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These are a representation of Bomar Bands, Intermediate Trading Bands
and Breakout/Breakdown bands as used by Marc Chaikin and Bob Brogan.
The Bomar bands are designed to contain 85% of the closing price
above/below its own 21 MA. The Intermediate bands contain 90% of the
closing price above/below its own 50 MA and the Breakout/Breakdown
bands are 1.5 Std Deviations above and below the 90 MA. This
explanation is from memory and may be a touch off from the code. The
code below is not yet complete but is nearly there.
Brett
--- In amibroker@xxxx, "Christos Panayiotou" <pachris@xxxx> wrote:
> Hello
> Can you please interpret the above candlestick graph
> With regards christos
> ----- Original Message -----
> From: <brett_f1@xxxx>
> To: <amibroker@xxxx>
> Sent: 10 July 2001 16:25
> Subject: [amibroker] Re: Candlestick graphstyle problem
>
>
> > Thank you Jim and Tomasz. You found for me one of the dangers of
> > translating code from a spreadsheet to AFL. I had fixed other
> > references but missed that one. In the future, I need to take a
bit
> > more time and change those cell references to full names.
> >
> > Thanks again,
> >
> > Brett
> >
> > --- In amibroker@xxxx, "Tomasz Janeczko" <tj@xxxx> wrote:
> > > Hello Brett,
> > >
> > > Jim is right: you overwrite L (Low) array in your formula. Just
> > replace your L with L1 or so.
> > > I have attached fixed formula to this e-mail.
> > >
> > > Best regards,
> > > Tomasz Janeczko
> > > ===============
> > > AmiBroker - the comprehensive share manager.
> > > http://www.amibroker.com
> > >
> > > ----- Original Message -----
> > > From: Brett Forrester
> > > To: amibroker@xxxx
> > > Sent: Monday, July 09, 2001 10:07 PM
> > > Subject: [amibroker] Re: Candlestick graphstyle problem
> > >
> > >
> > > Tomasz,
> > >
> > > I tried your suggestion but still basically have the same
problem
> > as before. Below is my code and attached is a screen shot showing
> > the candles with long tails on the tops.
> > >
> > > A = MA ( C, 21 );
> > > SMA50 = MA ( C, 50);
> > > I = ( C - A ) / A;
> > > I50 = ( C - SMA50 ) / SMA50;
> > > J = IIF ( I > 0, I * I, 0 );
> > > J50 = IIF ( I50 > 0, I50 * I50, 0 );
> > > K = IIF ( J > 0, 1, 0 );
> > > K50 = IIF ( J50 > 0, 1, 0 );
> > > L = SUM ( K, 185 );
> > > L50 = SUM ( K50, 250);
> > > M = IIF ( I < 0, I * I, 0 );
> > > M50 = IIF ( I50 < 0, I50 * I50, 0 );
> > > N = IIF ( M > 0, 1, 0 );
> > > N50 = IIF ( M50 > 0, 1, 0 );
> > > OO = SUM ( N, 185 );
> > > OO50 = SUM ( N50, 250 );
> > > P = 1.43933 * SQRT ( SUM ( J, 185 ) / L );
> > > P50 = 1.645 * SQRT ( SUM ( J50, 250) / L50 );
> > > Q = 1.43933 * SQRT ( SUM ( M,185 ) / OO );
> > > Q50 = 1.645 * SQRT ( SUM ( M50,250 ) / OO50 );
> > > R = MA (P , 21 );
> > > R50 = MA (P50 , 21 );
> > > S = MA (Q, 21 );
> > > S50 = MA (Q50, 21 );
> > >
> > > UPPER = ( 1 + R ) * A;
> > > UPPERINT = ( 1 + R50 ) * SMA50;
> > > LOWER = ( 1 - S ) * A;
> > > LOWERINT = ( 1 - S50 ) * SMA50;
> > >
> > > SMA90 = MA (close, 90 );
> > > UpperBreakout = SMA90 + 15 * STDEV (SMA90, 21);
> > > LowerBreakout = SMA90 - 15 * STDEV (SMA90, 21);
> > >
> > > MAXGRAPH=9;
> > > graph1=2*c;
> > > graph0=upper;
> > > graph2=lower;
> > > GRAPH3=A;
> > > GRAPH4=UPPERINT;
> > > GRAPH5=LOWERINT;
> > > graph6=UpperBreakout;
> > > graph7=LowerBreakout;
> > > GRAPH1STYLE=64;
> > >
> >
GRAPH0STYLE=GRAPH2STYLE=GRAPH3STYLE=GRAPH4STYLE=GRAPH5STYLE=graph6styl
> > e=graph7style=1;
> > > graph0color=graph2color=9;
> > > GRAPH4COLOR=GRAPH5COLOR=5;
> > > graph1color=16;
> > > graph6color=graph7color=4;
> > > title= name() + " " + date() + " Price:" + writeval(close,.2)
> > + " - Upper Bomar = " + writeval( graph0,.2 ) + ", Lower Bomar
= " +
> > writeval( graph2,.2 ) +
> > > ", 21MA = " + writeval(graph3,.2 ) + ", Upper Intermedite
= " +
> > writeval(graph4,.2 ) +", Lower Inermediate = " + writeval
(graph5,.2 );
> > >
> > > high=2*high;
> > > low=2*low;
> > > open=2*open;
> > >
> > > Please excuse the colors as I am in the process of modifying
some
> > of the assignments and I have not completed the changes prior to
this
> > screen shot.
> > >
> > > Thanks for your assistance again,
> > >
> > > Brett
> > >
> > > --- In amibroker@xxxx, "Tomasz Janeczko" <tj@xxxx> wrote:
> > > > Dear Brett,
> > > >
> > > > Please do not be afraid about your database.
> > > > AFL formulas are safe because they operate on copies of the
data
> > > > so even if you modify the OHLC arrays in the AFL formula
> > > > this wouldn't affect the database (unless you are using
> > scripting and automation
> > > > - but this is another story)
> > > >
> > > > An example:
> > > >
> > > > graph0 = 2 * close;
> > > > graph0style = 64;
> > > > graph0color = 2;
> > > > high = 2 * high;
> > > > low = 2 * low;
> > > > open = 2 * open;
> > > >
> > > > draws candlestick chart with doubled prices.
> > > >
> > > >
> > > > Best regards,
> > > > Tomasz Janeczko
> > > > ===============
> > > > AmiBroker - the comprehensive share manager.
> > > > http://www.amibroker.com
> > > >
> > > > ----- Original Message -----
> > > > From: brett_f1@xxxx
> > > > To: amibroker@xxxx
> > > > Sent: Tuesday, July 03, 2001 1:07 AM
> > > > Subject: [amibroker] Re: Candlestick graphstyle problem
> > > >
> > > >
> > > > Yes I did/do realize the candles must also use the high,
low
> > and open
> > > > values in addition to the close I'm using. However, I
> > incorrectly
> > > > assumed that these values would be read without me having
to
> > write
> > > > them into the code.
> > > >
> > > > How do I OVERWRITE the High, Low and Open variables? I
> > hesitate to
> > > > try this on my own as I've grown tired of restoring my
> > databases
> > > > after other blunders I've made.
> > > >
> > > > Regards,
> > > >
> > > > Brett
> > > >
> > > >
> > > >
> > > > --- In amibroker@xxxx, "Tomasz Janeczko" <tj@xxxx> wrote:
> > > > > Hello Brett,
> > > > >
> > > > > If you are using graphstype=64 you have to know that
this
> > style
> > > > > uses indirectly High, Low and Open arrays. This is so
> > because
> > > > > candlesticks need 4 arrays to draw (not only one)
> > > > > So it is not enough to write:
> > > > > graph0 = something;
> > > > > graph0style = 64;
> > > > >
> > > > > but you have to OVERWRITE the High, Low and Open
variables.
> > > > > (the safest way is to do this at the end of the formula
> > otherwise
> > > > built in functions
> > > > > will operate on overwritten values)
> > > > >
> > > > > Best regards,
> > > > > Tomasz Janeczko
> > > > > ===============
> > > > > AmiBroker - the comprehensive share manager.
> > > > > http://www.amibroker.com
> > > > >
> > > > > ----- Original Message -----
> > > > > From: brett_f1@xxxx
> > > > > To: amibroker@xxxx
> > > > > Sent: Saturday, June 30, 2001 6:45 PM
> > > > > Subject: [amibroker] Candlestick graphstyle problem
> > > > >
> > > > >
> > > > > I'm using geaphstyle=64 with some other graphs to
overlay
> > some
> > > > other
> > > > > indicators with and I'm having a problem with the end
> > result of
> > > > the
> > > > > display. The candles appear with an outline color and
> > long thin
> > > > tops
> > > > > from the body to the top of the chart. Has anyone
else
> > > > experienced
> > > > > this type of problem and been able to fix it?
> > > > >
> > > > > Brett
> > > > >
> > > > >
> > > > > Your use of Yahoo! Groups is subject to the Yahoo!
Terms
> > of
> > > > Service.
> > > >
> > > >
> > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms
of
> > Service.
> > >
> > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> > Service.
> >
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
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