Or maybe to separate the GEO-Catholics and Protestants?
At 11:40 AM 7/29/02, you wrote:
>to constrain the GEO-cows?
>
>(my apologies - couldn't hold back)
>
>
>-----Original Message-----
>From: Paul Hastings [mailto:[EMAIL PROTECTED]]
>Sent: Monday, July 29, 2002 2:31 PM
>To: CF-Talk
>Subject: Re: GEOFENCING
>
>
>> I want to set up a GEO-Fence for Northern Ireland,
>
>whats a geo-fence?
>
>> I want the geofence to be comprised of four areas,
>> the North West, the South West, the North East and the South East
>
>don't need no stinking math ;-) well not much anyway.
>
>-find the y value that divides your area into north & south quadrants.
>-find the x value that divides your area into east & west quadrants.
>-examine the accuracy of your coordinates & find a guard digit value to
>help you determine if a given point's x,y is within a "fuzzy" distance
>of your north-south & east-west boundaries. if you're using decimal
>degrees (DD) then maybe 0.001 but it really depends on how accurate your
>coordinates are.
>
><!--- north-south --->
><cfif (thisY - minY) gte someGuardDigit>
> <!--- + values north --->
> <cfset location="N">
><cfelse>
> <!--- - values south --->
> <cfset location="S">
></cfif>
>
><!--- east-west --->
><cfif (thisX - minX) gte someGuardDigit>
> <!--- + values west --->
> <cfset location=location&"W">
><cfelse>
> <!--- - values east --->
> <cfset location=location&"E">
></cfif>
>
>
>
>
>
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