d3時間格式x軸顯示相同的值

我想繪製沿d3.js圖的x軸的日期。不過，我得到的是沿a軸重複的相同值，而應該有不同的值。d3時間格式x軸顯示相同的值

我的格式如下日期：數據呼叫後直接

var format = d3.time.format('%m/%d/%Y %H:%M').parse;

然後：

data.forEach(function(d) { 
    d.timestamp = format(d.timestamp); // d.timestamp is from the data 
});

然後設置域如下：

var xScale = d3.time.scale().range([0, width]); 
xScale.domain([d3.min(data, xValue), d3.max(data, xValue)]); 

timestamp location price FirstName LastName 
1/6/2014 7:28 Brew've Been Served 11.34 Edvard Vann 
1/6/2014 7:34 Hallowed Grounds 52.22 Hideki Cocinaro 
1/6/2014 7:35 Brew've Been Served 8.33 Stenig Fusil 
1/6/2014 7:36 Hallowed Grounds 16.72 Birgitta Frente 
1/6/2014 7:37 Brew've Been Served 4.24 Sven Flecha 
1/6/2014 7:38 Brew've Been Served 4.17 Cornelia Lais 
1/6/2014 7:42 Coffee Cameleon 28.73 Linnea Bergen 
1/6/2014 7:43 Brew've Been Served 9.6 Mat Bramar 
1/6/2014 7:43 Brew've Been Served 16.9 Brand Tempestad 
1/6/2014 7:47 Hallowed Grounds 16.53 Emile Arpa 
1/6/2014 7:48 Hallowed Grounds 10.66 Kare Orilla 
1/6/2014 7:49 Coffee Cameleon 8.39 Bertrand Ovan 
1/6/2014 7:52 Brew've Been Served 32.83 Hennie Osvaldo 
1/6/2014 7:54 Hallowed Grounds 16.88 Nils Calixto 
1/6/2014 7:54 Coffee Cameleon 11.86 Adra Nubarron 
1/6/2014 7:54 Hallowed Grounds 32.93 Rachel Pantanal 
1/6/2014 7:55 Hallowed Grounds 8.05 Lucas Alcazar 
1/6/2014 7:55 Brew've Been Served 3.67 Varja Lagos 
1/6/2014 7:59 Brew've Been Served 8.88 Inga Ferro 
1/6/2014 8:00 Brew've Been Served 4.27 Ruscella Mies Haber 
1/6/2014 8:00 Hallowed Grounds 9.69 Anda Ribera 
1/6/2014 8:01 Hallowed Grounds 10.07 Lidelse Dedos 
1/6/2014 8:06 Brew've Been Served 18.24 Loreto Bodrogi

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