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T O P I C    R E V I E W
sebastien leblond Posted - 06/17/2008 : 10:41:20 AM
Origin Version (Select Help-->About Origin): 8
Operating System: Win XP

I was wondering if anyone knows how to control the outliers on the Box and Whisker Plot. In the whisker range options, when I accept the default coefficient value (1.5), the whisker length defines the upper inner and lower inner fence value.


When I select Outliers in the Box options, appear the points that lie outside of the fence values but also the 2 fence values, which are not considered as outliers. I think the problem is coming from a sign < = instead of <.


I also would like that the upper inner and lower inner fence value appear in the worksheet.
Does any body know a solution to this?
many thanks
5   L A T E S T    R E P L I E S    (Newest First)
larry_lan Posted - 07/20/2009 : 9:44:55 PM
Hi:

Do you mind sending your OPJ to us from here, and then we can look into it?

Thanks
Larry
sebastien leblond Posted - 07/20/2009 : 08:57:54 AM
Hi,

Is this problem of" Outliers" (point just lie on the whisker boundary)is fixed in SR5?

I have an other problem. I plot a lot of box chart but sometimes, and I don't know why, some outliers points are disappearing from the graph when I try to copy or export or print it. What can I do?

Thanks
larry_lan Posted - 07/04/2008 : 04:29:46 AM
Hi:

I think the document you posted comes from Origin 7.5, right? Actually, the definition in 75 is incorrect. We change it in 80, please see the explanation below.



This definition is consistent with SPSS and SAS.

Regarding when you check the "Outliers" checkbox, we show the point just lie on the whisker boundary. It's a bug and We will fix it in the next patch.

Thanks
Larry
OriginLab Technical Services
sebastien leblond Posted - 06/24/2008 : 05:58:56 AM
Hi,

I don’t understand your answer about the fact that the “whisker length does not defines the upper inner and lower inner fence value. It is range of outer-most data point that falls within ¡À 1.5 * IQR “. Because, in the Help menu “Help, Origin, Index, Customizing the Box Chart: Box Tab Controls”, the following explanations are given. The plot given as example is exactly what I would like
Thanks
Echo_Chu Posted - 06/19/2008 : 04:07:07 AM
Hi, Sebastien

Please note that the whisker length does not defines the upper inner and lower inner fence value. It is range of outer-most data point that falls within ¡À 1.5 * IQR

I am sorry that we do not support upper inner and lower inner fence value shown in worksheet. But you can use following script to quickly get the inner fence values
1. Hightlight the data column
2. Run following script

quantiles q1:=q1 q3:=q3 iqr:=iqr;
q3+1.5*iqr=;
q1-1.5*iqr=;




Moreover, thank for reporting us the outlier points problem, It has been reported in tracker #11745 and will be fixed later.


Echo
OriginLab Corp

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