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from the help screen
"EXAMPLE The formula "roc( CLOSE, 14 )" returns the 14-period percent
rate-of-change of the closing prices. "
so ROC( xyz, 1 ) is the change compared to 1 bar ago
Addcolumn
"By default all variables are displayed with 2 decimal digits, but you
can change this by assigning a different value to this variable: 1.5
gives 5 decimal digits, "
so 1.3 is 3 decimal places
On 7/18/05, cstdc5588 <cstdc5588@xxxxxxxxx> wrote:
> Hi Graham,
>
> THANK YOU SO MUCH! YOU ARE SOOO NICE!
>
> Please excuse me if I ask some stupid questions.
>
> What does the "1" in "Slope20 = ROC(ma(c,20),1);"
> represent? And what about the "1.3" in "addcolumn(slo
> pe20,"slope20,1.3);" represent? Are they always constants or
> variables that can be changed according to different conditions? Do
> they represent slopes or something? I need to know this in order to
> put the right value there.
>
> Robert.
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxxx> wrote:
> > Cond = Cross( MA (Close, 20), MA(Close, 50) );
> > Cond1 = Cross( MA (Close, 50), MA(Close, 20) );
> > Buy = Cond;
> > Sell = Cond1;
> >
> > Well i pointed to using ROC
> >
> > Slope20 = ROC(ma(c,20),1);
> > Slope50 = ROC(ma(c,50),1);
> >
> >
> > to help yourself see what type of results use an exploration to
> provide numbers
> >
> > filter=cond or cond1;
> > addcolumn(slope20,"slope20,1.3);
> > addcolumn(slope50,"slope50,1.3);
> >
> > checking this against your charts you can work out the slope value
> you
> > want, then add this to your buy/sell conditions, something like
> this
> >
> > eg
> > buy = cond and roc(ma(c,20),1)>0.5;
> >
> >
> >
> > On 7/18/05, cstdc5588 <cstdc5588@xxxx> wrote:
> > > Hi Graham,
> > >
> > > Thanks a lot. You're so nice.
> > >
> > > Actually, I just need one simple formula, i.e., when 2 moving
> avgs
> > > cross, as in this formula:
> > >
> > > ///////
> > > Cond = Cross( MA (Close, 20), MA(Close, 50) );
> > > Cond1 = Cross( MA (Close, 50), MA(Close, 20) );
> > > Buy = Cond;
> > > Sell = Cond1;
> > > ///////
> > >
> > > I hope when a fast MA crosses a slow MA from bottom upward, the
> > > slope of the crossover tangent point of the fast MA is more than
> > > 0.5. On the other hand, when a fast MA crosses a slow MA from
> top
> > > downward, the slope of the crossover tangent point of the fast
> MA is
> > > less than -0.5. That is, the "buy" signal must satisfy the
> > > specified condition and with a slope > 0.5. On the other hand,
> > > the "sell" signal must satisfy the specified condition and
> > > with a slope < -0.5.
> > >
> > > I understand that this slope must be calculated first, but I
> > > don't know how to calculate it using AFL.
> > >
> > > Could you please help me with this function? Your help would be
> > > much appreciated.
> > >
> > > Robert.
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxxx>
> wrote:
> > > > Unless you need intensive help, or want someone else to just
> write
> > > > them for you then stick with this group to help solve the
> little
> > > > things.
> > > > Don't know of any paid service, except maybe by AB. Checik with
> > > the AB
> > > > website and see if anything is there.
> > > > Otherwise us freebie helpers can assist each other with the
> > > learning curve.
> > > >
> > > > On 7/18/05, cstdc5588 <cstdc5588@xxxx> wrote:
> > > > > Hi Graham,
> > > > >
> > > > > Thanks a lot.
> > > > >
> > > > > Because I don't know much about AFL, I need some help to do
> this.
> > > > > I remember I've seen a link saying that someone can provide
> this
> > > > > service (of course, there'll be a charge), but I can't find
> > > > > it now. Do you know about this service? Where can I get it?
> > > Any
> > > > > suggestions? Or do you know the link?
> > > > >
> > > > > Robert.
> > > > >
> > > > >
> > > > > --- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxxx>
> > > wrote:
> > > > > > just use ROC(indicator,1) to get slope, will be expressed
> as Y-
> > > > > value/bar
> > > > > >
> > > > > > do a search for other posts of the same type if you want to
> > > > > convert to
> > > > > > some other value slope.
> > > > > >
> > > > > > On 7/18/05, cstdc5588 <cstdc5588@xxxx> wrote:
> > > > > > > Hi Friends,
> > > > > > >
> > > > > > > I want to know whether the AFL of AmiBroker could be
> used to
> > > > > > > calculate the slope at any specific point on a curve.
> > > > > > >
> > > > > > > For instance, if I want to find out the slope of the
> point
> > > when
> > > > > a 10-
> > > > > > > period moving average crosses a 20-period moving average,
> > > could
> > > > > this
> > > > > > > slope be calculated by AFL? For the slope I hope it'll
> be
> > > > > > > expressed as 3/2 or -0.5, not as 30 degrees or 45
> degrees,
> > > as the
> > > > > > > latter is too complicated and needs to use trigonometry
> to
> > > > > calculate.
> > > > > > >
> > > > > > > Any help would be much appreciated
> > > > > > >
> > > > > > > Robert.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Please note that this group is for discussion between
> users
> > > only.
> > > > > > >
> > > > > > > To get support from AmiBroker please send an e-mail
> directly
> > > to
> > > > > > > SUPPORT {at} amibroker.com
> > > > > > >
> > > > > > > For other support material please check also:
> > > > > > > http://www.amibroker.com/support.html
> > > > > > >
> > > > > > >
> > > > > > > Yahoo! Groups Links
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Cheers
> > > > > > Graham
> > > > > > http://e-wire.net.au/~eb_kavan/
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Please note that this group is for discussion between users
> only.
> > > > >
> > > > > To get support from AmiBroker please send an e-mail directly
> to
> > > > > SUPPORT {at} amibroker.com
> > > > >
> > > > > For other support material please check also:
> > > > > http://www.amibroker.com/support.html
> > > > >
> > > > >
> > > > > Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > > --
> > > > Cheers
> > > > Graham
> > > > http://e-wire.net.au/~eb_kavan/
> > >
> > >
> > >
> > >
> > >
> > > Please note that this group is for discussion between users only.
> > >
> > > To get support from AmiBroker please send an e-mail directly to
> > > SUPPORT {at} amibroker.com
> > >
> > > For other support material please check also:
> > > http://www.amibroker.com/support.html
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> > --
> > Cheers
> > Graham
> > http://e-wire.net.au/~eb_kavan/
>
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
--
Cheers
Graham
http://e-wire.net.au/~eb_kavan/
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