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Javascript 无法生成网格线_Javascript_Html_Svg_D3.js_Charts - Fatal编程技术网

Javascript 无法生成网格线

Javascript 无法生成网格线,javascript,html,svg,d3.js,charts,Javascript,Html,Svg,D3.js,Charts,我一直在尝试在我的图表中获得网格线,我一直在学习d3noob的d3技巧和技巧。如果我的代码错误,请帮助我 风格 body { font: 12px Arial; } path { stroke: steelblue; stroke-width: 2; fill: none; } .axis path, .axis line { fill: none; stroke: grey; stroke-width: 1; shape-rend

我一直在尝试在我的图表中获得网格线,我一直在学习d3noob的d3技巧和技巧。如果我的代码错误,请帮助我

风格

body {
    font: 12px Arial;
}
path {
    stroke: steelblue;
    stroke-width: 2;
    fill: none;
}
.axis path, .axis line {
    fill: none;
    stroke: grey;
    stroke-width: 1;
    shape-rendering: crispEdges;
}
.grid.tick {
    stroke: lightgrey;
    opacity: 0.7;
}
.grid path {
    stroke-width: 0;
}
<body>
    <!-- load the d3.js library -->
    <script src="d3.v3.min.js"></script>
    <script>
        // Set the dimensions of the canvas / graph
        Var margin = {
            top: 30,
            right: 20,
            bottom: 30,
            left: 50
        },
        width = 400 - margin.left - margin.right,
        height = 200 - margin.top - margin.bottom;

        // Parse the date / time
        var parseDate = d3.time.format("%d-%b-%y").parse;

        // Set the ranges
        var x = d3.time.scale().range([0, width]);
        var y = d3.scale.linear().range([height, 0]);

        // Define the axes
        var xAxis = d3.svg.axis().scale(x)
            .orient("bottom").ticks(5);

        var yAxis = d3.svg.axis().scale(y)
            .orient("left").ticks(5);

        // Define the line
        var valueline = d3.svg.line()
            .interpolate("bundle")
            .x(function(d) {
            return x(d.date);
        })
            .y(function(d) {
            return y(d.close);
        });

        // Adds the svg canvas
        var svg = d3.select("body")
            .append("svg")
            .attr("width", width + margin.left + margin.right)
            .attr("height", height + margin.top + margin.bottom)
            .append("g")
            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

        function make_x_axis() {
            return d3.svg.axis()
                .scale(x)
                .orient("bottom")
                .ticks(5)
        }

        function make_y_axis() {
            return d3.svg.axis()
                .scale(y)
                .orient("left")
                .ticks(5)
        }


        // Get the data
        d3.csv("data.csv", function(error, data) {
            data.forEach(function(d) {
                d.date = parseDate(d.date);
                d.close = +d.close;
            });

            // Scale the range of the data
            x.domain(d3.extent(data, function(d) {
                return d.date;
            }));
            y.domain([0, d3.max(data, function(d) {
                return d.close;
            })]);

            // Add the valueline path.
            svg.append("path")
                .attr("class", "line")
                .attr("d", valueline(data));

            // Add the X Axis
            svg.append("g")
                .attr("class", "x axis")
                .attr("transform", "translate(0," + height + ")")
                .call(xAxis);


            svg.append("text") // text label for the x axis
            .attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom) + ")")
                .style("text-anchor", "middle")
                .text("Date");


            // Add the Y Axis
            svg.append("g")
                .attr("class", "y axis")
                .call(yAxis);

            svg.append("text")
                .attr("x", (width / 2))
                .attr("y", 0 - (margin.top / 2))
                .attr("text-anchor", "middle")
                .style("font-size", "16px")
                .style("text-decoration", "underline")
                .text("Value vs Date Graph");

            svg.append("g")
                .attr("class", "grid")
                .attr("transform", "translate(0," + height + ")")
                .call(make_x_axis()
                .tickSize(-height, 0, 0)
                .tickFormat(""))

            svg.append("g")
                .attr("class", "grid")
                .call(make_y_axis()
                .tickSize(-width, 0, 0)
                .tickFormat(""))

        });
    </script>
</body>
代码

body {
    font: 12px Arial;
}
path {
    stroke: steelblue;
    stroke-width: 2;
    fill: none;
}
.axis path, .axis line {
    fill: none;
    stroke: grey;
    stroke-width: 1;
    shape-rendering: crispEdges;
}
.grid.tick {
    stroke: lightgrey;
    opacity: 0.7;
}
.grid path {
    stroke-width: 0;
}
<body>
    <!-- load the d3.js library -->
    <script src="d3.v3.min.js"></script>
    <script>
        // Set the dimensions of the canvas / graph
        Var margin = {
            top: 30,
            right: 20,
            bottom: 30,
            left: 50
        },
        width = 400 - margin.left - margin.right,
        height = 200 - margin.top - margin.bottom;

        // Parse the date / time
        var parseDate = d3.time.format("%d-%b-%y").parse;

        // Set the ranges
        var x = d3.time.scale().range([0, width]);
        var y = d3.scale.linear().range([height, 0]);

        // Define the axes
        var xAxis = d3.svg.axis().scale(x)
            .orient("bottom").ticks(5);

        var yAxis = d3.svg.axis().scale(y)
            .orient("left").ticks(5);

        // Define the line
        var valueline = d3.svg.line()
            .interpolate("bundle")
            .x(function(d) {
            return x(d.date);
        })
            .y(function(d) {
            return y(d.close);
        });

        // Adds the svg canvas
        var svg = d3.select("body")
            .append("svg")
            .attr("width", width + margin.left + margin.right)
            .attr("height", height + margin.top + margin.bottom)
            .append("g")
            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

        function make_x_axis() {
            return d3.svg.axis()
                .scale(x)
                .orient("bottom")
                .ticks(5)
        }

        function make_y_axis() {
            return d3.svg.axis()
                .scale(y)
                .orient("left")
                .ticks(5)
        }


        // Get the data
        d3.csv("data.csv", function(error, data) {
            data.forEach(function(d) {
                d.date = parseDate(d.date);
                d.close = +d.close;
            });

            // Scale the range of the data
            x.domain(d3.extent(data, function(d) {
                return d.date;
            }));
            y.domain([0, d3.max(data, function(d) {
                return d.close;
            })]);

            // Add the valueline path.
            svg.append("path")
                .attr("class", "line")
                .attr("d", valueline(data));

            // Add the X Axis
            svg.append("g")
                .attr("class", "x axis")
                .attr("transform", "translate(0," + height + ")")
                .call(xAxis);


            svg.append("text") // text label for the x axis
            .attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom) + ")")
                .style("text-anchor", "middle")
                .text("Date");


            // Add the Y Axis
            svg.append("g")
                .attr("class", "y axis")
                .call(yAxis);

            svg.append("text")
                .attr("x", (width / 2))
                .attr("y", 0 - (margin.top / 2))
                .attr("text-anchor", "middle")
                .style("font-size", "16px")
                .style("text-decoration", "underline")
                .text("Value vs Date Graph");

            svg.append("g")
                .attr("class", "grid")
                .attr("transform", "translate(0," + height + ")")
                .call(make_x_axis()
                .tickSize(-height, 0, 0)
                .tickFormat(""))

            svg.append("g")
                .attr("class", "grid")
                .call(make_y_axis()
                .tickSize(-width, 0, 0)
                .tickFormat(""))

        });
    </script>
</body>

问题可能是由第一行代码引起的,其中var显示为var。看看这是否有帮助

Var margin = {
            top: 30,
            right: 20,
            bottom: 30,
            left: 50
        },

您的CSS中缺少一个空格:

.grid.tick {
    stroke: lightgrey;
    opacity: 0.7;
}
应该是

.grid .tick {
    stroke: lightgrey;
    opacity: 0.7;
}
或者如果你想更精确一些

g.grid g.tick line {
    stroke: lightgrey;
    opacity: 0.7;
}

axis函数使用类“tick”创建
元素。您正在类为“grid”的
元素中绘制这些元素。但是,如果没有空格,CSS选择器
.grid.tick
仅在两个类位于同一元素上时才适用。

您在哪里声明了“d3”?。您的代码在“var parseDate=d3.time.format(“%d-%b-%y”).parse;”处抛出错误。d3未定义我可以得到图表,但不能得到网格线。你在做什么与你正在进行的教程不同?在教程中,它是一个线图。我想生成散点图。但我试图一步一步地获得与教程中类似的图形,但使用网格线代码我没有得到网格线。我仍然没有得到网格线扫描。您试图将一个简化的工作示例(在[JS Fiddle](Fiddle.jshell.net)或类似的东西上)放在一起演示问题?可能还有其他简单的事情在进行……将代码复制到JSFIDLE中,使用my和@FrancisHemsher的打字错误更正(和硬编码数据)可以很好地工作:您确定您的控制台上没有任何运行时错误吗?谢谢您AmeliaBR。现在开始工作了。你能帮我用这个图表画一幅图像吗?我不明白你说的“把图像画到图表上”是什么意思。如果你真的被一些新的东西困住了,那就单独提出一个问题,让很多人都能看到。