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

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7
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3answers
9k views

How can I plot GPS coordinates on Google Map

What is the best way to plot GPS coordinates on a Google Map? Are there any tools that can do that (written in python specifically)?
7
votes
1answer
272 views

online map of 242,888 locations: which service to use? (what if temporal heat map?)

I have a 161.8 MB large CSV file with geocoded locations (with latitude and longitude) for 242,888 lines. I want to have an embeddable online map of all this. I wonder which service could deal with ...
7
votes
2answers
11k views

Moving marker smoothly along two GPS coordinates

I am trying to animate a marker from one GPS coordinate to another. I am currently using Google Maps to achieve this and, although my algorithm seems right, Google Maps is doing a poor job at ...
7
votes
1answer
2k 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 ...
7
votes
1answer
1k views

How to create a 4096x4096 png from a 1440x720 data set using GDAL?

I'm having a bear of a time trying to do something that seems fairly straightforward. I'm trying to take a netcdf file from ftp://eclipse.ncdc.noaa.gov/pub/OI-daily-v2/NetCDF/2011/AVHRR-AMSR/ and turn ...
7
votes
1answer
1k views

How to setup GeoWebCache to produce same grid as GoogleMaps?

Is it possible to create gridSet in GeoWebCache which has same number of zoomlevels with scaleDenominators compatible with google maps? There is EPSG:4326 default, but no mention of number of ...
6
votes
4answers
2k 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 ...
6
votes
4answers
2k views

Point in polygon algorithm for multiple polygons

I've a Google map with bunch of polygons on it. Here is a problem I'm interested in: Given a lat,lng point, what's the best way to determine all the polygons that this point lies in? The obvious way ...
6
votes
4answers
2k views

Best solution for printing Google Maps?

What is the best solution so far for printing Google Maps as a base layer of Vector layers in Geoserver/OpenLayers application ? I used to print WMS layers using GeoExt print page example, but when ...
6
votes
5answers
8k 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 ...
6
votes
2answers
273 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
2k views

Leaflet / Google Map baselayer / markers not visible

New to Leaflet, currently trying to migrate a project from native Google Maps to Leaflet; having been drawn to Leaflet by the layer management and options of using better 'roadmap' style basemaps. ...
6
votes
2answers
241 views

Randomly Generate Streeview Point without GIS in country

I'm interested in pulling street view data at random within a country. I can only figure out how to generate a point within a bounding box. Often it pulls data from nearby nations. I'm using a GIS ...
6
votes
2answers
2k 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
6
votes
1answer
439 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
1k 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 ...
6
votes
1answer
639 views

Retrieve speed and number of Lanes in Google Maps API, OSM data or any other stream?

Is it possible to return the posted speed and number of lanes of a highway segment using Google Maps API, OSM data, or any other stream (paid for or free)?
6
votes
1answer
2k views

Draw route direction overlay on Google Maps or OpenLayers

I'd like to display the route direction generated from GraphServer on either Google Map or OpenLayers. The result I want is basically identical to how Google Map shows route directions, by ...
6
votes
3answers
2k views

Connecting markers by following the roads in Google Maps

I have many markers in a kml file. All the markers are on the roads. I wonder if there is a way to process the data and connect the markers by following the road? Of course, the markers should not be ...
6
votes
1answer
1k views

What causes these shiny artifacts in Google Maps imagery?

Do you know what causes artifacts like this one: Source: ...
6
votes
1answer
242 views

Plotting 1M+ intensity reading as custom shapes with Google Maps

I currently have a database (Mongo, atm) holding roughly 1M points of data corresponding lat/lon/intensity values that I'd like to plot over a region using the Google Maps API. Ideally, I'd like to ...
5
votes
3answers
5k views

Where can I download the Google Road network as shapefile?

Is there any site from where I can get Google Road network as shapefile? As per my knowledge It is not distributed by google. So anybody can suggest how can I create this road network for a custom ...
5
votes
3answers
379 views

How to simulate google maps user experience

I’m not familiar so much with GIS applications and libraries. There is something that I would like to know if it’s possible or not. We are using ESRI suite of products as our GIS infrastructure. We ...
5
votes
3answers
2k views

Is it possible to get coordinates for locations from Google Map?

I wonder is it possible to get coordinates (of pins) from Google Map which is integrated in some website?
5
votes
3answers
2k views

Does a national(USA) interstate rest stop/rest area dataset exist?

And I don't care about format--worry about that later! I found some maps in Google maps, usually per state. I also have one map made my someone else, that no longer appears in the Google Maps search ...
5
votes
4answers
5k views

Can you make a travel region polygon with with Google Maps API?

I am working on a local design project and need to determine if someone is local to my area to allow them to participate. Local, as defined by the group, means that the person is within 2 hr driving ...
5
votes
3answers
1k views

GPS coordinates to neighboorhood?

I have tried both Google and Yahoo's Geocoding services to get the Montreal neighborhood/district from GPS coordinates but while they are both able retrieve the correct (address, city, state, country) ...
5
votes
4answers
697 views

Is there a way in the Google Maps API to perform a union?

I'm looking for a way to take the overlap area of multiple polygons and work with that result as a single entity, ideally all in the API.
5
votes
2answers
293 views

KMZ vector file over Google Maps

I have a KMZ vector file which works fine on my Google Earth application, but i want to overlay this on my phone (android) through Google maps. Is that possible??? thank you very much Mike
5
votes
2answers
915 views

How to Georeference 3D model or 3D buildings?

I am working on 3D project so i have to do georeference to 3D buildings which are created by 3D designer.Anyone Knows the solution.Please send me.
5
votes
1answer
3k views

Find bounding box of a Google map

Is it possible to get the bounding coordinates of a google map that a user has zoomed to using Javascript? I see that it can be done using the Google App Engine but I don't know if is possible using ...
5
votes
3answers
1k views

“File not found at…” error when loading KML into Google Maps

I have a KML file on a public URL like http://host.com/dir/file.kml If I put that KML file on another server, and put the new URL in the search box on Google Maps, it loads the KML into google maps. ...
5
votes
2answers
507 views

How to achieve an “inner glow” effect on polygons drawn using the Google Maps v3 javascript API?

Is it possible to produce an "inner glow" effect on polygons drawn using the Google Map v3 javascript API? If not possible using the vanilla Google Maps API, is there a 3rd party tool that can do it? ...
5
votes
1answer
271 views

Is it Better to Use Google Maps or OpenStreetMap When Dealing With Data Points in both Urban and Rural Areas?

My application tracks cancer-related trends across multiple US States. Most of the patient data in the application deals with people who live in poor, rural, or under-served regions. We want to start ...
5
votes
1answer
3k views

Google Map API 3 with OSM overlay

I'm using GeoXml3 to parse XML files in Google Map and would like to add OSM as custom maptype. I fiddled with this example but it hides completely the original Google layers. I've found a couple of ...
5
votes
4answers
1k 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?
5
votes
1answer
566 views

Google maps satellite view Pricing and limitations

This script at openstreetmap shows how one can use google's Satellite view as a layer on top of others. I noticed that to do so, one does not need to supply any API key. Does that mean that there are ...
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 ...
5
votes
1answer
2k views

How to restrict zoom levels in the Google Maps API

Is it possible, in the Google Maps API v3, to restrict the zoom to specific levels (eg 16 and 7)? In my case I wish to show city points at a global scale, then show suburb polygons when zoomed in - ...
5
votes
2answers
597 views

BBOX and Projections of WMS services in Geoserver

we have tried to overlay a raster layer on Google map and have some difficulties to align the raster images onto the base map. When it is on the overview (Zoom level 1), it looks like this: On a ...
5
votes
3answers
1k views

Server side clusterer for Google Maps

After doing a lot of research on different types of clustering coordinates (server side) I am still having problems with choosing the best approach for my project. My requirements: Ability to work ...
5
votes
4answers
4k views

Google maps kml and polygon eventclick error

I have a google map polygon kml file that I am loading on a google map. When I click on the polygon, I draw a line from that polygon to places on the map. To do this I am using the code: //Add KML ...
5
votes
1answer
6k views

Create drive time polygon around a map point

I'd like to create a 30 min drive time polygon around 400 separate points I have plotted to google maps. I have discovered http://www.freemaptools.com/how-far-can-i-travel.htm but this seems to freak ...
5
votes
1answer
370 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 ...
5
votes
1answer
944 views

What is the best map provider solution for repetitive routing use?

[edit] What is the best solution in terms of cost effectiveness, stability & speed for running a lot of routing requests and comparing them. lots of times over and over? I understand now that it ...
5
votes
2answers
338 views

Google Street View with Image Only

Is it possible to open a location in Google Street View and have it show ONLY the Street View image? For example, if I open the following link: ...
5
votes
3answers
801 views

Plot a EPSG:4326 KML File using Google Maps V3

I have a KML file that uses EPSG:4326. Is there any way to plot this onto a Google Map (v3) which uses Mercator? Here is the page I am working on The district data comes from one source and is ...
5
votes
1answer
1k 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 ...
5
votes
2answers
421 views

How to calculate a new bounding box that is 80% of the actual bounding box returned by google map?

I need to show a marker for each user that falls within the visible portion of google map. To do so, I get the bounding box from google map, and send it down to the database and I receive a list of ...
5
votes
1answer
133 views

Looking for open-source solution to show map with massive objects(3x3 polygon) on a web site

I don't have much experiance in GIS systems. I am developing a web site which need to show a map with 3m x 3m rectangles for a radius of about 400 meters.(about 58,000 polygons for one location) I ...