rails google maps

Some time ago, due to work reasons, the study of Google Maps tile-related operations. Know the latitude and longitude of a point and the map level, get the URL of the tile where the point resides; the URL of a tile is known, the upper-left corner of the tile is computed, the latitude and longitude of the tiles are known, and the pixel values on the world map are computed for a point latitude and longitude a

If you have Google mobile Maps on your phone, you can find that as long as your mobile phone can connect GPRS, even if there is no GPS function, you can locate the location of your phone, but the accuracy is not accurate. Before we explore this principle, we need to know some mobile knowledge about what is Mnc/lac/cell ID.Mobile Network Code (MNC)Mobile network number, China Unicom CDMA System MNC 03, China

During personal space project development, modules on the page can drag and drop their positions freely. The module named "" contains an instance of a Google map object. We use the API service provided by Google Maps V3. During the drag and drop operation on its container, in IE7, a bug occurs: the map block is overwritten by the background and background image

As follows: JavaScript code: New encapsulated version:VaR map; var geocoder = new Google. Maps. geocoder ();/***-25.363882, 131.044922 * initial map */ Function initialize (LAT1, lng1, zoom, canvas_div ){ VaR mylatlng = new Google. Maps. latlng (LAT1, lng1 ); VaR myoptions = { Zoom: Zoom, Center: mylatlng, Maptype

Google maps has become an essential tool for home-based travel. Chrome extended select to get maps is useful when you book a hotel online or schedule a travel trip, after you select the address information on the webpage, as long as it is indeed an address (rather than any other text, this extension has its own recognition method, which must be 3-15 words, and co

The source code is as follows: The first two scripts in this Code point to the Services released by Google map API and ArcGIS online. With these two scripts, you can call the objects and methods in Google map. From the second ESRI script, it seems that a lot of code is used, so it may be difficult to use your own ArcGIS Server to publish a similar service, I do not know how to register my service on ArcGI

Google Maps API V2 Android mobile phone development in China does not support Google Play service problems-graphic tutorial The use of Google Maps in China is a headache and troublesome. I cannot understand why Google cannot be us

Recently the company needs to participate in an international show, need to integrate Google Maps and Google search apk, attention is the source code integration. In this process encountered a number of pits, summed up to hope that everyone attention, after encountering similar problems can be consulted.As we all know, the source code integration APK mainly has t

How can I use Google map data in the Google Maps API? This is almost the most common question I have heard about Google Maps APIs. As we all know, Google Maps does not have a detailed

03 December 2012 New Google Maps Android API now part of Google Play services Posted by Reto Meier, Evan Rapoport, and Andrew Foster Google Play services is our new platform that offers you better integration with Google products, and which provides greater agility for quic

Added Google Maps to Google movie play time search Google continues to promote the integration of Google Maps-based localized search. Google also adds the

When talking about the default control and gmap2 settings on the map, I mentioned the Google map local search bar control. It is very easy to add this control to the map, you do not need to call gmap2.addcontrol (). You only need one sentence: Map. enablegooglebar (); In this way, you can add this search box in the lower left corner of the map and replace the original Google logo image. Currently, you can u

Operations related to google map tiles (js, google Maps v3 ), Some time ago, due to work reasons, I studied tile-related operations on Google Maps. The longitude and latitude of a point and the map level are known to obtain the url of the tile where the point is located. the

Register Google map API key Cheungmine Next, yesterday's topic, today we will first demonstrate how to generate a Google Android-certified fingerprint, which is used to register a Google Map API key. With this key, we can develop Android applications based on Google map APIs. For example, embed

“google.maps.MapTypeControlStyle.HORIZONTAL_BAR” */position: google.maps.ControlPosition.RIGHT /* 显示的位置，默认为RIGHT */},navigationControl: true, /* 是否启用缩放滚动条，默认为true */navigationControlOptions:{style: google.maps.NavigationControlStyle.SMALL, /* 已最简单的形式显示缩放滚动条 */position: google.maps.ControlPosition.TOP_LEFT /* 显示的位置 */},scaleControl: true, /* 是否等比例缩放 */scaleControlOptions: {/* position: google.maps.ControlPosition.TOP_LEFT */},mapTypeId: google.maps.MapTypeId.ROADMAP /* google.maps.MapTypeId.TERRA