Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"

Re: Getting Locations using Distance

by kvale (Monsignor)
on Apr 12, 2006 at 17:28 UTC ( #542902=note: print w/replies, xml ) Need Help??

in reply to Getting Locations using Distance

The easiest approach is to traverse your list of locations and compute the distaance of each location from your designated position. To get locations of zip codes, try Geo::Coder::US:
use Geo::Coder::US; Geo::Coder::US->set_db( "geocoder.db" ); my ($ora) = Geo::Coder::US->geocode( "1005 Gravenstein Hwy N, 95472" ); print "O'Reilly is located at $ora->{lat} degrees north, " "$ora->{long} degrees east.\n";
To compute distances, use Geo::Ellipsoid:
use Geo::Ellipsoid; $geo = Geo::Ellipsoid->new(ellipsoid=>'NAD27', units=>'degrees'); @origin = ( 37.619002, -122.374843 ); # SFO @dest = ( 33.942536, -118.408074 ); # LAX ( $range, $bearing ) = $geo->to( @origin, @dest ); ($lat,$lon) = $geo->at( @origin, 45.0, 2000 ); ( $x, $y ) = $geo->displacement( @origin, $lat, $lon ); @pos = $geo->location( $lat, $lon, $x, $y );


Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://542902]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chilling in the Monastery: (3)
As of 2016-10-25 03:03 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (313 votes). Check out past polls.