Update of /cvsroot/phpweather/phpweather
In directory usw-pr-cvs1:/tmp/cvs-serv19064
Modified Files:
phpweather.php
Log Message:
Support for humidex thanks to Robin Senior <8r...@ql...>.
See this page for an explaination of humidex:
http://www.theweathernetwork.com/help/glossary/humidex.htm
Index: phpweather.php
===================================================================
RCS file: /cvsroot/phpweather/phpweather/phpweather.php,v
retrieving revision 1.28
retrieving revision 1.29
diff -u -3 -r1.28 -r1.29
--- phpweather.php 29 Jun 2002 10:51:08 -0000 1.28
+++ phpweather.php 12 Aug 2002 23:52:03 -0000 1.29
@@ -685,6 +685,20 @@
$decoded_metar['heatindex']['heatindex_c'] =
number_format(($decoded_metar['heatindex']['heatindex_f'] - 32) / 1.8);
}
+
+ /*
+ * Compute the humidity index
+ */
+ if (!empty($decoded_metar['rel_humidity'])) {
+ $e = (6.112 * pow(10, 7.5 * $decoded_metar['temperature']['temp_c']
+ / (237.7 + $decoded_metar['temperature']['temp_c']))
+ * $decoded_metar['rel_humidity'] / 100) - 10;
+ $decoded_metar['humidex']['humidex_c'] =
+ number_format($decoded_metar['temperature']['temp_c'] + 5/9 * $e, 1);
+ $decoded_metar['humidex']['humidex_f'] =
+ number_format($decoded_metar['humidex']['humidex_c'] * 9/5 + 32, 1);
+ }
+
/* Finally we store our decoded METAR in $this->decoded_metar so
* that other methods can use it.
|
