I have a problem regarding opacity(transparency) with highcharts in my case bubble chart and i think i can explain it best with an example
Example: i have a series with 100 bubbles that cover each other in the chart and the opacity is set to 1% (0.01). My problem here is shouldn't all the bubbles that are over each other have an opacity of 100% (1) or is my knowlage of how opacity works wrong?
$(function () {
$('#container').highcharts({
chart:{
type:'bubble'
},
series: [{
name: '1',
data: [{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},
{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1},{x:1,y:1}
],
marker:{
fillOpacity:0.01,
lineWidth:0,
fillColor:'#000000'
}
}]
});
});
fidle: http://jsfiddle.net/kte3omhg/1/
And if there is a work around this problem i would appreciate it if someone posts it
Edit: Okey i found out that opacity doesn't work as i thought it would
Total Opacity = First Opacity + (100 - First Opacity) * Second Opacity
= 0.7 + (1 - 0.7) * 0.7
= 0.7 + (0.3) * 0.7
= 0.7 + 0.21
= 0.91
http://en.wikipedia.org/wiki/Mathematical_descriptions_of_opacity
But i would still like to know if there is a solution to getting my result