time series - d3.js and nvd3.js how to show graph for number of clicks on a website -

i want give user flexibility choose datetime range , see graph of number clicks during period. range 1 year, 6 month, 1 month, 1 week , 1 day or last 6 hours... @ point of time there 1 click. so, dataset :

time                           click 2012-01-01 01:00:00             1 2012-01-01 02:00:00             1 2012-01-01 03:10:00             1 2012-01-01 03:20:01             1 2012-06-02 11:00:00             1 2012-12-01 01:00:00             1 2013-05-01 12:00:00             1     

the graph should able adjust it's x-axis per data available it. example if checking days data should show hh:00 range , if looking week data should mon-tue-wed range.

my sample code looks this:

 `chart.xaxis.showmaxmin(false).tickformat(function(d) { return d3.time.format('%x')(new date(d)) });   chart.yaxis.tickformat(d3.format(',.2f'));   d3.select('#chart1 svg')     .datum(jsondata)       .call(chart);` 

how handle aggregation of data point? have provide data set aggregation or chart can providing function.

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update

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i tried rollup , found gives aggregation data now.

rollup = d3.nest().key(function(d) {           return (new date(+d[0])).getmonth();        }).rollup(function(d) {         return d3.sum(d, function(e) { return +e[1]; });       }).entries(jsondatavalues)     .map(function(d) {data.push([d.key,d.values])}); 

it aggregates data on basis of month. needs modified more flexible adjusted given range (may domain friend here ?)