Question

I want to draw an axis with major and minor ticks that cover my whole page styled differently. I followed structure of this example, but I can't get it to work make different between major and minor ticks lines. Here is a picture represent what I'm looking for:

Adobe Photoshop grid Windows

This is my code:

           // Define identity (1:1) scales
            var x = d3.scale.identity().domain([0, 400]);
            var y = d3.scale.identity().domain([0, 300]);

            // Define container
            var chart = d3.select("body")
                .append("svg")
                .attr("class", "chart")
                .attr("width", 500)
                .attr("height", 400)
                .append("g")
              .attr("transform", "translate(40,20)");

           // Draw X-axis grid lines
            chart.selectAll("line.x")
              .data(x.ticks(50))
              .enter().append("line")
              .attr("class", "minor")
              .attr("x1", x)
              .attr("x2", x)
              .attr("y1", 0)
              .attr("y2", 300)
              .style("stroke", "#ccc");

            // Draw Y-axis grid lines
            chart.selectAll("line.y")
              .data(y.ticks(50))
              .enter().append("line")
              .attr("class", "minor")
              .attr("x1", 0)
              .attr("x2", 400)
              .attr("y1", y)
              .attr("y2", y)
              .style("stroke", "#ccc");

            // Define stock x and y axis
            var xAxis = d3.svg.axis().scale(x).orient('top');
            var yAxis = d3.svg.axis().scale(y).orient('left');

            chart.append('g')
              .attr("class", "axis")
              .call(xAxis);

            chart.append('g')
              .attr("class", "axis")
              .call(yAxis);

In this case I don't know if I missed some thing?

Complete jsfiddle here.

Answer 1

我已经改变了你的小提琴，请看这里http://jsfiddle.net/17ubhxqw/1/

您需要做的就是弄清楚您想要更暗线的间隔，并在x和y网格声明中返回不同的颜色：

// Draw X-axis grid lines
            chart.selectAll("line.x")
              .data(x.ticks(50))
              .enter().append("line")
              .attr("class", "minor")
              .attr("x1", x)
              .attr("x2", x)
              .attr("y1", 0)
              .attr("y2", 300)
            .style("stroke", function(d,i){
                if (d%50 !== 0) {
                    return "#ccc";
                }else {
                    return "#666";
                }
            });

            // Draw Y-axis grid lines
            chart.selectAll("line.y")
              .data(y.ticks(50))
              .enter().append("line")
              .attr("class", "minor")
              .attr("x1", 0)
              .attr("x2", 400)
              .attr("y1", y)
              .attr("y2", y)
              .style("stroke", function(d,i){
                if (d%50 !== 0) {
                    return "#ccc";
                }else {
                    return "#666";
                }
            });

希望这有帮助。

Answer 2

这样做的新方法是拥有多个轴，一个用于主要刻度线，另一个用于次要刻度轴。您可以选择同样出现在次要轴上的刻度线并删除它们。

svg.append("g")
.attr("class", "grid")
.attr("transform", "translate(0," + height + ")")
.call(d3.svg.axis().scale(x).ticks(20).tickSize(-height))
.selectAll(".tick")
.data(x.ticks(10), function(d) { return d; })
.exit()
.classed("minor", true);

svg.append("g")
 .attr("class", "axis")
 .attr("transform", "translate(0," + height + ")")
 .call(d3.svg.axis().scale(x).ticks(10));

更多信息here。

Major and minor ticks with different style, whole page covered D3?

2 个答案: