higncharts column设置最低高度/长度示例页面：http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-softwa
higncharts column设置最低高度/长度
示例页面：http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/highcharts/plotoptions/column-minpointlength/