Google Maps is a web mapping service application and technology provided by Google free (for non-commercial use),
14
votes
2answers
754 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 ...
1
vote
1answer
35 views
kml divide map into regions
in google map,
how to show Douglas county MAP in regions manner. (east, west, north, south).
These regions should cover with border and show the picker when click the balloon.
Here is my KML ...
1
vote
1answer
25 views
Trying to display some data in OpenLayers - it's not erroring, just not loading :(
I'm trying to display some KML data on a map, using OpenLayers.
Nothing complex - but it's just not rendering.
Here's my javascript code
var map;
function init(element, kml) {
map = new ...
4
votes
1answer
202 views
Generate tiles for google maps overlays
I am trying to show some information on Google Maps which would be in the form of translucent circle overlays. The problem is that some circles overlap, which results in increased opacity and blending ...
0
votes
3answers
138 views
How do I stop the map at just one world/globe?
I am working on a project to put google maps layer and adding our data layers on top of it. using openlayers and google maps layer with out layer of top of it
now the google layer has max resolution ...
0
votes
0answers
11 views
what is the alternative of setZoomLevel in vector based map
It is commonly used to generat map tiles at a certain scale and re-organize them for web map on pc. For example googlem map, and bing map.
Then user will use the setZoomLevel(int level) or something ...
-5
votes
0answers
41 views
Google Map Disappear [closed]
I am doing research and currently was using your software. But i have facing some situation, urgently need help
i have my google street map and data pump in. Everything was fine where i manage to see ...
0
votes
1answer
115 views
Not showing multiple markers on OpenLayers
I want to show multiple markers on my Google map with OpenLayers.
Below is my code :
for (var pointcount = 0; pointcount < jsonObj.length; pointcount++) {
if (jsonObj[pointcount].Long != null ...
4
votes
1answer
51 views
Changing projection in KML from Google Earth to Maps
I have created a bunch of map tiles for Google Maps mistakenly using the Google Earth projection. Is there a tool available to batch warp the KML files to the correct projection or will I need to ...
2
votes
3answers
133 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 ...
1
vote
1answer
814 views
Order of KML Layers in Google Maps API V3
I'm working on a website that when finished will allow the user to turn on and off a number of different KML layers using checkboxes, the layers are parsed through geoXML3 and I want to know how to ...
0
votes
1answer
112 views
WMS-C Google Maps v2 Android
I'm have added a map from a WMS-server in Google Maps v2 for Android using the code provided from this site: http://www.azavea.com/blogs/labs/2013/01/wms-on-android/ . The tiles are downloaded and ...
2
votes
1answer
119 views
What is the best API to use GeoTools or uDig (for the context of my application)?
I am trying to develop a java application that displays : Google maps, Openstreetmap and Bing Map Data.
So which is the best SDK to use in this contet Geotools or uDig ?
0
votes
0answers
29 views
Updating position for a list of markers
I am working with Google Maps. Specifically, I am working with http://hpneo.github.io/gmaps for a gps tracker simulation, here I need to update the position on each point.
At the gmaps script, ...
4
votes
1answer
121 views
Simplest Way to Create a Custom Choropleth Map for a Website?
I am working on a choropleth map for a real estate site. My current workflow is:
Edit and save SHP file's DBF in Libre Office Calc.
Load SHP file into Quantum GIS. Set colored breakpoints based on ...
1
vote
1answer
171 views
Unable to put data into infowindow
I've followed this tutorial to create a custom Google Map. I've included a few other elements such as linking it up to Wordpress and clustering the markers.
It's all working great apart from the info ...
2
votes
1answer
85 views
Understanding the difference between coordinates projection in OSM and Google Maps
I'm looking at the coordinate differences between Google Maps and OSM. I'm a noob in the technicality behind GIS.
Having read:
EPSG 3857 or 4326 for GoogleMaps, OpenStreetMap and Leaflet
How to ...
0
votes
0answers
32 views
cut tiles with gdal2tiles.py from a png with world coordinate info
I have a collection of PNG files that use the standard google maps projection and have baked into the filename of each the zoom level (all of them are at 22), the x and y pixel coordinates of the ...
2
votes
1answer
957 views
sharpmap overlay mapinfo on bing/google
I want to use sharpmap to overlay a mapinfo tab file onto google or bing.
I have it working pretty much at the moment however the co-ordinates that bing/google show are in correct so my mapinfo file ...
1
vote
0answers
68 views
Google Maps v3 with Openlayers - First Zoom Level
I use Google Maps v3 in my application and I noticed a strange behavior, When I refresh the web page, the map zoomed out to display the whole map then get back to the zoom level I specify in my code. ...
2
votes
0answers
45 views
Can Google Geocode returning addresses nearby
I am using google geocoding to bring me addresses according to what a user type on the search box in my iOS app. I would like to know if it is possible, lets say when the user types m google api ...
1
vote
1answer
62 views
Tell Google Maps to hide left panel?
I found that just using the "ll" and "z" parameters are enough to zoom in on an area, but I didn't find how/if Google can be told to hide the left panel ("Get Directions", "My Places", etc.) so that ...
1
vote
3answers
109 views
How to use WKT in Google Map V3?
We have a shape with the following WKT. The problem with google map we normally extract out each of the lat and long value and put into an array and finally will do something like this. It works fine ...
-2
votes
1answer
86 views
Adding Google map layer in Openlayers - what about this function?
How to add Google map as a layer (something like "var gmap = new OpenLayers.Layer.Google("Google Streets", {visibility: false})"?) to this mymap.js function i already have:
var map = new ...
7
votes
1answer
699 views
Why does one part of GML -> KML conversion not work on Google Maps?
Brand new to all of this, not even sure this is the right forum to ask in...
I have a client who wants to visualise cancer incidence and mortality rates by local/unitary authority across Great ...
0
votes
1answer
93 views
help to code a spatial query that returns the results from a database
I have asked this question on stack overflow, what i need help with is to retrieve the database entries that fit within a polygon, drawn with the Google maps api. The map is showing the correct ...
3
votes
1answer
66 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 ...
1
vote
1answer
46 views
Digitized vectors don't match while zooming [duplicate]
I'm trying to digitize in QGIS with Google Maps as the background. Digitizing with constant zoom works fine. But if the zoom is changed, the digitized vectors don't match the Google Maps background ...
2
votes
1answer
1k views
Arrowhead in polyline google map v3
I would like to create a map, that shows a vehicle traveled path. The map should shows arrowhead for each turning.
I need to show the map like this.
I can create the map by following code
var ...
10
votes
3answers
2k views
Open source alternatives to Google's StreetView engine?
I am looking to create an open source javascript app using either Leaflet or OpenLayers. Is there any way to implement panoramic views (similar to Google's StreetView) into either of these, or any ...
0
votes
0answers
42 views
Polygon colors overlap when zoom in the google map [closed]
I have posted this question in StackExchange previously with a different heading, but did not got much response. Posting this time again with some more clarification.
I have implemented a google map ...
1
vote
0answers
56 views
polygon color changes automatically when zooming map [closed]
I have implemented a google map using V3 js API. I am drawing about 500 zip code polygons inside the map. The colouring of the zip code polygons depends upon certain conditions which is working fine. ...
3
votes
1answer
150 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: ...
15
votes
5answers
5k views
Map projection in OpenLayers
I want to overlay some data whose projection is WGS-84 on Google map layer in OpenLayers. But I just can't make them in the right place. I did as follows:
map = new OpenLayers.Map('map', {
...
1
vote
0answers
151 views
Displaying a dynamic KML file on Google Maps as it is on Google Earth
how can i display my kml files through network link on Google Maps instead of showing it on Google Earth.
I have tried the step mentioned on this link
...
0
votes
0answers
26 views
Simulating Random Movement Google Maps [duplicate]
Hi i have a pair of longitude and latitude coordinates and i would like to make a marker move on a map the path that it moves should be randomly generated however i want the marker to move 1 km every ...
3
votes
1answer
290 views
Google maps and Ordnance Survey derived data licence restrictions
There's been an on-going question about whether it is legal to display data derived from Ordnance Survey licenced mapping via google maps.
By derived data, I mean geometries which have been copied ...
1
vote
1answer
83 views
How to view the whole KML
When I load a KML in Google maps, it doesn't show all polygons, instead there are Google "next-previous" pages, each containing parts of the KML. How can I view all the information in one page?
...
0
votes
0answers
30 views
Google map goes blank when triggering click event outside [closed]
I have created a google map using V3 js API, and inside the map I am showing multiple markers. When I am clicking on a markers it does an ajax call and shows the result in the infowindow. I have added ...
2
votes
3answers
128 views
Best program for crowd-sourced polygons on Gmaps
Looking for a way to crowd-source polygon creation on GMaps (in a wiki environment) that doesn't involved ESRI's expensive server software.
Requirements:
- a bunch of different wiki pages can be ...
4
votes
2answers
233 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)?
0
votes
2answers
123 views
how to use mapproxy to serve WMS from reprojected google maps tiles
how to use mapproxy to serve WMS from reprojected google maps tiles, i have searched for docs, but there's no docs which describe how to add google maps as source.
1
vote
2answers
102 views
Google Maps Markers inconsistent as they're drawn?
I've playing around with the google maps api and am puzzled at the following behavior. If I use mPoint as the LatLng for my marker, the marker is rendered on a different point on the map as opposed ...
0
votes
1answer
152 views
How to draw straight lines inside google map polygon [closed]
I have created a google map using google map javascript API V3. I am drawing number of zipcode polygons. The polygons are of different colors depending upon some condition. Now I want to draw straight ...
4
votes
2answers
272 views
Openlayers - Vector layer polygon doesn't move in-synch with Google V3 baselayers
When a polygon is drawn on the map and the map is dragged, the position of the polygon relative to the GM V3 base changes.
function init() {
var map = new OpenLayers.Map('map');
var gsat = ...
4
votes
3answers
3k views
OpenLayers: Showing a WFS overlay on top of Google Maps
I have found similar questions asked previously, but I still fail to get a simple WFS point layer to work using OpenLayers and Google Maps. The original code I used was based on WFS polygon layers I ...
14
votes
3answers
336 views
How are Google serving up their Styled Maps?
As we all know, Google changed web mapping when they introduced Google Maps. At the time of writing this, tiled maps are now the norm with web mapping.
For example, with ArcGIS Server, you cache ...
1
vote
1answer
67 views
Data points Imported into QGIS are in the middle of ocean
I'm new to QGIS and tried importing some GTFS data in the CSV format (stops.txt). The project CRS, base map CRS and GTFS CRS have all been set to Google Mercator, but the points that are supposed to ...
10
votes
6answers
826 views
What is this “brown spot” in Google maps?
I was in Google maps today and noticed near Baltimore, US where the river is, there's a huge brown spot. Is this due to all of the waste? If so, will this keep going all the way into the ocean?
6
votes
1answer
541 views
What causes these shiny artifacts in Google Maps imagery?
Do you know what causes artifacts like this one:
Source: ...
