Re: [ojAlgo-user] power or round functionality

[Argyrouska B. <esp...@gm...>]

Hi,

It seems a little hard to find any examples in the Javadocs. How exactly
you define an exponential operation (not a binary one like  XOR ^) using a
BinaryFunction?

Thanks again for your support

On 27 April 2015 at 22:43, Anders Peterson <an...@op...> wrote:

> Rounding can be done using UnaryFunction - just create an instance that
> does what you want. The class NumberContext can give you a function that
> may suit you. Instantiate a NumberContext and then call get***Function()
>
> There’s also the SCALE function of PrimitiveFunction. When/if you specify
> the parameter it turns into a unary function.
>
> I think you should switch from using BasicMatrix to
> MatrixStore/PhysicalStore.
>
> For “pow” you need a binary function...
>
> fillMatching(Access1D<? extends Number>)
> fillMatching(Access1D<Double>, BinaryFunction<Double>, Access1D<Double>)
> fillMatching(Access1D<Double>, BinaryFunction<Double>, Double)
> fillMatching(Double, BinaryFunction<Double>, Access1D<Double>)
>
>
> > On 27 apr 2015, at 20:30, Argyrouska Bob <esp...@gm...> wrote:
> >
> > Sorry,
> >
> > Thanks for your prompt reply.
> > Maybe I didn't make myself clear. I was referring to exponential similar
> to what native Java Math.pow() does.
> > What I am looking for is:
> >
> > BasicMatrix tA, tB;
> > tA.pow(tB); or tA.pow(2.0);
> >
> > which will eventually lead to tA^x, where x=element from tB (applied for
> each element) or a constant value.
> > Secondly a round function similar to what native Java Math.round()
> offers.
> > Meaning:
> >
> > BasicMatrix tA;
> > tA.round(RoundindMode);
> >
> > which will result in rounding each element of tA to RoundingMode, where
> RoundingMode=FLOOR, CEILING etc
> > Are these possible using UnaryFunctions?
> >
> > Thanks
> >
> > On 27 April 2015 at 20:00, Anders Peterson <an...@op...> wrote:
> > Sorry, I just noticed you were using BasicMatrix. It works a little
> different there (a somewhat limited set of functionality) partly because
> BasicMatrix instances are immutable. It does have a modify-method:
> >
> >     BasicMatrix modify(UnaryFunction<? extends Number>);
> >
> >
> >
> >
> > > On 27 apr 2015, at 18:51, Anders Peterson <an...@op...>
> wrote:
> > >
> > > Do you want to modify matrix elements?
> > >
> > > Everything that implements Access2D.Modifiable has these methods:
> > >
> > > modifyColumn(long, long, UnaryFunction<N>)
> > > modifyDiagonal(long, long, UnaryFunction<N>)
> > > modifyOne(long, long, UnaryFunction<N>)
> > > modifyOne(long, UnaryFunction<N>)
> > > modifyRange(long, long, UnaryFunction<N>)
> > > modifyRow(long, long, UnaryFunction<N>)
> > >
> > > If you’re using primitive double elements you’ll find a predefined set
> of functions in org.ojalgo.function.PrimitiveFunction
> > >
> > > The PhysicalStore.Factory also provides access to that set of
> functions.
> > >
> > > If you don’t find what you need you just create a custom UnaryFunction
> implementation.
> > >
> > > /Anders
> > >
> > >
> > >> On 27 apr 2015, at 18:29, Argyrouska Bob <esp...@gm...> wrote:
> > >>
> > >> Hello,
> > >>
> > >> I am a new member and still practicing with library but what
> surprises me is that I haven't found support for power functions or round
> to a BasicMatrix data type. Is this true or it's named somewhat different?
> > >>
> > >> Thanks and regards,
> > >> silver
> > >>
> > >>
> > >>
> ------------------------------------------------------------------------------
> > >> One dashboard for servers and applications across
> Physical-Virtual-Cloud
> > >> Widest out-of-the-box monitoring support with 50+ applications
> > >> Performance metrics, stats and reports that give you Actionable
> Insights
> > >> Deep dive visibility with transaction tracing using APM Insight.
> > >>
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________
> > >> ojAlgo-user mailing list
> > >> ojA...@li...
> > >> https://lists.sourceforge.net/lists/listinfo/ojalgo-user
> > >
> >
> >
> >
> ------------------------------------------------------------------------------
> > One dashboard for servers and applications across Physical-Virtual-Cloud
> > Widest out-of-the-box monitoring support with 50+ applications
> > Performance metrics, stats and reports that give you Actionable Insights
> > Deep dive visibility with transaction tracing using APM Insight.
> > http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
> > _______________________________________________
> > ojAlgo-user mailing list
> > ojA...@li...
> > https://lists.sourceforge.net/lists/listinfo/ojalgo-user
> >
> >
> >
> > --
> > Reality leaves a lot to imagination.
> >
> ------------------------------------------------------------------------------
> > One dashboard for servers and applications across Physical-Virtual-Cloud
> > Widest out-of-the-box monitoring support with 50+ applications
> > Performance metrics, stats and reports that give you Actionable Insights
> > Deep dive visibility with transaction tracing using APM Insight.
> >
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________
> > ojAlgo-user mailing list
> > ojA...@li...
> > https://lists.sourceforge.net/lists/listinfo/ojalgo-user
>
>
>
> ------------------------------------------------------------------------------
> One dashboard for servers and applications across Physical-Virtual-Cloud
> Widest out-of-the-box monitoring support with 50+ applications
> Performance metrics, stats and reports that give you Actionable Insights
> Deep dive visibility with transaction tracing using APM Insight.
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
> _______________________________________________
> ojAlgo-user mailing list
> ojA...@li...
> https://lists.sourceforge.net/lists/listinfo/ojalgo-user
>



-- 
Reality leaves a lot to imagination.