Indicator calculated on selceted bars only

[fxnew]

hi folks,

I tried to modify one of my iondicators so that a partial number of Bars (=partial timespan) is calculated and showed in the chart window Only,

i.e. for example that the Bars 50 to 100 should be used/calculated and shown by the indicator only.

I tried some ideas with the indicatorcounted() function but that doesn't seem to be the way.

If anybody has ideas, thanks very much in advance of course!

[William Roeder]

1. Standard indicator uses:
   

   for (int shift = Bars - 1 - IndicatorCounted(); shift >=0; shift--){ ...

2. Skip the first n-1 bars

   SetIndexDrawBegin(0,SmaLength);
   :
   for (int shift = MathMin(Bars - 1 - IndicatorCounted(), Bars - SmaLength); shift >=0; shift--){ ...

3. Draw the last n bars

   for (int shift = MathMin(Bars - 1 - IndicatorCounted(), Limit); shift >=0; shift--){ ...