D3.js 不透明矩形内的文本不可见

D3.js 不透明矩形内的文本不可见,d3.js,svg,D3.js,Svg,在我的d3图中,我有下面的一段。 我想要的是在一个矩形中显示一些文本 var values = $('#<%=hdnDtArray.ClientID%>').val(); var data = JSON.parse(values); margin = { top: 20, right: 60, bottom: 20, left: 100 }; var width = 900, height = 350; var vis = d3.selec

在我的d3图中,我有下面的一段。 我想要的是在一个矩形中显示一些文本

var values = $('#<%=hdnDtArray.ClientID%>').val();
var data = JSON.parse(values);

margin = {
    top: 20,
    right: 60,
    bottom: 20,
    left: 100
};
var width = 900,
    height = 350;

var vis = d3.select("#line_chart").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom);

var parseTime = d3.time.format("%Y.%m.%d").parse;

max_y = 0;
min_y = data[0].close;
var extent = d3.extent(data.map(function(d) {
    return d.date
}));

max_x = extent[1];
min = extent[0];

for (i = 0; i < data.length; i++) {
    max_y = Math.max(max_y, data[i].close);
    min_y = Math.min(min_y, data[i].close);
}

var x = d3.time.scale()
    .rangeRound([margin.left, width]);


xScale = x.domain(d3.extent(data, function(d) {
    return parseTime(d.date);
}));

yScale = d3.scale.linear().range([height - margin.top, margin.bottom]).domain([0, max_y]),

    xAxis = d3.svg.axis()
    .scale(xScale),

    yAxis = d3.svg.axis()
    .scale(yScale)
    .orient("left")
    .innerTickSize(-width + margin.left)
    .outerTickSize(0)
    .tickPadding(10);

vis.append("svg:g")
    .attr("class", "x axis")
    .style({
        'stroke': 'Black',
        'fill': 'none',
        "stroke-width": 1,
        "font-size": "13px"
    })
    .attr("transform", "translate(0," + (height - margin.bottom) + ")")
    .call(xAxis)
    .selectAll("text")
    .attr("transform", "translate(-10,0) rotate(-40)")
    .style("text-anchor", "end");


vis.append("text")
    .attr("class", "x label")
    .attr("text-anchor", "end")
    .attr("x", width + 120)
    .attr("y", height - 10)
    .attr("font-weight", "bold");

vis.append("svg:g")
    .attr("class", "y axis")
    .style({
        'stroke': 'Black',
        'fill': 'none',
        'stroke-width': 1,
        "font-size": "13px"
    })
    .attr("transform", "translate(" + (margin.left) + ",0)")
    .call(yAxis);

vis.append("text")
    .attr("class", "y label")
    .attr("text-anchor", "end")
    .attr("x", margin.left + 5)
    .attr("y", margin.top - 2)
    .attr("font-weight", "bold");

var line = d3.svg.line()
    .x(function(d) {
        return xScale(parseTime(d.date));
    })
    .y(function(d) {
        return yScale(d.close);
    })
    .interpolate("basis");

vis.append('svg:path')
    .datum(data)
    .attr("fill", "none")
    .attr("stroke", "steelblue")
    .attr("stroke-linejoin", "round")
    .attr("stroke-linecap", "round")
    .attr("stroke-width", 1.5)
    .attr("d", line);

var hoverLineGroup = vis.append("g")
    .attr("class", "hover-line");

var hoverLine = hoverLineGroup.append("line")
    .attr("stroke", "#000000")
    .attr("stroke-width", "1px")
    .attr("x1", 10).attr("x2", 10)
    .attr("y1", 20).attr("y2", height - 20);

var hoverTT = hoverLineGroup.append('text')
    .attr("class", "hover-tex capo")
    .attr('dy', "0.35em");

var cle = hoverLineGroup.append("circle")
    .attr("r", 4.5);

var hoverTT2 = hoverLineGroup.append('text')
    .attr("class", "hover-text capo")
    .attr('dy', "0.55em");

hoverLineGroup.style("opacity", 1e-6);

var rectHover = vis.append("rect")
    .data(data)
    .attr("fill", "none")
    .attr("width", width)
    .attr("height", height);

var hoverCircle = hoverLineGroup.append("circle");
var hoverRect = hoverLineGroup
    .append("rect");



vis.on("mouseout", hoverMouseOff)
    .on("mousemove", hoverMouseOn);

var bisectDate = d3.bisector(function(d) {
    return parseTime(d.date);
}).left;

function hoverMouseOn() {

    var mouse_x = d3.mouse(this)[0];
    var mouse_y = d3.mouse(this)[1];
    var graph_y = yScale.invert(mouse_y);
    var graph_x = xScale.invert(mouse_x);

    var mouseDate = xScale.invert(mouse_x);
    var i = bisectDate(data, mouseDate);

    var d0 = data[i - 1]
    var d1 = data[i];

    var d = mouseDate - d0[0] > d1[0] - mouseDate ? d1 : d0;

    hoverRect.attr("class", "y")
        .style("fill", "none")
        .style("stroke", "black")
        .attr('x', mouse_x + 8)
        .attr('y', yScale(d.close) - 20)
        .attr("width", 200)
        .attr("height", 50);


    hoverTT.text("Test Text")
        .attr("opacity", "1");


    hoverTT.attr('x', mouse_x + 23);
    hoverTT.attr('y', yScale(d.close));




    /*
    hoverTT.text("Date: " + d.date);
    hoverTT.attr('x', mouse_x + 23);
    hoverTT.attr('y', yScale(d.close));

    hoverTT2.text("Portfolio Value: " + Math.round(d.close * 100) / 100)
            .attr('x', mouse_x + 23)
            .attr('y', yScale(d.close) + 10);
    */

    hoverLine.attr("x1", mouse_x).attr("x2", mouse_x)
    hoverLineGroup.style({
        'font-weight': 'bold',
        'opacity': 1
    });

    hoverCircle.attr("class", "y")
        .style("fill", "blue")
        .style("stroke", "blue")
        .attr("r", 4)
        .attr('cx', mouse_x)
        .attr('cy', yScale(d.close));


}

function hoverMouseOff() {
    hoverLineGroup.style("opacity", 1e-6);
}
var values=$('#').val();
var data=JSON.parse(值);
保证金={
前20名,
右:60,
底数:20,
左:100
};
可变宽度=900,
高度=350;
var vis=d3。选择(“折线图”)。追加(“svg”)
.attr(“宽度”,宽度+边距。左侧+边距。右侧)
.attr(“高度”,高度+边距。顶部+边距。底部);
var parseTime=d3.time.format(“%Y.%m.%d”).parse;
max_y=0;
min_y=数据[0]。关闭;
var extent=d3.extent(data.map)函数(d){
返回日期
}));
max_x=范围[1];
最小值=范围[0];
对于(i=0;id1[0]-mouseDate?d1:d0;
hoverRect.attr(“类”、“y”)
.style(“填充”、“无”)
.style(“笔划”、“黑色”)
.attr('x',鼠标x+8)
.attr('y',yScale(d.close)-20)
.attr(“宽度”,200)
.attr(“高度”,50);
hoverTT.text(“测试文本”)
.attr(“不透明度”、“1”);
hoverTT.attr('x',鼠标x+23);
hoverTT.attr('y',yScale(d.close));
/*
文本(“日期:+d.Date”);
hoverTT.attr('x',鼠标x+23);
hoverTT.attr('y',yScale(d.close));
hoverTT2.text(“投资组合价值:”+Math.round(d.close*100)/100)
.attr('x',鼠标x+23)
.attr('y',yScale(d.close)+10);
*/
hoverLine.attr(“x1”,鼠标x.attr(“x2”,鼠标x)
hoverLineGroup.style({
“字体大小”:“粗体”,
“不透明度”:1
});
hoverCircle.attr(“类”、“y”)
.style(“填充”、“蓝色”)
.style(“笔划”、“蓝色”)
.attr(“r”,4)
.attr('cx',鼠标x)
.attr('cy',yScale(d.close));
}
函数hoverMouseOff(){
hoverLineGroup.style(“不透明”,1e-6);
}
文本现在不可见。但是如果我将“fill”属性设置为“none”,那么文本将可见

我想要的是背景是不透明的,这就是为什么我把它变成白色。
我仍然希望文本可见。

代码的问题在于选择的顺序

在SVG中,就像真实的画家在真实的画布上使用墨水一样,以后绘制的内容仍保留在顶部。因此,如果希望文本位于矩形顶部(使用所需的任何
fill
),请在矩形的选择之后设置文本的选择

因此,在你的情况下,这

var hoverTT = hoverLineGroup.append('text')
    .attr("class", "hover-tex capo")
    .attr('dy', "0.35em");
。。。在此之后必须

var hoverRect = hoverLineGroup
    .append("rect");
这是一个演示,矩形有一个纯白色填充。查看选择的顺序:

var svg=d3.选择(“svg”);
var hoverRect=svg.append(“rect”)
.attr(“填充”、“白色”)
.attr(“笔划”、“耐火砖”)
.attr(“宽度”,40)
.attr(“高度”,30)