[php]
/*
Plugin Name: Distance
Plugin URI: http://bokeconsulting.com/programming/plugins/distance/
Description: Calculates distance between two map coordinates.
Version: 0.1
Author: Bruce Duggan
Author URI: http://bokeconsulting.com
Copyright: Bruce Duggan 2014
Acknowledgement:
The code used in this plugin is based on Martin Stoeckli's code
found at http://stackoverflow.com/users/575765/martinstoeckli,
who in turn based his code on the Vincenty formula.
License: GPL
This program is free software: you can redistribute it and/or modify
it under the terms of the latest version of the GNU General Public License
as published by the Free Software Foundation. It is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
add_shortcode('distance','distance_func');
function distance_func($atts){
extract( shortcode_atts(array(
'vals' => '0',
), $atts ) );
$coordinates = explode(',', $vals);
$latitudeFrom = $coordinates[0];
$latitudeTo = $coordinates[1];
$longitudeFrom = $coordinates[2];
$longitudeTo = $coordinates[3];
$earthRadius = 6371;
$latFrom = deg2rad($latitudeFrom);
$lonFrom = deg2rad($longitudeFrom);
$latTo = deg2rad($latitudeTo);
$lonTo = deg2rad($longitudeTo);
$lonDelta = $lonTo - $lonFrom;
$a = pow(cos($latTo) * sin($lonDelta), 2) + pow(cos($latFrom) * sin($latTo) - sin($latFrom) * cos($latTo) * cos($lonDelta), 2);
$b = sin($latFrom) * sin($latTo) + cos($latFrom) * cos($latTo) * cos($lonDelta);
$angle = atan2(sqrt($a), $b);
$distance = $angle * $earthRadius;
$rounded = round($distance,-1);
$roundedMore = round($distance,-2);
$roundedMost = round($distance,-3);
$roundedLess = round($distance);
if ( is_user_logged_in() ) {
if ($distance > 1900) {
return number_format($roundedMost);
} elseif ($distance > 190) {
return number_format($roundedMore);
} elseif ($distance > 19) {
return number_format($rounded);
} else {
return number_format($roundedLess);
}
}
}
/*End Of File*/
[/php]
[text-blocks id="table-section-line"]
|
product |
amount |
|
form |
location |
distance |
price |
buy |
| ▲ |
PAL KERNEL SHELLS |
5,000,000 |
kilograms |
bags |
Nigeria |
[distance vals="6.424484,,3.446274,"] |
US$70 |
/ tonne |
 |
|
| Details |
|
source material: |
oil palm |
|
|
|
primary uses: |
fuel for heat |
|
secondary uses: |
fuel for electricity generation |
|
|
|
not suitable for: |
to make ethanol |
|
|
|
Does seller deliver? |
|
|
Is delivery included in price? |
no |
|
|
|
Augerable? |
|
|
|
|
Storable? |
yes - inert |
|
|
|
calorific value: |
min: 3,600 Kcal/kg avg: 3,900 Kcal/kg max: 4,200 Kcal/kg |
|
|
|
moisture content: |
min: 12% avg: 15% max: 18% |
|
|
|
ash residue: |
min: 5% avg: 5% max: 6% |
|
|
|
note to potential buyer: |
Payment by letter of credit |
|
|
[text-blocks id="table-section-line"]
Don't see the biomass you need at the price you want? Sign In or Join and add a want-to-buy listing.
[text-blocks id=fine-print-trade-show]
