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Hello Mike & Barry
Quite correctly - I was focused on the efficiency/elegance of the code and I did not pay enough attention to the code itself ie as you correctly pointed out the second condition needed to be considered. Thankyou for pointing that out.
My take on the colour volume is slightly different where the colour of the volume reflects the current close relative to the previous period's close ie C - Ref(C, -1) and is more insightful when using the volume histogram at a glance.
For those who aggree with this view the code segment below may be of use.
_SECTION_BEGIN("Variable Volume Hight2");
direction = C - Ref(C, -1);
VolColor = (direction > 0) * ParamColor( "UpColor" ,colorGreen) + (direction <= 0)*ParamColor( "DnColor" ,colorRed) ;
vHeight = Param("Volume: 1 / Height",10, 1, 100, 1.0) ; // height as % of screen
Plot(Prec(Volume ,0),"V",VolColor, styleNoTitle | styleOwnScale| styleNoLabel | styleHistogram |styleThick | styleNoLabel, vHeight);
_SECTION_END();
Cheers
Ed
--- In amibroker@xxxxxxxxxxxxxxx, "Mike" <sfclimbers@xxx> wrote:
>
> You have not correctly inverted the opposite condition. The expression that you should be trying to form is as follows;
>
> In the case of up volume:
>
> ( (1 * colorGreen) + (0 * colorRed) )
>
> which you will note is equivalent to simply saying "colorGreen" since we are zeroing out the colorRed value. Conversely, in the case of down volumne:
>
> ( (0 * colorGreen) + (1 * coloreRed) )
>
> which is the same as simply saying "colorRed" since we zero out the colorGreen value.
>
> In your code you have not inverted the up condition for application to down color. Therefore your values are evaluating to other colors.
>
> In the case of up volume:
>
> 1 * colorGreen + 1 * colorRed
>
> In the case of down volume:
>
> 0 * colorGreen + 0 * colorRed
>
> Change your code to something like:
>
> (direction * colorGreen) + (!direction * colorRed);
>
> better yet, change your variable name accordingly:
>
> (upVolume * colorGreen) + (!upVolume * colorRed);
>
> Mike
>
> --- In amibroker@xxxxxxxxxxxxxxx, "edwol53" <edwol@> wrote:
> >
> > Hello Barry
> >
> > I made a slight modification to your code below, which should give the same clour output for volume, but it instead it plots black for green & light grey for red. The boolean expression for direction should resolve to 1 (true) or 0 (false) and Volcolor should plot the same as you original code. Can you why this is not the case ?
> >
> > _SECTION_BEGIN("Variable Volume Hight2");
> > direction = C > O OR (C == O AND (H-C) <= (C-L) );
> > VolColor = (direction) * ParamColor( "UpColor" ,colorGreen) + (direction )*ParamColor( "DnColor" ,colorRed) ;
> > vHeight = Param("Volume: 1 / Height",10, 1, 100, 1.0) ; // height as % of screen
> > Plot(Prec(Volume ,0),"V",VolColor, styleNoTitle | styleOwnScale| styleNoLabel | styleHistogram | styleNoLabel, vHeight);
> > _SECTION_END();
> >
> > Thanks
> > Ed
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Barry" <razzbarry@> wrote:
> > >
> > > The formula in post 146327 has parameters that allow you to change the color. OR you can use this version which also has colors red and green but also has parameters for the colors. Just make a formula out of it and drag and drop onto the price all in one screen.
> > >
> > > _SECTION_BEGIN("Variable Volume Hight");
> > > VolColor = (C > O OR (C == O AND (H-C) <= (C-L) )) * ParamColor( "UpColor" ,colorGreen) + (C < O OR (C == O AND (H-C) > (C-L)) )*ParamColor( "DnColor" ,colorRed) ;
> > > vHeight = Param("Volume: 1 / Height",10, 1, 100, 1.0) ; // height as % of screen
> > > Plot(Prec(Volume ,0),"V",VolColor, styleNoTitle | styleOwnScale| styleNoLabel | styleHistogram | styleNoLabel, vHeight);
> > > _SECTION_END();
> > >
> > > Barry
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "Richard" <areehoi@> wrote:
> > > >
> > > > I'm interested in using this "Price (all in one)" chart but, how would I change code to show color ...Green for up volume and red for down volume. Thanks
> > > >
> > > > Dick H
> > > >
> > > > --- In amibroker@xxxxxxxxxxxxxxx, Tomasz Janeczko <groups@> wrote:
> > > > >
> > > > > Hello,
> > > > >
> > > > > Price (all in one).afl shipped with AmiBroker contains the code that
> > > > > does that exactly.
> > > > > You can use AFL Editor to see the underlying code and see how it is done.
> > > > >
> > > > > Best regards,
> > > > > Tomasz Janeczko
> > > > > amibroker.com
> > > > >
> > > > > On 2010-01-25 11:01, osp2osp wrote:
> > > > > > Mike,
> > > > > >
> > > > > > Thank you very much for your kind reply.
> > > > > >
> > > > > > It is dead end for me. May be, I have to place my request properly.
> > > > > >
> > > > > > Price is already plotted along with moving averages and Bollinger Bands.
> > > > > >
> > > > > > I just want to overlay the volume bars at the bottom of the screen. So that, the area available for price plot is not reduced and at the same time the volume spikes do not go up to the top of window.
> > > > > >
> > > > > > Hope, I am clear.
> > > > > >
> > > > > > Thank you once again.
> > > > > >
> > > > > > Warm Regards
> > > > > >
> > > > > >
> > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "Mike"<sfclimbers@> wrote:
> > > > > >
> > > > > >> Multiple plots on a single pane have been discussed in the following thread. Read through it and see if it's what you want:
> > > > > >>
> > > > > >> http://finance.groups.yahoo.com/group/amibroker/message/143807
> > > > > >>
> > > > > >> Mike
> > > > > >>
> > > > > >> --- In amibroker@xxxxxxxxxxxxxxx, "osp2osp"<osp2osp@> wrote:
> > > > > >>
> > > > > >>>
> > > > > >>> Hi,
> > > > > >>>
> > > > > >>> Thanks for the reply. I tried that already.
> > > > > >>>
> > > > > >>> Plot(Volume, "",MyVolCol,styleOwnScale+styleHistogram,0,20);
> > > > > >>>
> > > > > >>> Not getting the desired the results.
> > > > > >>>
> > > > > >>> Thank You Very Much.
> > > > > >>>
> > > > > >>> Regards.
> > > > > >>>
> > > > > >>> --- In amibroker@xxxxxxxxxxxxxxx, Keith McCombs<kmccombs@> wrote:
> > > > > >>>
> > > > > >>>> Check AFL Help for how to use Plot() function. You need to use sixth
> > > > > >>>> parameter, maxvalue.
> > > > > >>>>
> > > > > >>>> osp2osp wrote:
> > > > > >>>>
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>> Hi,
> > > > > >>>>>
> > > > > >>>>> I like to plot the volume in the price window itself and tried the
> > > > > >>>>> following:
> > > > > >>>>>
> > > > > >>>>> Plot(Volume, "Vol",MyVolCol,styleOwnScale+styleHistogram);
> > > > > >>>>>
> > > > > >>>>> It plots the volume bars in entire price window.
> > > > > >>>>>
> > > > > >>>>> I need help to plot ie. overlay volume at the bottom of the price
> > > > > >>>>> window, taking not more than 20% of the entire price window.
> > > > > >>>>>
> > > > > >>>>> Request someone to help me.
> > > > > >>>>>
> > > > > >>>>> Thank you very much.
> > > > > >>>>>
> > > > > >>>>> Warm Regards.
> > > > > >>>>>
> > > > > >>>>> K Karunakaran
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>
> > > > > >>>
> > > > > >>
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
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> > > > > >
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> >
>
------------------------------------
**** IMPORTANT PLEASE READ ****
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