recalculating parameters of the standard deviational ellipse

Discussion created by janschit on Apr 20, 2012
Latest reply on Apr 26, 2012 by janschit
Hi colleagues,
I am working with ArcGIS 10.0 (SP 4) and are trying very hard to recalculate the XStdDist and YStdDist values for the Standard Deviational Ellipse ArcGIS offers me by hand (using Excel).
I was able to reproduce the angle of rotation but not more. The values I get for the axes of the ellipse do not differ from each other and are completely different from the ArcGIS results.
I used the formulars in the ArcGIS Help but somewhere I am doing a fatal mistake.
Could anybody help me with a hint? I am desperately looking for a solution.
Thanks so much in advance