I'm assuming you're using the "mixed" chart type and setting the "type" value within each object in the "series" array, correct? The order in which they are placed in the "series" array affects the order in which each series is drawn. If the line series appears before the bar series, the line series will be drawn first and the bar series will be drawn on top of the line series.
series : [
{
values : [35,42,67,89,25,34,67,85],
type: "bar"
},
{
values : [35,42,67,89,25,34,67,85],
type: "line",
marker:{
size:10
}
}
]
Z-index Property
series: [
{
values: [35,42,67,89,25,34,67,85],
zIndex: 0
},
{
values: [85,35,42,67,89,25,34,67],
zIndex: 1,
},
{
values: [67,85,35,42,67,89,25,34],
zIndex: 2
}
]
You can also use the z-index property to layer the series.