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

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3
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1answer
341 views

How do I find the intersection of two polylines in PostGIS?

I have a set of road conditions reported for small segments of road, and I am hoping to determine the specific subset of each segment which intersect with a route along the road so that I can draw the ...
3
votes
2answers
96 views

Where can I find a map with the location of towns and cities in Southern Sudan?

For a project I have some name of towns and cities in the Southern part of Sudan, the region South Kordofan. Many of these towns I can't find on Google Maps, but I need to know their location. ...
3
votes
1answer
266 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.
3
votes
1answer
245 views

How to place markers on the outline of a circle in google maps?

I have the center of a circle and it's radius and I need to place variable amount of markers on the outline/stroke of the circle. The distance between this markers should kept same, so if I have 8 ...
3
votes
1answer
346 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 ...
3
votes
1answer
151 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 ...
3
votes
4answers
984 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 ...
3
votes
1answer
382 views

What are the requirements for using Google's GEvent?

For a current project, we need to know when a Google map is done loading all of its tiles. I found the following question, which was for the same basic problem: register event "loadend" on ...
3
votes
4answers
5k views

Calculate length and area with Google Maps API v3

Google Maps API v2 had great methods for lines and polygons to calculate length and area. v3 is lacking these methods (maybe just for now?). What other options do I have for calculating line length ...
3
votes
1answer
579 views

How to merge several google map images into one?

I want to have a high resolution aerial photo of a catchment area. I took some images from google maps and georeferenzed these and saved them as a layer file. but how can I merge them now that I have ...
3
votes
1answer
1k views

OpenLayers - Vector Layer and Google Maps - vector layer and google layers don't seem to be in sync when zooming on Chrome

I am working with a Google Layer and a vector layer in OpenLayers. I was wondering if anyone else noticed any problems with Chrome displaying Google Maps layers on OpenLayers? It seems that when I ...
3
votes
1answer
831 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 ...
3
votes
1answer
2k 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 ...
3
votes
1answer
408 views

Where can i find free mapnik map styles with focus on waterways?

I am using Google maps for my map tiles. These tiles are very road oriented. As i am making an application for waterways i would like to change my map so that its main focus is on waterways. I have a ...
3
votes
1answer
272 views

How to map our data with Google Map data

I want to add all the bus route data and create a route finding app for my country since Google map has no data about bus routes in my country but with JavaScript API i could get the shortest path ...
3
votes
1answer
2k views

Georeferencing with Quantum GIS and reprojecting to EPSG:900913

I'm trying to reproject a map to EPSG:900913 The image I'm reprojecting is the following http://i.imgur.com/HmfLW.png I'm using the cities as reference points obtaining the coordinates from Google ...
3
votes
1answer
851 views

Retrieve road segment from Google or Bing Maps

Let me see if I would be able to explain this correctly... Both Bing and Google Map geocoders can return you and a point given an address. Is there any way to retrieve an 'address range' instead i.e. ...
3
votes
1answer
4k 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 ...
3
votes
1answer
30 views

Conversion from Namibian Coordinates to Google Maps (WGS84)

I have coordinates in Namibia, but don't know how to convert them to use them in Google Maps. The system is Lo22/19°. Then Y: +55 435,89 X: -498 157,28 Can anyone help with a conversion?
3
votes
2answers
516 views

GoogleMaps URL string to display unique marker

This is a topic I thought as easy as pie to solve with just a Google search and which is in fact quite complicated. When I use the following URL string to open a GoogleMaps window on a specific ...
3
votes
2answers
243 views

Render data on top of Google Maps

I have an interpolated temperature data samples that covers a map evenly. The data is in the form of (lat,lon,temp). I want to render that data on top of google maps. I tried google heat maps and the ...
3
votes
1answer
551 views

Routing with multiple points

I am using postgreSQL, postGIS and pgrouting. Now I am really confused on how am I going to find the shortest path between multiple points. I know how to find it between two points through dijkstra ...
3
votes
1answer
202 views

dynamically aggregate data based on user input and create KML to be displayed on map

I want to dynamically aggregate data based on user input (basically firing a sql on my database ) and create a dynamic KML file out of that and display it on google map using their java script API . ...
3
votes
2answers
1k views

Can I use Google Maps API and substitute Openstreet map as base layer?

This Question is based on below requirements. 1 - our application will need to use functionalities of Google Maps API like custom marker/Info pop up/Routing etc. 2 - our application wants to use ...
3
votes
1answer
247 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: ...
3
votes
1answer
395 views

making choropleth maps using PostGIS Windows

i read an article on chicago tribune blog about making maps, it consist on "making choropleth maps using PostGIS, TileMill, Mapnik and Google Maps" on Mac environnement, my question is how we can ...
3
votes
1answer
1k views

Pan & Change Zoom to show Fusion Tables Query Results in Google Maps JavaScript API V3

I've created this map -- https://s3.amazonaws.com/pdb.files/lookup_auto2.html -- using Google Fusion Tables and Google Maps API. I'm attempting to modify the code so that the map will pan and zoom ...
3
votes
1answer
1k views

How to cluster 2 datasets in Google Maps API V3?

I'd like to produce a map that shows thousands of Markers. I'm using Markersclusterer to show all these markers. Yesterday, I received another huge data set (completely different) and I'd like to see ...
3
votes
0answers
492 views

How to display ONLY local country names in google maps?

I am using google maps in an application where it is important that country labels display the country name in the local language. If you pass in certain language parameters that google maps ...
3
votes
1answer
161 views

google map api v3 large/complex polygons

I have quite some large/complex polygons I'd like to overlay on a Google map. I can do this but wondered what the best/fastest way is to load them? I have tried using a KML but understand there are ...
3
votes
0answers
112 views

How to determine and send alert SMS for next bus stop in a GPS tracking system?

In my gps tracking system (PHP/MySql) I have got 5 Stops for a vehicle. Whenever the bus reaches stop 1, the passengers at stop 2 should get an SMS alert. And in the same way for the sops followed ...
3
votes
0answers
109 views

How to display Google Fusion Table map search result attributes

I am creating a map with Google Fusion Tables that will allow me to search for a local food product and display on a map the retailer that carries it. Along with showing on the map the location of ...
3
votes
0answers
242 views

R with ggplot2/ggmap - How to load a png image as a map

I am trying to find a workaround for ggmap's missing support of world maps (i.e. you can't create any maps that show latitudes > 80°, due to idiosyncrasies in the mapproj package). To a limited extend ...
3
votes
1answer
381 views

Plotting multiple addresses with distance to specific POI

I'm not sure if this is the correct place for this question but here goes. I am getting ready to move to a different city. Right now I have about 80 houses to choose from. One of my parameters for ...
3
votes
1answer
2k views

How to highlight multiple cities/towns in Google Maps?

I'm trying to create a service area map in Google Maps. When one searches for a city or town, Google outlines the town in a light red. If possible, I'd like to have multiple towns selected in this ...
3
votes
1answer
740 views

Any way to view/create/edit Google My Maps KML files on Android?

I have two large (several hundred features) maps created by Google My Maps that I use for my field research. They contain important information required by the field crew for their work on site. ...
3
votes
2answers
660 views

Rendering geoJson polygons in google maps android apiv2

I'm in the process of publishing spatial data stored in a postgis database to a google maps based android app and am trying to put together a plan for rendering my data in the most efficient manner ...
3
votes
0answers
61 views

Can a google calendar go on a map?

Can a google calendar go on a google map? Is there a GeoRSS that can be consumed? Thanks! -mb
3
votes
0answers
245 views

calculate total Miles in a polygon using Google Map

I have an application that allows the users to create any custom polygon layer on top of google maps, i am interested to know if their is a way to select the road layer in this polygon and then ...
3
votes
2answers
293 views

Can OpenLayers request different language tiles from map providers (eg Bing or Google)?

If I am in the US and my browser locale is en-US, I'll get English language maps by default from Bing. Same thing if I access Bing tiles with OpenLayers. If I change my country/region to (for ...
3
votes
0answers
350 views

How to contour irregular point data for overlay on Google maps?

I am having some serious trouble finding a solution to fit my current needs. I am attempting to create contour maps from irregularly spaced point-data on the fly to overlay on a Google map. I have ...
3
votes
0answers
1k views

Converting projected coordinates to google maps pixels

I have a single polygon in a local projection system. I would like to convert that polygon into an image that can be used as an overlay on google maps. I understand that it may be better to use ...
2
votes
2answers
506 views

Spherical Mercator projection invented by Google and not conformal?

I had some certitudes on the Google Spherical Mercator also known under EPSG code 900913 and 3857 before looking at this presentation, I was sure that this projection was in the Mercator family (so ...
2
votes
3answers
3k 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 ...
2
votes
3answers
284 views

Does Google Maps follow W3C guidelines for accessibility

Hello Does google maps conforms with the w3c accessibility recommendations(A,AA,AAA)? Cheers
2
votes
3answers
4k views

OpenLayers weird problem with GoogleMaps base layer and WMS overlay

I'm trying to overlay a WMS layer over GoogleMaps base one. The WMS layer is defined like this: var catastro_layer = new OpenLayers.Layer.WMS( "WMS Catastro", ...
2
votes
3answers
4k 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 ...
2
votes
2answers
415 views

Google Maps Coordinates Problem

I have been trying to use google street maps with the help of OpenLayers, but Every time I am running into a problem with this google maps coordinates. The Coordinates of a location named 'Asab, in ...
2
votes
2answers
2k views

Offline map(google/openlayers) for HTML5(Angular) based hybrid application

I have a requirement where the customer has explicitly asked for offline support for the map. The rest of the application works well offline, but i am not sure how to get this done using Google or ...
2
votes
2answers
834 views

how to buffer inside a polygon in Javascript

I'd like to know if it's possible to buffer a polygon on the INSIDE only using OpenLayers and other Javascript tools (e.g. jsts). Here's what I found about the topic in general: Buffering INSIDE a ...