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	diff --git a/src/applications/fact/controller/PhabricatorFactChartController.php b/src/applications/fact/controller/PhabricatorFactChartController.php
	index 1872e065b3..302ab6afda 100644
	--- a/src/applications/fact/controller/PhabricatorFactChartController.php
	+++ b/src/applications/fact/controller/PhabricatorFactChartController.php
	@@ -1,92 +1,106 @@
	<?php

	/*
	* Copyright 2012 Facebook, Inc.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	final class PhabricatorFactChartController extends PhabricatorFactController {

	public function processRequest() {
	$request = $this->getRequest();
	$user = $request->getUser();

	$table = new PhabricatorFactRaw();
	$conn_r = $table->establishConnection('r');
	$table_name = $table->getTableName();

	$series = $request->getStr('y1');

	$specs = PhabricatorFactSpec::newSpecsForFactTypes(
	PhabricatorFactEngine::loadAllEngines(),
	array($series));
	$spec = idx($specs, $series);

	$data = queryfx_all(
	$conn_r,
	'SELECT valueX, epoch FROM %T WHERE factType = %s ORDER BY epoch ASC',
	$table_name,
	$series);

	$points = array();
	$sum = 0;
	foreach ($data as $key => $row) {
	$sum += (int)$row['valueX'];
	$points[(int)$row['epoch']] = $sum;
	}

	if (!$points) {
	// NOTE: Raphael crashes Safari if you hand it series with no points.
	throw new Exception("No data to show!");
	}

	+ // Limit amount of data passed to browser.
	+ $count = count($points);
	+ $limit = 2000;
	+ if ($count > $limit) {
	+ $i = 0;
	+ $every = ceil($count / $limit);
	+ foreach ($points as $epoch => $sum) {
	+ $i++;
	+ if ($i % $every && $i != $count) {
	+ unset($points[$epoch]);
	+ }
	+ }
	+ }
	+
	$x = array_keys($points);
	$y = array_values($points);

	$id = celerity_generate_unique_node_id();
	$chart = phutil_render_tag(
	'div',
	array(
	'id' => $id,
	'style' => 'border: 1px solid #6f6f6f; '.
	'margin: 1em 2em; '.
	'background: #ffffff; '.
	'height: 400px; ',
	),
	'');

	require_celerity_resource('raphael-core');
	require_celerity_resource('raphael-g');
	require_celerity_resource('raphael-g-line');

	Javelin::initBehavior('line-chart', array(
	'hardpoint' => $id,
	'x' => array($x),
	'y' => array($y),
	'xformat' => 'epoch',
	'colors' => array('#0000ff'),
	));

	$panel = new AphrontPanelView();
	$panel->setHeader('Count of '.$spec->getName());
	$panel->appendChild($chart);

	return $this->buildStandardPageResponse(
	$panel,
	array(
	'title' => 'Chart',
	));
	}

	}

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