You can use the ESRI, yahoo, mapquest, google, etc map APIs.  You can also
read the ArcView Shape files and associated DBF files using this library and
create your own components.
http://code.google.com/p/vanrijkom-flashlibs/

I started with that library to create a heat-map component using maps.  The
problem with embedding or even downloading ArcView shape files is their size
- even the US is over a meg.  The problem is that shape files just store
points and there are a great number of points.  You can reduce the size by
storing in your own format (a fixed width integer is half the size of a
floating point number).  I did that plus ran some map simplification
algorithms to reduce the number of points and ended up getting even a world
map down to under 100K.  Sadly I cannot share the code (it was done for
hire).

On Fri, Mar 14, 2008 at 12:52 AM, kapil b <[EMAIL PROTECTED]> wrote:

>  Hi All,
>
> Does anybody have idea how to implement gis(geographyical information
> system) in flex with the gis data in it.
>
> What kind of gis data format files the flex requires so that i can
> retrieve the data and display it in the UI.
>
>
> Thanks
>
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