Google analytics api: requestReportData by weeks instead of days?

Question

This is how I am getting the pageviews of a url for a custom interval (usually the date of creation of the url and the present)

$ga->requestReportData(
    $ga_profile_id,
    array('date'),
    array('pageviews'),
    'date', 
    'pagePath == '.$ga_url, 
    $ga_start, /* Creaton day */
    date("Y-m-d", strtotime("0 day", time())), /* Today */
    null,
    1000
);
$results = $ga->getResults();

The thing is that some of the urls are old and then my chart looks too saturated:

So I would like to check the value of the interval in days, and if its big enough; get the pageviews by weeks (and then if its big enough, maybe in months?)

Is it posible?

This is how I am generating the Chart, by the way:

google.load("visualization", "1", {packages:["corechart"]});
  google.setOnLoadCallback(drawChart);
  function drawChart() {
    var data = new google.visualization.DataTable();

    <!-- Create the data table -->
    data.addColumn('string', 'Day');
    data.addColumn('number', 'Lecturas');

    <!-- Fill the chart with the data pulled from Analtyics. Each row matches the order setup by the columns: day then pageviews -->
    data.addRows([
      <?php
      foreach($results as $result) {
          echo '["'.date('M j',strtotime($result->getDate())).'", '.$result->getPageviews().'],';
      }
      ?>
    ]);

    var chart = new google.visualization.AreaChart(document.getElementById('chart'));
    chart.draw(data, {width: 630, height: 180, title: '<?php echo  $ga_start.' - '. date("Y-m-d", strtotime("0 day", time())); ?>',
                      colors:['#999999','#ff0000'],
                      areaOpacity: 0.1,
                      hAxis: {textPosition: 'in', showTextEvery: 30, slantedText: false, textStyle: { color: '#555555', fontSize: 10 } },
                      pointSize: 5,
                      legend: 'none',
                      chartArea:{left:0,top:30,width:"100%",height:"100%"}
    });

Answer 1

Using date as a dimension in your query is retrieving pageviews per day -- you can use week or month dimensions instead.

See Time - Dimensions & Metrics Reference

Make sure to change both the dimension and the sort parameters, like

$ga->requestReportData(
  $ga_profile_id,
  array('week'),
  array('pageviews'),
  'week', 
  ...