what I am trying to achieve is an area chart in highstock, where I have 1 pixel gridlines on both x- and y-axis which should be visible on top of the fill area but should not break the chart line.
Look at this example from the highstock api: http://jsfiddle.net/highcharts/5uZzk/
Is it possible to somehow have those grid lines not break the chart line?
I already tried splitting up my series into two series with different indexes where one would only represent the "area" (e.g. index 3) and the other the "line" (e.g. index 5) so that I could define the gridZIndex to be 4 which should have placed it right in the middle of the series. However that did not seem to work. Either the grid was on top of them all or below them.
I should also point out that a transparent fillColor for the area does not solve my problem because it makes the grid lines less visible.
So, does anyone have an idea how to achieve this?