- added prototype page for showing info about user population

svn path=/trunk/boinc/; revision=13565

checkin_notes

@@ -8378,3 +8378,8 @@ Bruce 10 Sept 2007
     doc/
         upload.php
 
+David  11 Sept 2007
+    - added prototype page for showing info about user population
+
+    html/ops/
+        user_graph.php

html/ops/user_graph.php

@@ -0,0 +1,108 @@
+<?php
+
+function draw($xarr, $arr) {
+    require_once ("jpgraph/src/jpgraph.php");
+    require_once ("jpgraph/src/jpgraph_line.php");
+    require_once ("jpgraph/src/jpgraph_bar.php");
+    require_once ("jpgraph/src/jpgraph_log.php");
+
+    // Create the graph. These two calls are always required
+    $graph = new Graph(350,250,"auto");    
+    //$graph->SetScale("lin");
+    //$graph->SetScale("textlin");
+    $graph->SetScale("loglin");
+
+    // Create the linear plot
+    $lineplot=new BarPlot($arr, $xarr);
+    $lineplot->SetColor("blue");
+
+    // Add the plot to the graph
+    $graph->Add($lineplot);
+
+    // Display the graph
+    $graph->Stroke();
+}
+
+function show_text($xarr, $yarr) {
+    $n = sizeof($xarr);
+    echo $n;
+    echo $xarr[1];
+    for ($i=0; $i<$n; $i++) {
+        echo "<br>$xarr[$i] $yarr[$i]\n";
+    }
+}
+
+function show_graph() {
+    require_once("../inc/db.inc");
+    db_init();
+
+    $xaxis = $_GET['xaxis'];
+    $yaxis = $_GET['yaxis'];
+    $granularity = $_GET['granularity'];
+
+    $fields = 'host.id';
+    if ($xaxis == 'active') {
+        $query = "select $fields, max(rpc_time) as max_rpc_time from host, user where host.userid=user.id group by userid";
+    } else {
+        $query = 'select $fields from user';
+    }
+    $result = mysql_query($query);
+    $yarr = array();
+    $now = time();
+    $maxind = 0;
+    while ($user = mysql_fetch_object($result)) {
+        $val = $now - $user->max_rpc_time;
+        $ind = $val/$granularity;
+        $ind = (int)$ind;
+        $yarr[$ind]++;
+        if ($ind > $maxind) $maxind = $ind;
+    }
+    $xarr = array();
+    for ($i=0; $i<=$maxind; $i++) {
+        $xarr[$i] = $i;
+        if (is_null($yarr[$i])) $yarr[$i]=0;
+    }
+    show_text($xarr, $yarr);
+}
+
+function show_form() {
+    echo "
+        <form action=user_graph.php>
+        X axis:
+        <select name=xaxis>
+        <option value=active>Active time
+        </select>
+
+        <p>
+        Y axis:
+        <select name=yaxis>
+        <option value='count'>Count
+        <option value='rac'>RAC
+        <option value='tc'>Total credit
+        </select>
+
+        <p>
+        Only currently active users?
+        <input type=checkbox name=active>
+
+        <p>
+        Granularity:
+        <input name=granularity value=86400>
+
+        <p>
+        Show as text?
+        <input type=checkbox name=show_text>
+
+        <p>
+        <input type=submit name=submit value=OK>
+        </form>
+    ";
+}
+
+if ($_GET['submit']) {
+    show_graph();
+} else {
+    show_form();
+}
+
+?>