added prediction (based on current month)

draw.php

@@ -220,7 +220,7 @@ function generateChart($today,$mode,$hours=0,$dateInput){
 	//only redraw, if new data was added, indicated by 'newData' token left by update.php
 	$newData=false;
 	if(file_exists('newData')){
-		unlink('newData');
+		@unlink('newData');
 		$newData=true;
 	}
 	$file_exists=false;

index.php

@@ -51,6 +51,8 @@ if(isset($_GET['mode']) && $_GET['mode']=='last'){
 }else if($type!='none' && ($type=="temp" || $type=="ambi" || $type=="humi" || $type=="baro")){
 	//mode: day
 	$mode=1;
+}else if (isset($_GET['mode']) && $_GET['mode']=='predict'){
+	$mode=4;
 }else{
 	$html.="Keine weiteren Angaben: Heutige Temperatur wird angezeigt";
 	$mode=1;
@@ -84,11 +86,13 @@ if($mode==1){
 		$date=array(date("Y"),date("n"),date("j"));
 	}
 }
+$db=new DBLib($database['host'],$database['user'],$database['password'],$database['database']);
 if(!$error===false){
 	$html.=$error;
-}else{
-	$db=new DBLib($database['host'],$database['user'],$database['password'],$database['database']);
+}else if($mode != 4){
 	$html.=generateChart($today,$mode,$num,$date);
+}else{
+	include('predict.php');
 }
 $runtime=microtime(true)-$start;
 $html.="<div style='position:fixed;bottom:20px;right:50px;' >Runtime: ".$runtime." s</div>";

predict.php

@@ -0,0 +1,129 @@
+<?php
+
+$start=microtime(true);
+
+function sim($a, $b){
+	$averageA=average($a,$b);
+	$averageB=average($b,$a);
+	$div=0.0;
+	$sumA=0;
+	$sumB=0;
+	foreach($a as $i=>$value){
+		if(!empty($value) && !empty($b[$i])){
+			$div+=($value - $averageA)*($b[$i] - $averageB);
+			$sumA+=pow(($value-$averageA), 2);
+			$sumB+=pow(($b[$i]-$averageB), 2);
+		}
+	}
+	return ($div / (sqrt($sumA) * sqrt($sumB)));
+}
+function r($p,$i,$data){
+	return average($p,$p) + c($p,$i,$data);
+}
+function c($p,$i,$data){
+	$divident=$divisor=0.0;
+	foreach($data as $q){
+		if (empty($q[$i]) || $p===$q){
+			continue;
+		}
+		$simPQ=sim($p,$q);
+		$averageQ=average($q,$p);
+		$divisor+=abs($simPQ);
+		$divident+=(($q[$i]-$averageQ)*$simPQ);
+	}
+	return ($divident / $divisor);
+}
+function wrapR($subject, $item, $data){
+	return r($data[$subject], $item, $data);
+}
+function average($set, $controlSet){
+	$average=0.0;
+	$count=0;
+	foreach($set as $i=>$value){
+		if (!empty($value) && !empty($controlSet[$i])){
+			$average+=$value;
+			$count+=1;
+		}
+	}
+	return ($average / $count);
+}
+
+#$ratings=array(
+#	"alice"=>array(5, 1, 0, 3, 2),
+#	"bob"=>array(3, 1, 5, 4, 2),
+#	"carol"=>array(4, 0, 5, 0, 3),
+#	"chuck"=>array(1, 4, 0, 0, 2),
+#	"dave"=>array(0, 4, 3, 0, 1),
+#	"eve"=>array(5, 4, 5, 4, 3),
+#	"fran"=>array(4, 0, 0, 0,2),
+#	"gordon"=>array(3, 4, 0, 5, 1),
+#	"isaac"=>array(5, 0, 4, 3, 0),
+#	"ivan"=>array(3, 1, 1, 0, 1)
+#);
+#echo sim($ratings['alice'],$ratings['ivan']);
+#echo "<br>";
+#echo "<br>";
+#echo wrapR('alice', 2, $ratings);
+#
+#die();
+
+
+
+echo "<title>[BETA] prediction</title>";
+
+$date=array(date("Y"),date("n"),date("j"));
+#$date=array(2014, 8, 26);
+$diffuse=0;
+
+$selectionStart=mktime(0,0,0,$date[1],$date[2],$date[0]);
+$selectionEnd=$selectionStart+(60*60*(24+date("I",$selectionStart)));
+$rangeSelector=array('time',$selectionStart-$diffuse,$selectionEnd+$diffuse);
+$data= $db->selectRange('temp2','*',$rangeSelector);
+foreach($data as $record){
+	$tupel=$record;
+}
+$data=null;
+
+#var_dump($tupel);
+#echo date("H:i:s", $tupel['time']);
+$month=date('n', $tupel['time']);
+$year=date('Y', $tupel['time']);
+$day=date('j', $tupel['time']);
+
+$div=getdiv('temp2');
+for($i=1; $i<=$day;$i++){
+	$selectionStart=mktime(0,0,0,$month,$i,$year);
+	$selectionEnd=$selectionStart+(60*60*(24+date("I",$selectionStart)));
+	$rangeSelector=array('time',$selectionStart-$diffuse,$selectionEnd+$diffuse);
+	$data= $db->selectRange('temp2','*',$rangeSelector);
+	$sumary[]=prepareData($data,$div,$selectionStart,$selectionEnd);
+}
+
+#foreach($sumary as $key=>$daily){
+#	echo "<tr><td>Day: ".($key+1)."</td>";
+#	foreach ($daily as $key=>$hour){
+#		echo "<td>".$key."-".$hour." ";
+#	}
+#	echo "</tr>";
+#}
+echo "prediction for ".date("d.m.Y");
+echo "<table border='border-collapse'>";
+echo "<tr><th>hour</th> <th>prediction</th> <th>difference</th><th>actual measurement</th></tr>";
+for ($i=0;$i<25;$i++){
+	$r=wrapR(25,$i,$sumary);
+	$r=round($r,2);
+	echo "<tr><td>".$i."</td><td>".$r."</td><td>".($r-$sumary[25][$i+1])."</td><td>".$sumary[25][$i+1]."</td></tr>";
+}
+echo "</table>";
+
+
+#for($i=0;$i<=24;$i++){
+#	$hours[]=$i*60*60;
+#}
+#var_dump($hours);
+#var_dump(array($month,$year,$day));
+$runtime=microtime(true)-$start;
+echo "<div style='position:fixed;bottom:20px;right:50px;' >Runtime: ".$runtime." s</div>";
+$db->close();
+die();
+

recent

@@ -0,0 +1 @@
+Temperatur: 14.75 C<br>Luftfeuchtigkeit: 84.9 %<br>Helligkeit: 0.01 Lux<br>Luftdruck: 981.881mbar

update.php

@@ -12,7 +12,7 @@ $temp=$humi=$ambi=$baro=0;
 foreach($dir as $file){
 	if(validFile($file)){
 		file_put_contents('newData',"");
-		#echo "parsing file: ".$file."\n";
+		echo "parsing file: ".$file."\n";
 		importLogfiletoDatabase('data/'.$file);
 		//recent records on frontpage:
 		if($file[0].$file[1].$file[2].$file[3].$file[4] == "temp2"){
@@ -27,7 +27,7 @@ foreach($dir as $file){
 		///
 		unlink('data/'.$file);
 	}else{
-		#echo "invalidFile: ".$file." \n";
+		echo "invalidFile: ".$file." \n";
 	}
 }
 $db->close();