Latest Contributions by SusanneZimmermann-Janschitz

‎04-26-2012

Dear colleagues, I did find the mistake - the formulas contain a mistake - instead of a minus there seems to be a plus in the formula for the standard dev of the y-axis. Additional there is a scaling factor implemented. Thanks Susanne

‎04-25-2012

Thanks for your reply. The sum is simply about the doubled value since they are almost the same. I have attached the excel sheet to my mail because its hard to explain in words. I am sure I made a simple but essentail mistake and although trying to solve I am some kind of "blind". Thanks Susanne

‎04-20-2012

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 Susanne

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Latest Contributions by SusanneZimmermann-Janschitz

Re: recalculating parameters of the standard deviational ellipse

Re: recalculating parameters of the standard deviational ellipse

recalculating parameters of the standard deviational ellipse