Here we go again...: lj_nifty

Please, if you don't trust either me or the communication line you're on, temporarily change your password to use the meme. Otherwise, look back to the last post and use my non-password version. I've kept the features as close as possible, except for the friends-only and 25-post constraints. I hope that OpenID or some other method (see lj_dev) will soon provide I means for non-password authentication (i.e. generic nonces or fast-expiration session cookies).

[edit2]
Check out this link to see a visualization of the global meme hits. Perl + XML + Java.
Source included!
[/edit2]

[edit]
If anyone is interested in viewing the spread of the meme through user entries, go check this out!

import re

e = list()
p = re.compile("/users/([A-Za-z0-9_]+)/([0-9]+).html")
for l in open('access.log'):
	if (l.find('ljstat') != -1) or (l.find('ljdist') != -1) or (l.find('ljmdist') != -1):
		try:
			m = p.findall(l).pop()
			if m[0] != 'g0thm0g':
				uri = 'http://www.livejournal.com/users/' + m[0] + '/' + m[1] + '.html'
				if not uri in e:
					e.append(uri)
	
		except (IndexError):
			pass


for entry in e:
	print '<div><a href="' + entry + '">' + entry + '</a></div>'

[/edit]

Monthly Distribution of g0thm0g's Journal Entries

32	26	57	46	73	8
Jan	Feb	Mar	Apr	May	Jun
23	25	41	16	35	37
Jul	Aug	Sep	Oct	Nov	Dec

σ: 17.870536102928

σ²: 319.35606060606

Least-Squares Pentic Regression:
-0.014027149321269x⁵ + 0.44415449746338x⁴ + -4.7536250514199x³ + 18.216838920887x² + -7.7951306046973x¹ + -3.9545454545408x⁰

Created by g0thm0g!

<!DOCTYPE html
     PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
     "DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head><title>LJ Time Chart - Complete Journal!</title><style type="text/css">body { font-family:Verdana, Sans-serif; font-size:12px; }</style></head>
  <body>
<?php
//PEAR libs
require_once("XML/RPC.php");
require_once 'Math/Stats.php';
//check out phpMath for PHP JAMA and PDL
require_once 'JAMA/build-05/Matrix.php';

//least-squares regression for arbitrary-degree polynomial
function polyfit($X, $Y, $n) {  
  for ($i = 0; $i < sizeof($X); $i++)
    for ($j = 0; $j <= $n; $j++)
      $A[$i][$j] = pow($X[$i], $j);
  for ($i=0; $i < sizeof($Y); $i++)
    $B[$i] = array($Y[$i]);   
  $matrixA = new Matrix($A);
  $matrixB = new Matrix($B);
  $C = $matrixA->solve($matrixB);
  return $C->getMatrix(0, $n, 0, 1);
}

//iterate through coefficient vector and format polynomial
function printpoly( $C = null ) {
  for($i = $C->m - 1; $i >= 0; $i-- ) {
    $r = $C->get($i, 0);
    if ( abs($r) <= pow(10, -9) )
      $r = 0;
    if ($i == $C->m - 1)
      echo $r . "x<sup>$i</sup>";
    else if ($i < $C->m - 1)
      echo " + " . $r . "x<sup>$i</sup>";
    else if ($i == 0)
      echo " + " . $r;
  }
}

class LJ_Client {
  var $if = null;
  var $user = null;
  var $password = null;
  
  function LJ_Client($user=null, $password=null, $proxy_host=null, $proxy_port=null, $proxy_user=null, $proxy_password=null) {
    $this->user = $user;
    $this->password = $password;
    $this->if = new XML_RPC_Client('/interface/xmlrpc', 'www.livejournal.com', 80, $proxy_host, $proxy_port, $proxy_user, $proxy_password);
  }
  
  function getEvents($n = 50, $before = null) {
    if($before == null) {
        $before = date("Y-m-d H:i:s");
    }
    
    $msg = new XML_RPC_Message('LJ.XMLRPC.getevents', 
        array(XML_RPC_encode(array('username' => $this->user,
          'hpassword' => md5($this->password), 
          'selecttype' => 'lastn', 
          'howmany' => $n,
          'ver' => 1,
          'beforedate' => $before))));
    
     $resp = $this->if->send($msg);
     
     if (!$resp) {
        echo 'Communication error: ' . $this->if->errstr;
        exit;
    }
    
    if (!$resp->faultCode()) {
        $val = $resp->value();
        $data = XML_RPC_decode($val);
        return $data['events'];
    } else {
        echo '<b style="color:#f00;">';
         echo 'Fault Code: ' . $resp->faultCode() . "\n";
        echo 'Fault Reason: ' . $resp->faultString() . "\n";
        echo '</b>';
    }      
  }
}

$user = $_REQUEST['user'];
$pass = $_REQUEST['password'];

$c = new LJ_Client($user, $pass);

$events = $c->getEvents(50);

while($o = end($events)) {
    $ldate = $o['eventtime'];
    $r = $c->getEvents(50, $ldate);
    if(sizeof($r) == 0) {
        break;
    } else {
        $events = array_merge($events, $r);
    }    
}

$m_dist = array();

foreach ($events as $e) {
  $r = split('-', current(split(' ', $e['eventtime'])));
  $m = (int)$r[1];
  $m_dist[$m]++;  
}

if(sizeof($m_dist) > 1) {
    $s = new Math_Stats();
    $s->setData($m_dist);
    $stats = $s->calcFull();
}

$inc = 128 / max($m_dist);
ob_start();
echo '<div><b>Monthly Distribution of ' . $_REQUEST['user'] . '\'s Journal Entries</b></div><br />';
echo '<table style="border:1px solid #000;background-color:#eee;">';
echo '<tr>';
foreach(range(1,6) as $month) {
    $box_height = $inc * (int)$m_dist[$month];
    if($box_height != 0) {
      $x = '<div style="background-color:#000;height:' . $box_height . 'px;color:#000;">&nbsp;</div>' . $m_dist[$month];
    } else {
      $x = "&nbsp;";
    }
    echo '<td style="vertical-align:bottom;text-align:center;vertical-align:bottom;font-weight:800;padding:8px;color:#000;">' . $x . '</td>';
}
echo '</tr><tr>';
foreach(range(1,6) as $month) {
    echo '<td style="text-align:center;padding:4px;color:#000;">' . date("M", mktime(null, null, null, $month))  . '</td>';
}
echo '</tr>';
echo '<tr>';
foreach(range(7,12) as $month) {
    $box_height = $inc * (int)$m_dist[$month];
        if($box_height != 0) {
      $x = '<div style="background-color:#000;height:' . $box_height . 'px;color:#000;">&nbsp;</div>' . $m_dist[$month];
    } else {
      $x = "&nbsp;";
    }
    echo '<td style="vertical-align:bottom;text-align:center;vertical-align:bottom;font-weight:800;padding:8px;color:#000;">' . $x . '</td>';
}
echo '</tr><tr>';
foreach(range(7,12) as $month) {
    $box_height = $inc * (int)$m_dist[$month];
    echo '<td style="text-align:center;padding:4px;color:#000;">' . date("M", mktime(null, null, null, $month))  . '</td>';
}
echo '</tr>';
echo '</table>';
echo '<br />';
echo '<div>&sigma;: '. $stats['stdev'] . '</div>';
echo '<div>&sigma;<sup>2</sup>: '. $stats['variance'] . '</div>'; 

$r = array();
for($n = 1;$n < 13;$n++) {
    if(isset($m_dist[$n])) {
        $r[$n] = $m_dist[$n];
    } else {
        $r[$n] = 0;
    }
}

$points = new Matrix(array(range(1, 12), $r));
echo '<div><b>Least-Squares Pentic Regression:</b><br />'; printpoly(polyfit(range(1, 12), $r, 5)); echo '</div>';
echo '<br />';
echo '<form style="padding:8px;" action="http://ohsonline.no-ip.com/ljmdist.php" method="post"><b>When do you post?</b><div style="margin:4px;"><b>Username</b>: <input style="padding:2px;vertical-align:middle;border:1px solid #000;font-size:11px;" type="text" name="user" value="' . $_REQUEST['user'] . '" /></div><div style="margin:4px;"><b>Password:</b> <input style="padding:2px;vertical-align:middle;margin:4px;border:1px solid #000;font-size:11px;" type="password" name="password"  /></div><input type="submit" value="Chart!" /></form>'; 
echo '<div><b>Created by <a href="http://livejournal.com/users/g0thm0g" style="font-weight:800;">g0thm0g</a>!</b></div>';
$c = ob_get_contents();
$c = str_replace("<", "&lt;", $c);
$c = str_replace(">", "&gt;", $c);
ob_end_flush();
echo '<div><b>Meme HTML:</b></div>';
echo '<textarea cols="80" rows="8">' . $c . '</textarea>';
?>
  </body>
</html>

So it's a little sloppy, but she gets the job done. Have fun.

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