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? 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 <[email protected]> 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 > > > thanks. > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
