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I spent two years becoming fairly literate with the way AB works. At the beginning I would modify a
script, delete the script displayed on a chart and re-drop the modified script over my price chart.
Whenever I didn't do this odd things seemed to happen. Much later I worked out how to use #include
and insert linked to get the result I wanted. I learnt how to use loop code because I couldn't
figure out applyStop or ExRem. My first system went from a dozen lines of code to over 200 as I
focussed in on exactly what I wanted. I still don't touch layers or layouts because my early
tinkerings with them resulted in disaster. I probably only use 5% of AB's potential but I'm happy
with what I can do for now. Perhaps AB is not always intuitive but it is powerful and does take time
to learn. Perhaps you don't want to be a programmer. In that case resign yourself to frustration or
move to another trading package. All the best. G
reinsley wrote:
> Hello,
>
> A weird thing drive me crazy.
>
> Take a simple two MA's crossover system.
>
> Two param periods such as Param("pds1",7,2,120,1);
>
> You play between param and optimize with alternate \\ to activate one
> then the other. Or even only with paramoptimize.
>
> Every time you press on the Display Indicator icon, colors of the plot
> are not updated, you lose confidence in update power of the display
> indicator button.
> Or you kill the pane, you reload.
> Or you use Insert Indicator (plot colors are not updated) and you
> believe that the whole formula is reloaded.
> That is true for the graphic.
>
> Change the default period value in the formula and the first pane
> parameters gives the old default values as expected, pds1 and pds2.
> The second pane parameters gives the new default values as expected.
>
> Open AA from the formula editor ( with Exclamation mark icone), the
> active formula is loaded and reloaded.
>
> Run BT and the arrows plot exotical points that are not following the
> trading rules.
> The AA trading list announce extra trades. You try to understand what
> exrem does. You give up.
>
> You are a newbie, the mistake commes from you, not from AB. You can't
> explain the issue and it's a so minor problem that nobody can be
> interrested in.
>
> The nightmare begin. For weeks... Bye bye trading, you are a
> programmer my son.
>
> The solution :
>
> In AA, click on Paremeter button and you see Old periods values with
> the slider. No ! You have reloaded the whole formula.
> You right click into the last pane. You see new periods values with
> the slider. Whaoo.
> Which one is active ?
> Both, one in AA, the other one in the graph.
>
> To really update AA you have to press the Pick Button and reload the
> formula into AA.
>
> It's the end of the nightmare. I would have appreciated that the
> simple apply indicator activation could update the AA formula or at
> least the Insert Indicator activation.
>
> I don't know yet if it's a bug or a feature, but probably many users
> believe to modify their formula and they are running the same
> parameters again and again.
>
> Let's comme back to trading.
>
> Regards
>
>
>
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> To get support from AmiBroker please send an e-mail directly to
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