D3轴开始处的标签

Question

如何让d3在“Wed 21”的左边放置“Tue 20”？

http://jsfiddle.net/robdodson/KWRxW/

var data = [ 
      {"date":"2012-03-20","total":3}, 
      {"date":"2012-03-21","total":8}, 
      {"date":"2012-03-22","total":2}, 
      {"date":"2012-03-23","total":10}, 
      {"date":"2012-03-24","total":3}, 
      {"date":"2012-03-25","total":20}, 
      {"date":"2012-03-26","total":12} 
      ]; 

var margin = {top: 40, right: 40, bottom: 40, left:40}, 
    width = 600, 
    height = 500; 

var x = d3.time.scale() 
    .domain([ 
       new Date(data[0].date), 
       d3.time.day.offset(new Date(data[data.length - 1].date), 1) 
      ]) 
    .rangeRound([0, width - margin.left - margin.right]); 

var y = d3.scale.linear() 
    .domain([0, d3.max(data, function(d) { return d.total; })]) 
    .range([height - margin.top - margin.bottom, 0]); 

var xAxis = d3.svg.axis() 
    .scale(x) 
    .orient('bottom') 
    .ticks(d3.time.days, 1) 
    .tickFormat(d3.time.format('%a %d')) 
    .tickSize(0) 
    .tickPadding(8); 

var yAxis = d3.svg.axis() 
    .scale(y) 
    .orient('left') 
    .tickPadding(8); 

var svg = d3.select('body').append('svg') 
    .attr('class', 'chart') 
    .attr('width', width) 
    .attr('height', height) 
    .append('g') 
    .attr('transform', 'translate(' + margin.left + ', ' + margin.top + ')'); 

svg.selectAll('.chart') 
    .data(data) 
    .enter() 
    .append('rect') 
    .attr('class', 'bar') 
    .attr('x', function(d) { return x(new Date(d.date)); }) 
    .attr('y', function(d) { 
     return height - margin.top - margin.bottom - 
       (height - margin.top - margin.bottom - y(d.total)) 
    }) 
    .attr('width', 10) 
    .attr('height', function(d) { 
     return height - margin.top - margin.bottom - y(d.total) 
    }); 

svg.append('g') 
    .attr('class', 'x axis') 
    .attr('transform', 'translate(0, ' + (height - margin.top - margin.bottom) + ')') 
    .call(xAxis); 

svg.append('g') 
    .attr('class', 'y axis') 
    .call(yAxis); 

Answer 1

它发生是由于日期管理不一致。通过使用UTC日期和d3日期功能，问题不会发生。

https://github.com/mbostock/d3/issues/1234