Ok I understand. So what you're going to want to do is create a LatLngBounds class, and then extend it with LatLngs that are north, south, east, and west of your center point based on your given radius. Once you have have the LatLngBounds created you can then use its functions to get the appropriate zoom level to have that area in the view area. Now to get the Radius.
Now to get the correct radius is a little tricker, here is a website you can visit http://www.movable-type.co.uk/scripts/latlong.html . The formula you will want to look at will be 'Destination point given distance and bearing from start point' Jonathan Scribblemaps.com On Dec 15, 4:19 pm, Mark Shen <[email protected]> wrote: > HI Jonathan; > > Thank you for your email. > > I have a location with latitudes and longitudes, I want to do following > thing > > #1. set the location as ceter of Map > #2. I want to see the area arond the location.I use the location as center > of circle,and I have a circle area. > I have couple option for radius (1km,5km,10km,20km etc).I need the Map > zoom update automitically when I select > different value of radiu > > I know how to do 1#,but I do not know how to do #2. > > the idea is similarhttp://www.freemaptools.com/radius-around-point.htm.butIdo > not need > draw the circle and only want to see the circle area. > > please help me > > Thanks a lot. > > Mark > > On Tue, Dec 15, 2009 at 3:52 PM, Jonathan Wagner > <[email protected]>wrote: > > > > > Could you try to elaborate a little more, I am having a little trouble > > understanding what you're trying to accomplish. > > > Jonathan > > Scribblemaps.com -- You received this message because you are subscribed to the Google Groups "Google Maps API For Flash" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-api-for-flash?hl=en.
