Re: [amibroker] Re: Brain fried, How do I plot a zero line on my MACD, AmiBroker Email List Archive

This is close to what I was referring to as the array solution, though I would probably write it like this to make it symmetrical:

minmax = LastValue( HHV( abs( m ), r ) );

It would be interesting if we could have a faster operation such that if we used a SetBarsRequired( r, 0 ) in the preceding statement to reduce the range so the the range equaled the number of bars specified, that the returned value would be a single number of the result. Hmmmmm. If that mode were available, it would look like this:

m = MACD();

fb = Status("FirstVisibleBar");
lb = Status("LastVisibleBar");
r = lb - fb;

SetBarsRequired( r, 0 )
maximum = HHV( abs( m ), r );
Plot( m, "MACD", colorRed, styleOwnScale, -maximum, maximum );
Plot(0, "", colorBlack, styleOwnScale, -maximum, maximum);

Just a little brainstorming.

BR,

Dennis

On Jun 28, 2009, at 8:31 AM, Tony Grimes wrote:

Try this solution, array style:

m = MACD();

fb = Status("FirstVisibleBar");
lb = Status("LastVisibleBar");
r = lb - fb;

minimum = LastValue( LLV( m, r ) );
maximum = LastValue( HHV( m, r ) );

Plot( m, "MACD", colorRed, styleOwnScale, minimum, maximum );
Plot(0, "", colorBlack, styleOwnScale, minimum, maximum);

On Sat, Jun 27, 2009 at 11:16 AM, Dennis Brown <see3d@xxxxxxxxxxx> wrote:

Maybe not...

Through this discussion, the problem has been reduced to aligning the
min/max range of a MACD styleOwnScale plot to another zero line
styleOwnScale plot statement. Therefore, the only way to do this is
to find the min/max values of the MACD function in the visible bars
range and use those numbers in both plot statements, or make the MACD
range symmetrical and then the zero line statement can be any
symmetrical range.

I am happy with my dual colored plot line at this point. However, to
complete the original idea, I could use a simple loop to find the min/
max numbers of the MACD, but I am now wondering if there is a "faster"
execution way using array logic instead?

It seems like a waist of time to create an array of the Min/Max over
that range for all bars, then just use the last value. I use loops
when I only want a single number result related to the Min/Max value
over the last n bars only (like the visible bar range). Am I missing
an opportunity to approach this in a more efficient way?

BR,
Dennis

On Jun 27, 2009, at 9:06 AM, gmorlosky wrote:

> maybe....
>
> IF ( MACDline == Signalline) // histogram value equals zero
> X = lastvalue(MACDline-Signalline);
> Plot (X,"", colorblack);
>
> --- In amibroker@xxxxxxxxxxxxxxx, Dennis Brown <see3d@xxx> wrote:
>>
>> Yes, I have it set to 100%. The absolute values of the indicator
>> will
>> vary wildly, depending on the price and volatility of the stock. I
>> plot ES, so the values are quite large at times.
>>
>> BR,
>> Dennis
>>
>> On Jun 26, 2009, at 5:58 PM, monitorit wrote:
>>
>>> If that's all you needed, the color change would be best. But, I
>>> think the solution I suggested would work... you would still plot/
>>> see value very high or low just within a section defined by pane*1/
>>> minvalue [at least it has for me]. BTW, presently what is the upper
>>> and lower bounds of the MACD in relationship to the height of the
>>> pane? Is it 100% of the pane height?
>>> Dan
>>>
>>> --- In amibroker@xxxxxxxxxxxxxxx, Dennis Brown <see3d@> wrote:
>>>>
>>>> Dan,
>>>>
>>>> This is what I usually do for indicators when I know the range of
>>>> values. However, MACD is an unbounded indicator, so I don't know
>>>> how
>>>> large the values are. It is only the zero crossings and relative
>>>> peaks that are useful info here.
>>>>
>>>> I just thought there would be some simple shortcut to actually
>>>> scanning the visible bars for the min/max values to use in the plot
>>>> statements. I think I will just switch colors of the MACD from red
>>>> to
>>>> green if it is above or below zero instead of resorting to yet
>>>> another
>>>> loop.
>>>>
>>>> Thanks,
>>>> Dennis
>>>>
>>>>
>>>> On Jun 26, 2009, at 4:40 PM, monitorit wrote:
>>>>
>>>>> Dennis,
>>>>> Hi. You might try this- Place a value in minvalue section but
>>>>> none
>>>>> in maxvalue section [I think maybe a value like 2 equates to 1/2
>>>>> pane height] of your MACD and zero plot statements.
>>>>> Also,styleNoRescale in the zero plot statement. This worked for
>>>>> me
>>>>> when I wanted to plot a histogram and a dot on the top of the
>>>>> histogram. Not sure if it works with a line. If it doesn't, you
>>>>> could try plotohlc with H=max(0,my#) and L=min(0,my#).
>>>>>
>>>>> Dan
>>>>>
>>>>> --- In amibroker@xxxxxxxxxxxxxxx, Dennis Brown <see3d@> wrote:
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> This must be simple, but my AFL brain is fried today. I have an
>>>>>> MACD
>>>>>> plot on top of my main price chart, and I want to plot a zero
>>>>>> line
>>>>>> over it. It is plotted as StyleOwnScale of course. I can't use
>>>>>> StyleLeftAxis because I am using it for something else. I
>>>>>> guess I
>>>>>> could do something to figure out where the visible high and low
>>>>>> values
>>>>>> of the MACD are, but it seems like it should be easier than that.
>>>>>>
>>>>>> TIA,
>>>>>> Dennis
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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>>>
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>>> TO GET TECHNICAL SUPPORT send an e-mail directly to
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>
>
>
>
> ------------------------------------
>
> **** IMPORTANT PLEASE READ ****
> This group is for the discussion between users only.
> This is *NOT* technical support channel.
>
> TO GET TECHNICAL SUPPORT send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> http://www.amibroker.com/feedback/
> (submissions sent via other channels won't be considered)
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> Yahoo! Groups Links
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>