## Single Series Chart XML
In this section, the XML structure of single series chart has been explained in a generic way. Let's recall our previous XML. It looked something like this (minus a few new nodes):
<chart caption='Monthly Sales Summary' subcaption='For the year 2006' xAxisName='Month' yAxisName='Sales' numberPrefix='$'> <set label='January' value='17400' /> <set label='February' value='19800' /> <set label='March' value='21800' /> <set label='April' value='23800' /> <set label='May' value='29600' /> <set label='June' value='27600' /> <vLine color='FF5904' thickness='2'/> <set label='July' value='31800' /> <set label='August' value='39700' /> <set label='September' value='37800' /> <set label='October' value='21900' /> <set label='November' value='32900' /> <set label='December' value='39800' /> <trendlines> <line startValue='22000' color='00cc00' displayValue='Average' /> </trendlines> <styles> <definition> <style name='CanvasAnim' type='animation' param='_xScale' start='0' duration='1' /> </definition> <application> <apply toObject='Canvas' styles='CanvasAnim' /> </application> </styles> </chart>
Brief Explanation
The <chart> element is the main element of any FusionCharts XML document - it represents the starting point and the ending point of data. The <chart> element has a number of attributes which helps to manipulate the chart. You can find the list of all the attribute for this element in "Chart XML Sheet" of each chart. In the most general form, attributes have the following form: attributeName = "Value" e.g., xAxisName="Month" The attributes can occur in any order and quotes can be single or double like xAxisName='Month'. However, you need to make sure that a particular attribute occurs only once for a given element. Moving on, each <set> element (which is a child element of the <chart> element) represents a set of data which is to be plotted on the graph and determines a set of data which would appear on the graph. A typical <set> element would look like: <set label="Jan" value="17400" color="3300FF" toolTip="January, 17400" link="details.asp?month=jan" showName="1"/> Between <set> elements, we can have <vLine> element, which indicate vertical separator lines running along the height/width of the chart canvas. <vLine color='FF5904' thickness='2'/> Next we have the <trendLines> element. Using this function of the chart, you could draw custom lines on the chart to represent a trend. For example, in our above XML, we have defined a line at 22000 to represent the average sales for the period. Finally, you've <styles> element which is new in FusionCharts v3. It helps you apply font, effects and animations to various objects of the chart. Styles lends a simple mechanism using which you can easily control the visual layout of charts. To read more on Styles, please see "FusionCharts v3 STYLES" section.