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Bubble Size Calculation weirdness


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 My current understanding of bubble size calculation in an X-Y bubble chart is based on this document: http://support.softwarefx.com/ShowArticle.aspx?Type=KB&Source=http://support.softwarefx.com/kb/706/1/001.htm&Product=CfxFE, except that I can't seem to set volume greater than 100, ie.

[(Value-Min)/(Max-Min)]*[(AxisX.Max - AxisX.Min)/number of points]*(volume/100)However, I get strange results with the axis set to logbase = 2. I get massive overlapping bubbles, except when the volume goes below a certain threshold, at which point, there's no bubbles (but there are labels).With my data of around ~350 points, this threshold was around 60.

Therefore, I was wondering how logbases affect the bubble size calculation. Additionally, I'm also wonder whether I could use this to make bubbles larger when I have large amount of data points. Based on my understanding and current screen resolution, when plotting ~350 points, I can only get bubbles of maximum size 4px on normal axises without making the Y2 axis visible and zooming.

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