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One has to go to each chart to change the parameters for that chart.
The afl is a system so all parameters are needed so that Buy and Sell can be defined. I can, for example, change the Macd parameters via the top chart but these changes are not reflected in the middle Macd chart. I have to go to the middle chart, change the Macd parameters and then see the revised Macd chart.
I really can not put parameters within each 'if' as I need for the system buys and sells. I guess I will have to live with this.
Thanks for the help as understand another way of doing charts.
--- In amibroker@xxxxxxxxxxxxxxx, Keith McCombs <kmccombs@xxx> wrote:
>
> Bistrader --
> I rarely use Param() --
> However, I _believe_ that if the Param() statements are outside and
> before the plot() statements that they will effect the three charts
> equally. But if this isn't so, you might explicitly try declaring the
> arrays that you are setting equal to Param() as Global. Again, I am not
> sure. You will have to try it.
>
> I also _believe_ that, whatever Param() statements you put inside the
> if(GetChartID()==chartID + 1){ }, will effect that pane only.
> -- Keith
>
> bistrader wrote:
> >
> >
> > Got it and thanks. I will do it now. I am hoping that I can right
> > click on first chart, change parameters and see all 3 charts change as
> > I move parameter bars around.
> >
> > --- In amibroker@xxxxxxxxxxxxxxx <mailto:amibroker%40yahoogroups.com>,
> > Keith McCombs <kmccombs@> wrote:
> > >
> > > Bistrader --
> > > Yes you insert link 3 times, once for each chart. You want to do them
> > > consecutively, before doing any other charts for other strategies,
> > > because they are numbered consecutively as they are entered.
> > >
> > > Oops, for the third chart it should be:
> > > if(GetChartID()==chartID + 2){
> > > instead of:
> > > if(GetChartID()==chartID + 1){
> > > That's what I get for using cut and paste.
> > >
> > > BTW, I embedded an image in my first post. It is not displayed, if you
> > > view the posts on the Yahoo groups web site. However, if you view posts
> > > in your own email, it is displayed.
> > > -- Keith
> > >
> > > bistrader wrote:
> > > >
> > > >
> > > > I will give it a go. Do I insert link the same afl 3 times? Once to
> > > > get xxxx and display price, a second time for Macd and finally for
> > > > stochastic?
> > > >
> > > > --- In amibroker@xxxxxxxxxxxxxxx
> > <mailto:amibroker%40yahoogroups.com>
> > <mailto:amibroker%40yahoogroups.com>,
> > > > Keith McCombs <kmccombs@> wrote:
> > > > >
> > > > > bistrader --
> > > > > Looks like you might be trying to take to large a bite out of that
> > > > > sandwich all at once.
> > > > >
> > > > > Can you do the following to your satisfaction?
> > > > > 1. Plot the price chart with the EMA. Leave the shapes for later.
> > > > > 2. Plot the MACD histogram on the same chart. Again, shapes for
> > later.
> > > > > 3. Plot the Stochastic on the same chart. Again, shapes for later.
> > > > >
> > > > > I gave up trying to do the above long ago. Instead, I have three
> > > > > separate charts, displayed horizontally. I use one .afl, with the
> > > > > following construct:
> > > > >
> > > > > ////---- code -----/////
> > > > > chartID = xxxx; // get xxxx using 'insert' indicator, not 'Apply'
> > > > > indicator.
> > > > > // do as many inserts has you want charts, in your case 3.
> > > > > if(GetChartID()==chartID){
> > > > > _SECTION_BEGIN("Price");
> > > > > ; // plot price and emas here with shapes if desired
> > > > > _SECTION_END();
> > > > > }
> > > > > if(GetChartID()==chartID + 1){
> > > > > _SECTION_BEGIN("MACD");
> > > > > ; // plot MACD here with shapes if desired
> > > > > _SECTION_END();
> > > > > }
> > > > > if(GetChartID()==chartID + 1){
> > > > > _SECTION_BEGIN("Stoch");
> > > > > ; // plot Stoch here with shapes if desired
> > > > > _SECTION_END();
> > > > > }
> > > > > ////---- end code -----/////
> > > > >
> > > > > Once you've have that working you can move the size and reorder the
> > > > > charts by using on screen manual manipulation. Scale, display dates,
> > > > > etc. independently.
> > > > >
> > > > >
> > > > >
> > > > > bistrader wrote:
> > > > > >
> > > > > >
> > > > > > I am having problems with Plot statements in one afl that I
> > want to
> > > > > > plot Price (with EMAs) at the top, Macd histogram in the
> > middle and
> > > > > > stochastic at the bottom. Each of the 3 has PlotShapes as well.
> > > > > >
> > > > > > Here is what I have.
> > > > > > 1. I use the following for price with EMAs and with plotshape
> > arrows
> > > > > > at top. This works fine:
> > > > > > Plot(Close, "Close",colorBlack,styleThick);
> > > > > > Plot(ema, "EMA",colorRed,styleThick);
> > > > > > OffsetTradeArrow = -25;
> > > > > > PlotShapes(ema_buy*shapeUpArrow, colorGreen, 0, Fund,
> > > > OffsetTradeArrow);
> > > > > > PlotShapes(ema_sell*shapeDownArrow, colorRed, 0, Fund,
> > > > OffsetTradeArrow);
> > > > > >
> > > > > > 2. Then, I move on to Macd histogram where I am having
> > problems with
> > > > > > Min and Max values to start with and then with how to overlay its
> > > > > > PlotShapes:
> > > > > >
> > > >
> > Plot(MACD_Histo,"MACD_Histo",colorBlack,styleHistogram|styleOwnScale,min?,max?);
> > > > > > OffsetTradeArrow = -25;
> > > > > > PlotShapes(macd_buy*shapeUpArrow, colorGreen, 0, MACD_Histo,
> > > > > > OffsetTradeArrow);
> > > > > > PlotShapes(macd_sell*shapeDownArrow, colorRed, 0, MACD_Histo,
> > > > > > OffsetTradeArrow);
> > > > > >
> > > > > > I play around (a lot) using an rsi example posted here but not
> > making
> > > > > > any progress. I can get Macd_Histo times 100 (Macd_Histo*100)
> > to plot
> > > > > > with min at -100 and max at 100/20*100 or 500, but have no
> > idea why I
> > > > > > had to use -100 for min value. The 100/20*100 is from the rsi
> > example
> > > > > > posted here. And, I can not figure out how to get PlotShapes
> > for macd
> > > > > > to be over this Macd_Hist plot.
> > > > > >
> > > > > > 3. Then, I move onto Stochastic and can only get this to plot
> > over
> > > > the
> > > > > > Macd_histo and not below it. So, can not figure out how to do min
> > > > > > value, max value and then plotshapes over this.
> > > > > > Plot(StochDSlow," Slow
> > > > %D",colorRed,styleThick|styleOwnScale,min?,max?);
> > > > > >
> > > > > > OffsetTradeArrow = -25;
> > > > > > PlotShapes(stoch_buy*shapeUpArrow, colorGreen, 0, StochDSlow,
> > > > > > OffsetTradeArrow);
> > > > > > PlotShapes(stoch_sell*shapeDownArrow, colorRed, 0, StochDSlow,
> > > > > > OffsetTradeArrow);
> > > > > >
> > > > > > Help appreciated. Examples too. Thanks.
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > >
> >
> >
>
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