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<?php
// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// actions:
// (none)
// form to choose select and xset; OK goes to:
// snap_form
// if have a snapshot, show its start/end times
// show form to get new snapshot
// snap_action
// make new snapshot
// compare(filter, breakdown)
// show comparison.
// show form to set or change filter or breakdown.
require_once("../inc/bolt_util_ops.inc");
require_once("../inc/bolt_db.inc");
require_once("../inc/bolt.inc");
require_once("../inc/bolt_cat.inc");
require_once("../inc/bolt_snap.inc");
require_once("../inc/util_ops.inc");
$filter = null;
$filter_cat = null;
$breakdown = null;
$breakdown_cat = null;
function compare_case(
$title, $select_unit, $snap, $filter, $filter_cat, $breakdown, $breakdown_cat
) {
// for each select alternative, build an array of xset scores
//
$a = array();
foreach ($snap->recs as $uid=>$x) {
if ($filter && $filter->categorize($x->user) != $filter_cat) {
//echo "<br>$uid rejected by filter ";
continue;
}
if ($breakdown && $breakdown->categorize($x->user) != $breakdown_cat) {
//echo "<br>$uid rejected by breakdown ";
continue;
}
$z = $x->sf->selected_unit;
$u = $x->sf->selected_unit;
$a[$u][] = $x->xr->score;
}
if ($title) {
echo "
<tr class=bolt_head2><td colspan=2><b>$title</b></td></tr>
";
}
foreach ($select_unit->units as $child) {
if (array_key_exists($child->name, $a)) {
$scores = $a[$child->name];
$n = count($scores);
if ($n < 2) {
$x = compare_bar_insuff($child->name, 600);
} else {
conf_int_90($scores, $lo, $hi);
//$x = "($lo, $hi) ($n results)";
$x = compare_bar($child->name, $n, 600, $lo, $hi);
}
} else {
$x = compare_bar_insuff($child->name, 600);
}
echo $x;
}
}
function compare_aux($select_name, $xset_name, $snap) {
global $top_unit, $course_id, $filter, $filter_cat;
global $breakdown, $breakdown_cat;
get_filters_from_form();
$select_unit = lookup_unit($top_unit, $select_name);
if (!$select_unit) error_page("no select unit");
admin_page_head("Unit comparison");
echo "
<link rel=\"stylesheet\" type=\"text/css\" href=\"".URL_BASE."bolt_admin.css\">
The following compares the alternatives of
<b>$select_name</b> with respect to <b>$xset_name</b>.
<p>
";
echo "<table class=\"bolt_box\">";
if ($breakdown) echo "<tr class=bolt_head1><td colspan=2>Total</td></tr>";
compare_case(null, $select_unit, $snap, $filter, $filter_cat, null, null);
if ($breakdown) {
echo "<tr class=bolt_head1><td colspan=2>Breakdown by ".$breakdown->name()."</td></tr>";
foreach ($breakdown->categories() as $c) {
compare_case($c, $select_unit, $snap, $filter, $filter_cat, $breakdown, $c);
echo "<p>";
}
}
echo "</table>";
echo "
<form action=bolt_compare.php>
<input type=hidden name=action value=compare>
<input type=hidden name=course_id value=$course_id>
<input type=hidden name=select_name value=\"$select_name\">
<input type=hidden name=xset_name value=\"$xset_name\">
<table width=600><tr><td>
";
filter_form($filter?$filter->name():"", $filter_cat);
echo "</td><td>";
breakdown_form($breakdown?$breakdown->name():"");
echo "
</td></tr></table>
<p>
<input class=\"btn btn-default\" type=submit value=OK>
</form>
";
admin_page_tail();
}
function show_compare() {
global $course_id;
$select_name = get_str('select_name');
$xset_name = get_str('xset_name');
$s = read_compare_snapshot($course_id, $select_name, $xset_name);
compare_aux($select_name, $xset_name, $s);
}
function show_snap_form($top_unit) {
global $course_id;
$select_name = get_str('select_name');
$xset_name = get_str('xset_name');
admin_page_head("Data snapshot");
$s = read_compare_snapshot($course_id, $select_name, $xset_name);
if ($s) {
$end = date_str($s->time);
echo "
A data snapshot exists for the $s->dur days prior to $end.
";
show_button(
"bolt_compare.php?action=compare&course_id=$course_id&select_name=$select_name&xset_name=$xset_name",
"Use this snapshot",
"Use this snapshot"
);
} else {
echo "There is currently no snapshot.";
}
echo "
<form action=bolt_compare.php>
<input type=hidden name=action value=snap_action>
<input type=hidden name=course_id value=$course_id>
<input type=hidden name=select_name value=\"$select_name\">
<input type=hidden name=xset_name value=\"$xset_name\">
Create a new snapshot using data from the last
<input name=dur value=7> days.
<input class=\"btn btn-default\" type=submit value=OK>
</form>
";
admin_page_tail();
}
function snap_action() {
global $course_id;
$select_name = get_str('select_name');
$xset_name = get_str('xset_name');
$dur = get_int('dur');
$s = write_compare_snapshot($course_id, $select_name, $xset_name, $dur);
compare_aux($select_name, $xset_name, $s);
}
function show_choice($top_unit) {
global $course_id;
admin_page_head("Unit comparison");
echo "
<form action=bolt_compare.php>
<input type=hidden name=course_id value=$course_id>
This tool lets you compare alternative lessons.
These lessons must be included in a 'select' unit,
typically with a random selection function.
This must be followed by an exercise set
that tests for the concepts in the lessons.
<p>
Please choose a select unit
";
choose_select($top_unit);
echo "
and an exercise set
";
choose_xset($top_unit);
echo "
<input type=hidden name=action value=snap_form>
<p>
<input class=\"btn btn-default\" type=submit value=OK>
";
admin_page_tail();
}
$course_id = get_int('course_id');
$course = BoltCourse::lookup_id($course_id);
$top_unit = require_once($course->doc_file());
$action = get_str('action', true);
switch ($action) {
case "": show_choice($top_unit); break;
case "snap_form": show_snap_form($top_unit); break;
case "snap_action": snap_action(); break;
case "compare": show_compare(); break;
default: error_page("Unknown action $action");
}
?>
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