Hi Jonathan, I want to change the radius by slider and the Map zoom level will update automatically when I give different radius. so I can see the area in circle.
I only have center point and radius.I need the Map zoom level change automatically for different radius. Thanks Mark On Tue, Dec 15, 2009 at 4:54 PM, Jonathan Wagner <[email protected]>wrote: > 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]<google-maps-api-for-flash%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-maps-api-for-flash?hl=en. > > > -- 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.
