如何通过单击按钮

时间:2019-05-14 10:39:46

标签: javascript csv d3.js

我看过这个漂亮的d3仪表板。我想知道是否可以通过单击按钮将csv文件切换到另一个文件。

那有可能吗?

这是仪表板的链接:

http://bl.ocks.org/farazshuja/4a582fdeaa1f46f885ffa1776346fdec

要解析csv文件的部分,需要通过单击按钮将其更改为“ data2.csv”。

<script>
var freqData;
d3.csv("data.csv", function(data) {
   freqData = data.map(function(d) { return {
        State: d.State, 
        freq: {
            low: +d.low,
            mid: +d.mid,
            high: +d.high
        }}
    });
  dashboard('#dashboard',freqData);
});


</script>

我想像以下示例一样切换csv文件:http://bl.ocks.org/enjalot/1525346

<script>
var prices_csv = function()
{
    var parse = d3.time.format("%m/%d/%Y").parse;
    d3.csv("prices.csv", function(prices)
    {
        //prices is an array of json objects containing the data in from the csv
        console.log("prices:", prices)
        data = prices.map(function(d)
        {
            //each d is one line of the csv file represented as a json object
            console.log("d", d)
            month = parse(d.month).getMonth();
            console.log("month:", d.month, month)
            //we slice the dollar sign off then convert to a number with the + sign
            //slicing works like "$216".slice(1) gives you 216, 
            //you can also give it a range like "$216 asdf".slice(1,4) gives you 216
            p = d.price
            price = +p.slice(1)
            console.log("price:", p, price);
            return {"month": month, "value":price} ;
        })
        console.log("data", data)
        bars(data);
    })
}
</script>

我尝试像示例中那样对其进行调整,但到目前为止没有成功。我是javascript和d3.js的纯粹初学者,因此我希望有人可以帮助我解决这个问题。

更新:

第一部分(通过按钮更改数据文件(csv))似乎运行良好。 但是,还有另一个挑战。结构如下:有一个div,其中包含各种仪表板。仪表板加载有“对象”作为外部文件。通过使用带有两个按钮“ 2018”和“ 2019”的树菜单,我希望根据选择的年份,在仪表板上显示data1“ d1”或data2“ d2”。

这是2018年加载div“ sales1”的第一个菜单按钮。 “ sales1”通过对象加载各种外部html文件。在那里,仅应加载“ d1”(来自仪表板文件的2018年数据):

<li><a href="#" type="#sales1" id="buttonsales1">units FTP</a></li>

<script>
$(document).ready(function(){
    $("#buttonsales1").click(function(){
        $("#sales1").toggle();
        $("#startscreen").hide();
        $("#sales2").hide();
    });
});
</script>

在2018年的第一个菜单按钮下面,应该有2019年的第二个菜单按钮。单击时,它会加载相同的div“ sales1”,但这次外部仪表板文件显示data2“ d2”(2019年的数据)。

这是通过对象加载仪表板的div“ sales1”:

<div id="sales1">   

    <div id="left">

        <div class="label" data-toggle="toggle" data-target="#sales1desbox2">
        <h2>units sold sales region center</h2>
        <p>by months and sales rep.</p>
        </div>

            <!-- START: Label description. -->
            <div id="sales1desbox2" class="togglebox">
                <div class="description">
                by month and sales region.
                </div>
            </div>
            <!-- END: Label description. -->
    <!-- This is the first dashboard -->        
    <object class="ltrl" type="text/html" data="sales/1/dashboard_center_sales.html">
    </object>
    </div>

    <div id="right">

        <div class="label" data-toggle="toggle" data-target="#sales1desbox3">
        <h2>units sold sales region east</h2>
        <p>by months and sales rep.</p>
        </div>

            <!-- START: Label description. -->
            <div id="sales1desbox3" class="togglebox">
                <div class="description">
                by month and sales region.
                </div>
            </div>
            <!-- END: Label description. -->
    <!-- This is the second dashboard -->       
    <object class="ltrl" type="text/html" data="sales/1/dashboard_east_sales.html">
    </object>
    </div>

</div>
<!-- END: div "sales1" -->

调整后的仪表板现在看起来像这样:

<style>
....
....
....
</style>
<body>
<!-- here are the buttons to control the two csv data sets.  -->

  <button id="d1">Data 1</button><button id="d2">Data 2</button><br />

  <div id='dashboard'>
</div>
<script src="http://d3js.org/d3.v3.min.js"></script>
 <script>
    // here are the event listeners to control the buttons
    d3.select("#d1").on("click", function(d, i) {
      data1();
    });
    d3.select("#d2").on("click", function(d, i) {
      data2();
    });
    function dashboard(id, fData) {
      var barColor = "steelblue";

.... rest相同,直到从两个不同的csv解析数据的部分为止:

<!-- Here the data data1 (d1) for 2018 -->

<script>
var freqData;
function data1() {
  clearDashboard();
  d3.csv("data.csv", function(data) {
    filteredData = data.filter(function(row) {
        return row['KPI'] == 'A';
    });
    freqData = filteredData.map(function(d) { 
        return {
            Month: d.Month, 
            freq: {
                S40411: +d.S40411,
                S40412: +d.S40412,
                S40413: +d.S40413,
                S40414: +d.S40414
            }
        };
    });
    dashboard('#dashboard',freqData);
});
}
    // calls the data1 onload
    data1();
    //clears the dashboard used in data1 and data2
    function clearDashboard() {
      var myNode = document.getElementById("dashboard");
      while (myNode.firstChild) {
        myNode.removeChild(myNode.firstChild);
      }
    }

    <!-- Here the data data2 (d2) for 2019 -->

    function data2() {
  clearDashboard();
  d3.csv("data2.csv", function(data) {
    filteredData = data.filter(function(row) {
        return row['KPI'] == 'A';
    });
    freqData = filteredData.map(function(d) { 
        return {
            Month: d.Month, 
            freq: {
                S40411: +d.S40411,
                S40412: +d.S40412,
                S40413: +d.S40413,
                S40414: +d.S40414
            }
        };
    });
    dashboard('#dashboard',freqData);
});
}
</script>

</body>

为了使其更直观,我创建了一个小的grafic

更新2:

有一个带有按钮的菜单用于2018年和2019年。 看起来像这样:

2018年     FTP单位 2019年     FTP单位

两者的数据结构相同,但数据不同。因此,外部仪表板文件中现在有两个不同的函数:函数data1()和函数data2(),每个都引用不同的csv文件(2018、2019)。

第一个按钮“ 2018,FTP单位”将div称为“ sales1”:

<li><a href="#" type="#sales1" id="buttonsales1">units FTP</a></li>

第二个按钮的功能相同,但适用于2019年。那么区别在哪里?

Div“ sales1”包含各种嵌入有对象标签的仪表板:

<div id="sales1">
<object class="ltrl" type="text/html" data="sales/0/dashboard_east_sales.html"></object>
…
…
…
</div>

我希望第二个按钮使用相同的仪表板调用相同的div“ sales1”,而不是默认情况下不选择“ function data1()”,而应在仪表板(dashboard_east_sales.html)中调用“ function data2()”。

更新3:

我制作了Codepen来确切显示我要实现的目标:

这是index.html,其中dahboard通过object标签嵌入: https://codepen.io/robx360/pen/wbpoQM

这是仪表板文件本身: https://codepen.io/robx360/pen/pmpNWN

如您所见,索引文件中的按钮应触发数据集的更改。到目前为止,按钮位于仪表板文件内。那就是我想要改变的地方。

更新4:

<!–– those buttons shall have the functionality of the buttons within the dashboard file that is embedded with object tag ––>
<li><a href="#" type="#sales1" id="buttonsales1">units FTP 2018</a></li>
<li><a href="#" type="#sales1" id="buttonsales1">units FTP 2019</a></li>


<!-- This part is currently located in the external Dashboard file (dashboard.html) -->

<!-- here are the buttons to control the two csv data sets -->
  <button id="d1">Data 1 (should be units FTP 2018)</button>
  <button id="d2">Data 2 (should be units FTP 2019)</button>


<!–– The event listeners must point to the object tag ID "dashboard1", how? ––>

 <script>
    // here are the event listeners to control the buttons
    d3.select("#d1").on("click", function(d, i) {
      data1();
    });
    d3.select("#d2").on("click", function(d, i) {
      data2();
    });

</script>   

    <div id="sales1">   

    <div id="right">

    <object id="dashboard1" style="width:900px; height:600px; type="text/html" data="dashboard.html">
    </object>
    </div>

</div>

1 个答案:

答案 0 :(得分:3)

当然可以:)您可以将两个按钮(如第二个示例中所示)添加到第一个示例中的代码中。我假设csv文件相似并且图形相同,只是数据会有所不同。如果您希望拥有不同的图表,则可以添加更多逻辑。我已经为您入门提供了一个例子。

...styles

<body>

  <!-- here are the buttons to control the two csv data sets -->
  <button id="d1">Data 1</button><button id="d2">Data 2</button><br />

  <div id="dashboard"></div>
  <script src="http://d3js.org/d3.v3.min.js"></script>

  <script>
    // here are the event listeners to control the buttons
    d3.select("#d1").on("click", function(d, i) {
      data1();
    });
    d3.select("#d2").on("click", function(d, i) {
      data2();
    });
    function dashboard(id, fData) {
      var barColor = "steelblue";

....continue with all of the code from the first example....

用这两个函数替换结束脚本以控制两个csv文件的加载,并清除从前一个csv创建的节点。

<script>
    var freqData;
    function data1() {
      clearDashboard();
      d3.csv("data.csv", function(data) {
        freqData = data.map(function(d) {
          return {
            State: d.State,
            freq: {
              low: +d.low,
              mid: +d.mid,
              high: +d.high
            }
          };
        });
        dashboard("#dashboard", freqData);
      });
    }
    // calls the data1 onload
    data1();
    //clears the dashboard used in data1 and data2
    function clearDashboard() {
      var myNode = document.getElementById("dashboard");
      while (myNode.firstChild) {
        myNode.removeChild(myNode.firstChild);
      }
    }
    function data2() {
      clearDashboard();
      d3.csv("./data2.csv", function(data) {
        freqData = data.map(function(d) {
          return {
            State: d.State,
            freq: {
              low: +d.low,
              mid: +d.mid,
              high: +d.high
            }
          };
        });
        dashboard("#dashboard", freqData);
      });
    }
  </script>
</body>

编辑:

要拥有两个仪表板,请将仪表板重命名为dashboard1,然后添加另一个名为dashboard2的

<div id="dashboard1"></div>
<div id="dashboard2"></div>

然后在data1和data2函数中将这些div作为目标

...

dashboard("#dashboard1", freqData); 
...

dashboard("#dashboard2", freqData);

编辑clearDashboard函数以接受一个参数,该参数将确定要清除的div

function clearDashboard(dashboard) {
      var myNode = document.getElementById(dashboard);
      while (myNode.firstChild) {
        myNode.removeChild(myNode.firstChild);
      }
    }

并将该函数的参数设置为div以清除

...

clearDashboard("dashboard1");
...

clearDashboard("dashboard2");