Configuring your Chart using Java

FusionCharts Suite XT includes advanced features that let you add more context to your chart and makes data visualization simpler. These features include updating chart data, annotations, trend-lines, and events.

This article focuses on how you can configure your charts using FusionCharts JSP wrapper to perform the following:

Update Chart Data

A chart, configured to update data values dynamically, is shown below:

FusionCharts will load here..
{
    "chart": {
        "caption": "Customer Satisfaction Score",
        "subcaption": "Los Angeles Topanga",
        "plotToolText": "Current Score: $value",
        "theme": "fusion",
        "chartBottomMargin": "50",
        "showValue": "1"
    },
    "colorRange": {
        "color": [
            {
                "minValue": "0",
                "maxValue": "90",
                "code": "#e44a00"
            },
            {
                "minValue": "90",
                "maxValue": "150",
                "code": "#f8bd19"
            },
            {
                "minValue": "150",
                "maxValue": "250",
                "code": "#6baa01"
            }
        ]
    },
    "dials": {
        "dial": [
            {
                "value": "70",
                "id": "dial1"
            }
        ]
    }
}

The full code for the above sample is given below:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    <%@page import="fusioncharts.FusionCharts" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/fusioncharts.js"></script>
<script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/themes/fusioncharts.theme.fusion.js"></script>
 <title>FusionCharts | update dial value on runtime</title>
</head>
<body style="font-family: Helvetica Neue, Arial; font-size: 16px;">
   <script>
       updateData = function () {
           var value = document.getElementById("dial-val").value;
           FusionCharts("angular_gauge").setDataForId("dial1",value);
       }
   </script>
   <h3>update dial value on runtime</h3>
   <label for="dial-val">Input dial value</label>
        <input name="dial-val" id="dial-val" type= "number"/><input type ="button" name ="update dial" value ="update dial" onclick ="updateData()" />
        <br />
        <br />
    <div id ="gauge"></div>
    <div>
            <p id="plotclick"></p>
        </div>
        <div><span><a href="../Index.jsp">Go Back</a></span></div>
    <%
        String jsonData;
        jsonData = "{ 'chart': { 'caption': 'Customer Satisfaction Score', 'subcaption': 'Los Angeles Topanga', 'plotToolText': 'Current Score: $value', 'theme': 'fint', 'chartBottomMargin': '50', 'showValue': '1' }, 'colorRange': { 'color': [{ 'minValue': '0', 'maxValue': '45', 'code': '#e44a00' }, { 'minValue': '45', 'maxValue': '75', 'code': '#f8bd19' }, { 'minValue': '75', 'maxValue': '100', 'code': '#6baa01' }] }, 'dials': { 'dial': [{ 'value': '70', 'id': 'dial1' }] } }";
        FusionCharts angulargauge = new FusionCharts(
              "angulargauge",
              "angular_gauge",
              "700", 
              "400",
              "gauge",
              "json",
              jsonData                    
        );   

    %>
    <%=angulargauge.render()%>
</body>
</html>

The sample code provided above corresponds to the following tasks:

  1. Import and resolve the dependency fusioncharts.FusionCharts

  2. Include the necessary libraries and components using <script> tags. For example, fusioncharts.js, fusioncharts.theme.fusion.js.

  3. Within the <body>:

    • Include a <script> tag that contains the updateData() function.

    • Include a <label> and an <input> for the new dial value, and whose onClick event executes updateData() when triggered.

    • Include a <div> tag with id same as the value of the renderAt attribute of the instance of FusionCharts (explained in the next step), within which the chart will be rendered.

    • Include a <% %> tag, where:

      • Declare a string jsonData and use it to assign the chart configuration as a JSON string.

      • Create a new instance named angulargauge of the FusionCharts constructor, and pass the values of its arguments:

        • Set the chart type as angulargauge. Find the complete list of chart types with their respective alias here.

        • Set the id as angular_gauge.

        • Set the width and height of the chart in pixels. You can also provide them as percentages.

        • Set the renderAt as gauge.

        • Set the dataFormat as json.

        • Set the dataSource to jsonData which has been declared and defined above.

    • Include a <%= %> tag that contains angulargauge.render().

Refer to Angular Gauge for more information on the configuration and data for this chart type.

Update Chart Attributes

A chart configured to update the chart caption, sub-caption alignment, and chart background dynamically is shown below.

FusionCharts will load here..
{
    "chart": {
        "caption": "Countries With Most Oil Reserves [2017-18]",
        "subCaption": "In MMbbl = One Million barrels",
        "xAxisName": "Country",
        "yAxisName": "Reserves (MMbbl)",
        "numberSuffix": "K",
        "theme": "fusion"
    },
    "data": [
        {
            "label": "Venezuela",
            "value": "290"
        },
        {
            "label": "Saudi",
            "value": "260"
        },
        {
            "label": "Canada",
            "value": "180"
        },
        {
            "label": "Iran",
            "value": "140"
        },
        {
            "label": "Russia",
            "value": "115"
        },
        {
            "label": "UAE",
            "value": "100"
        },
        {
            "label": "US",
            "value": "30"
        },
        {
            "label": "China",
            "value": "30"
        }
    ]
}

The full code for the above sample is given below:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    <%@page import="fusioncharts.FusionCharts" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/fusioncharts.js"></script>
<script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/themes/fusioncharts.theme.fusion.js"></script>
 <title>FusionCharts | Change chart properties dynamically</title>
  <style>
    input[type=radio], input[type=checkbox] {
        display:none;
    }
    input[type=radio] + label, input[type=checkbox] + label {
        display:inline-block;
        margin:-2px;
        padding: 4px 12px;
        margin-bottom: 0;
        font-size: 14px;
        line-height: 20px;
        color: #333;
        text-align: center;
        text-shadow: 0 1px 1px rgba(255,255,255,0.75);
        vertical-align: middle;
        cursor: pointer;
        background-color: #f5f5f5;
        background-image: -moz-linear-gradient(top,#fff,#e6e6e6);
        background-image: -webkit-gradient(linear,0 0,0 100%,from(#fff),to(#e6e6e6));
        background-image: -webkit-linear-gradient(top,#fff,#e6e6e6);
        background-image: -o-linear-gradient(top,#fff,#e6e6e6);
        background-image: linear-gradient(to bottom,#fff,#e6e6e6);
        background-repeat: repeat-x;
        border: 1px solid #ccc;
        border-color: #e6e6e6 #e6e6e6 #bfbfbf;
        border-color: rgba(0,0,0,0.1) rgba(0,0,0,0.1) rgba(0,0,0,0.25);
        border-bottom-color: #b3b3b3;
        filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff',endColorstr='#ffe6e6e6',GradientType=0);
        filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
        -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
        -moz-box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
        box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
    }
     input[type=radio]:checked + label, input[type=checkbox]:checked + label{
           background-image: none;
        outline: 0;
        -webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,0.15),0 1px 2px rgba(0,0,0,0.05);
        -moz-box-shadow: inset 0 2px 4px rgba(0,0,0,0.15),0 1px 2px rgba(0,0,0,0.05);
        box-shadow: inset 0 2px 4px rgba(0,0,0,0.15),0 1px 2px rgba(0,0,0,0.05);
            background-color:#e0e0e0;
    }
    </style>
</head>
<body style = "font-family: Helvetica Neue, Arial; font-size: 16px;">
    <script>
        changeBackground = function(){
            FusionCharts("column_chart").setChartAttribute('bgColor', '#efefef');
        };
        changeCaption = function(){
           FusionCharts("column_chart").setChartAttribute('captionAlignment', 'left');
        };
        reset = function(){
            FusionCharts("column_chart").setChartAttribute('captionAlignment', 'center');
            FusionCharts("column_chart").setChartAttribute('bgColor', '#ffffff');
        };
    </script>
   <h3>Change chart properties dynamically</h3>
    <div id ="chart"></div>
   <div>
            <p align="center" id ="message"></p>
        </div>

        <div id="controllers" align="center" style="font-family:'Helvetica Neue', Arial; font-size: 14px;">
            <input type="button" class="button" onClick="changeBackground()" value='Change Chart Background'/>
            <input type="button" class="button" onClick="changeCaption()" value='Make Caption Text Left Aligned'/>
            <input type="button" class="button" onClick="reset()" value='Reset Attributes'/>
        </div> 
        <div><span><a href="../Index.jsp">Go Back</a></span></div>
    <%
        String jsonData;
        jsonData = "{      'chart': {        'caption': 'Countries With Most Oil Reserves [2017-18]',        'subCaption': 'In MMbbl = One Million barrels',        'xAxisName': 'Country',        'yAxisName': 'Reserves (MMbbl)',        'numberSuffix': 'K',        'theme': 'fusion',  },      'data': [{        'label': 'Venezuela',        'value': '290'      }, {        'label': 'Saudi',        'value': '260'      }, {        'label': 'Canada',        'value': '180'      }, {        'label': 'Iran',        'value': '140'      }, {        'label': 'Russia',        'value': '115'      }, {        'label': 'UAE',        'value': '100'      }, {        'label': 'US',        'value': '30'      }, {        'label': 'China',        'value': '30'      }]    }";
        FusionCharts column_chart = new FusionCharts(
              "column2d",
              "column_chart",
              "700", 
              "400",
              "chart",
              "json",
              jsonData                    
                );


    %>
    <%=column_chart.render()%>
</body>
</html>

The sample code provided above corresponds to the following tasks:

  1. Import and resolve the dependency fusioncharts.FusionCharts

  2. Include the necessary libraries and components using <script> tags. For example, fusioncharts.js, fusioncharts.theme.fusion.js.

  3. Within a <style> tag, define some inline CSS at the page level to make things look good.

  4. Within the <body>:

    • Include a <script> tag that contains functions like updateBackground(), changeCaption(), and reset().

    • Include <input> tags for updating chart background, changing caption, and resetting to original attribute values. The onClick events of these inputs should be associated with their respective functions defined in the above step.

    • Include a <div> tag with id same as the value of the renderAt attribute of the instance of FusionCharts (explained in the next step), within which the chart will be rendered.

    • Include a <% %> tag, where:

      • Declare a string jsonData and use it to assign the chart configuration as a JSON string.

      • Create a new instance named column_chart of the FusionCharts constructor, and pass the values of its arguments:

        • Set the chart type as column2d. Find the complete list of chart types with their respective alias here.

        • Set the id as column_chart.

        • Set the width and height of the chart in pixels. You can also provide them as percentages.

        • Set the renderAt as chart.

        • Set the dataFormat as json.

        • Set the dataSource to jsonData which has been declared and defined above.

    • Include a <%= %> tag that contains column_chart.render().

Refer to Column 2D chart for more information on the configuration and data for this chart type.

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