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Example
per=10+Cum(1)%10;
Plot(EMA(C,per),"",7,1);
will not function, since EMA does not accept variable per.
But, you may see it [and use it] with
per=10+Cum(1)%10;
smooth=2/(per+1);
W=AMA(C,smooth);
Play a little with
per=10+Cum(1)%10;
smooth=2/(per+1);
W=AMA(C,smooth);
Plot(W,"",4,8);Plot(EMA(C,10),"",5,1);Plot(EMA(C,20),"",5,1);
it is interesting.
DT
--- In amibroker@xxxxxxxxxxxxxxx, "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
wrote:
> Do not ignore, for now, the analytic way.
> Macd is a difference of two EMAs.
> An MACD for Vol, 12,26 would be
> MACDvol=EMA(V,12)-EMA(V,26);
> You may also introduce variable EMA period [not available now in
the
> built-in EMA), using the
> AMA(Array,smooth)=EMA(Array,per) with smooth=2/(1+per).
> DT
> --- In amibroker@xxxxxxxxxxxxxxx, uenal.mutlu@xxxx wrote:
> > Hi CS, DT and all,
> >
> > I too would like dynamic (user modifyable) args to
> > internal functions. For example the MACD and SIGNAL
> > functions work only on the Close price. It would be a
> > plus if user could override the default Close array it internally
> uses.
> > The function prototypes then would look like:
> > MACD(fastperiod = 12, slowperiod = 26, sourcearray = Close);
> > SIGNAL(fastperiod = 12, slowperiod = 26, signalperiod = 9,
> sourcearray = Close);
> > (here the last param was added).
> >
> > then such things like the following would be possible:
> > MACD(12,26,C) > MACD(12,26,EMA(C, 9));
> > or you could create the MACD for volume etc... :-)
> >
> > UM
> >
> >
> > ----- Original Message -----
> > From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Thursday, April 17, 2003 2:01 PM
> > Subject: [amibroker] Re: AmiBroker 4.31.0 BETA Question
> >
> >
> > > CS,
> > > something must be more clear:
> > > Do you speak for a variable period for RSI(periods) or for the
> RSI of
> > > another function?
> > > When we write RSI(12), we mean RSI calculated on Close,
> periods=12.
> > > An example of variable period should be like
> > > per=10+cum(1)%10;
> > > W=RSI(per);
> > > It will not work, since built-in RSI() does not accept variable
> > > period.
> > > The second case is to apply the RSI transformation on another
> > > function, say Stochastics.
> > > This is already included through the RSIA(Array,periods)
> function,
> > > but still for a fixed period.
> > > It would be better to be more specific, which improvement do
you
> ask.
> > > DT
> > > --- In amibroker@xxxxxxxxxxxxxxx, "CS" <csaxe@xxxx> wrote:
> > > >
> > > > Since converting some of my systems to dynamic parameter
input,
> my
> > > success (profits) has increased dramatically.
> > > > Unfortunately, most people don't know the difference between
> > > dynamic (variable) and static (constant) parameter inputs.
> > > > Simplistic Hint: Static- RSI(14); Dynamic- RSI( ATR
(3) );
> > > >
> > > > I have asked TJ to go back and re-work indicators and
functions
> to
> > > accept dynamic inputs, but he said that only three other people
> had
> > > asked for the same thing, so it is low on his priority list.
So,
> I
> > > have had to resort to manually coding each indicator/function
in
> > > script, and script sucks. Error messages while debugging are so
> > > vague, that they are useless.
> > > > The recent inclusion of native AFL looping and flow control
> will
> > > help.
> > > >
> > > > There are some functions that accept dynamic input such as
HHV,
> > > LLV, Sum, Ref, AMA, AMA2, WMA, DEMA, TEMA and MA.
> > > >
> > > > It would be nice if all new functions/indicators created
would
> > > accept dynamic inputs.
> > > >
> > > > -CS
> > > > ----- Original Message -----
> > > > From: Fred
> > > > To: amibroker@xxxxxxxxxxxxxxx
> > > > Sent: Wednesday, April 16, 2003 4:26 PM
> > > > Subject: [amibroker] Re: AmiBroker 4.31.0 BETA Question
> > > >
> > > >
> > > > I believe LinRegSlope takes as it's second argument a NON
> time
> > > > variant argument or a constant NOT an array like for
example
> AMA
> > > > would. I don't know but I supect the code I put in my
> original
> > > post
> > > > won't work any way or if it has a chance of working I
> wouldn't
> > > know
> > > > how to modify it so it does, maybe
> > > >
> > > > LRS = LinRegSlope(close[ i ], HilbertPeriod[ i ]);
> > >
> > >
> > > ------------------------ Yahoo! Groups Sponsor -----------------
--
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