RE: GEOFENCING --(rediculous OT reply inside)
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=locationW cfelse !--- - values east --- cfset location=locationE /cfif --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.380 / Virus Database: 213 - Release Date: 24/7/2545 __ Signup for the Fusion Authority news alert and keep up with the latest news in ColdFusion and related topics. http://www.fusionauthority.com/signup.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: GEOFENCING --(rediculous OT reply inside)
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=locationW cfelse !--- - values east --- cfset location=locationE /cfif --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.380 / Virus Database: 213 - Release Date: 24/7/2545 __ This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
