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From Gilles <gil...@harfang.homelinux.org>
Subject Re: [math]plot distribution
Date Mon, 22 Jun 2015 09:06:32 GMT
On Sun, 21 Jun 2015 23:54:21 -0700, narjes saraie wrote:
> Hi.
> I download RealDistributionComparison.java  from
>   <http://s.apache.org/HTo>  but  in program there is "import
> org.apache.commons.math4.util.FastMath;
> 52 ",... .
> how do I download math4 ?

Replace "math4" with "math3" in the "import" statement and it should
work fine.


Best regards,
Gilles


>  only there  is  commons math 3.5  in apache address and netbeans 
> error.
> how I can solve it ,please?
> thanks
>
>
>
> On Fri, Jun 19, 2015 at 7:24 AM, Phil Steitz <phil.steitz@gmail.com> 
> wrote:
>
>> On 6/19/15 2:22 AM, narjes saraie wrote:
>> > Hi Phil.
>> >
>> >
>> > I open http://s.apache.org/HTo  <http://s.apache.org/HTo>
>> > but i couldent use it.Is it possible for you to attache one  
>> source of
>> the
>> > plot?
>>
>> Click on "RealDistributionComparison.java" and you will see the
>> source code.
>>
>> Phil
>> > I dont know witch line help me to draw the plots in the user
>> > guide section on probability distributions?
>> > Im sorry that Im  very very beginner.
>> >
>> >
>> > thanks a lot .
>> >
>> >
>> > <http://s.apache.org/HTo>
>> >
>> > On Thu, Jun 18, 2015 at 8:06 AM, Phil Steitz 
>> <phil.steitz@gmail.com>
>> wrote:
>> >
>> >> On 6/18/15 6:31 AM, narjes saraie wrote:
>> >>> Hi All.
>> >>> I am beginner in java and have some data.I want to guess a 
>> distribution
>> >> for
>> >>> my data then calculate goodness of fit (gof).
>> >>> I find distribution commons math and use it ,if i want plot my
>> >> distribution
>> >>> or CDF or probability (X>x), how do it?
>> >>> is it any example for distribution and plotting it.
>> >> We don't have graphical exploratory data analysis tools in 
>> Commons
>> >> Math.  You would do best to start with a package that supports
>> >> generation of histograms if you have no idea what distribution 
>> might
>> >> fit the data.  If you do have an idea of what the distribution 
>> is,
>> >> depending on what it is, you may be able to estimate the 
>> parameters
>> >> of the distribution from the data.  For example, if you think 
>> that
>> >> the data are normally distributed, you can use SummaryStatistics 
>> in
>> >> the stat package to get the standard statistical estimators of 
>> the
>> >> mean and standard deviation, which together determine a normal
>> >> distribution. Then you could do a Kolmogorov-Smirnov test (or 
>> group
>> >> the data and use a G- or ChiSquare test) to assess goodness of 
>> fit.
>> >> Other distributions have different parameters and different
>> >> statistical estimators.
>> >>
>> >> We don't currently support plotting distributions in Commons 
>> Math,
>> >> but the user guide code contains an example showing how to do it
>> >> with some external tools.  Have a look at the plots in the user
>> >> guide section on probability distributions [1] and the source for
>> >> the code that generates those plots [2].
>> >>
>> >> Phil
>> >>
>> >> [1]
>> >>
>> 
>> http://commons.apache.org/proper/commons-math/userguide/distribution.html
>> >> [2] http://s.apache.org/HTo
>> >>


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