Fixed now in CVS.
-----Original Message-----
From: Phil Steitz
Sent: Wed 8/11/2004 5:35 PM
To: Jakarta Commons Users List
Cc:
Subject: Re: [Math] Getter methods in Frequency when there is no data
Brent Worden wrote:
> I agree with returning zero for the absolute frequencies.
>
> For the relative frequencies, I would argue for returning NaN as is done in
BivariateRegression when there is insufficient data.
>
> Brent Worden
Sounds good to me. Will make that change
>
> -----Original Message-----
> From: Phil Steitz [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, August 11, 2004 3:45 PM
> To: Jakarta Commons Users List
> Subject: RE: [Math] Getter methods in Frequency when there is no data
>
>
> Thanks for reporting this.
>
> I agree that getCumFreq should return 0, but the pct and cumPct are more
problematic. One could argue that an IllegalStateException would be more appropriate
for these. If there have been no values added, percentages don't really make sense.
Thoughts?
>
> Phil
>
> -----Original Message-----
> From: Shing Hing Man [mailto:[EMAIL PROTECTED]
> Sent: Wed 8/11/2004 7:41 AM
> To: commonMath
> Cc:
> Subject: [Math] Getter methods in Frequency when there is no data
>
>
>
> Hi,
> I have tested all the getter methods of
> org.apache.commons.math.stat.univariate.Frequency
> when
> no data has been added. (If anyone is interested, the
> JUnit test file
> is attached.)
> Here is a summary of the result.
>
> Method Result
> getCount returns 0 (as expected)
> getCumFreq
> java.util.NoSuchElementException
> getCumPct
> java.util.NoSuchElementException
> getPct returns NaN
> f.getSumFreq return 0 (as expected)
>
>
> Is it reasonable to expect all the getter methods to
> return 0, when
> there is no data ?
>
> My version of org.apache.commons.math is dated 10th
> August, 2004.
>
> regards,
> Shing
>
>
> =====
> Home page :
> http://uk.geocities.com/matmsh/index.html
>
>
>
>
>
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