做了一个折线图，线什么都显示正常，但是上边多了两条线，（红色那条（y轴坐标是10）和黄色那条（Y轴坐标是6））不知道是为什么，那两条线不是数据控制的，有谁知道，帮忙解决一下啊。
[img=http://bbs.php100.com/attachment/Mon_1208/18_81595_d610a677e82b7a5.jpg?25][/img]
------最佳解决方案--------------------------------------------------------
你在下面加了
趋势线吧
<chart caption='Business Results 2005 v 2006' xAxisName='Month' yAxisName='Revenue' showValues='0' numberPrefix='$'>
<categories>
<category label='Jan' />
<category label='Feb' />
<category label='Mar' />
<category label='Apr' />
<category label='May' />
<category label='Jun' />
<category label='Jul' />
<category label='Aug' />
<category label='Sep' />
<category label='Oct' />
<category label='Nov' />
<category label='Dec' />
</categories>
<dataset seriesName='2006'>
<set value='27400' />
<set value='29800'/>
<set value='25800' />
<set value='26800' />
<set value='29600' />
<set value='32600' />
<set value='31800' />
<set value='36700' />
<set value='29700' />
<set value='31900' />
<set value='34800' />
<set value='24800' />
</dataset>
<dataset seriesName='2005'>
<set value='10000'/>
<set value='11500'/>
<set value='12500'/>
<set value='15000'/>
<set value='11000' />
<set value='9800' />
<set value='11800' />
<set value='19700' />
<set value='21700' />
<set value='21900' />
<set value='22900' />
<set value='20800' />
</dataset>
<trendlines>
<line startValue='26000' color='91C728' displayValue='Target' showOnTop='1'/>
</trendlines>