders in a given city. I have downloaded data from openstreetmaps and ...