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07/03/2021 at 2:13 PM #173047 quote

dave_moz
Participant

Junior

Could anyone tell me if there is a way to show or hide an indicator based on conditions relating specifically to the current candle only?

e.g.
If low<EMAx and close>EMAx then display EMAx.

I did try a custom EMA indicator but the the EMA only displayed on each candle in the past which met the criteria rather than just plotting the EMA on the chart.

Thanks.

07/03/2021 at 2:37 PM #173048 quote
robertogozzi
Moderator

Legend
Try this one (not tested):
```
MyEma = average[20,1](close)
t    = 0   //transparency = invisible
If low < MyEma and close > MyEma then
   t = 255
Endif
Return MyEma coloured(0,255,0,t) as “MyEma”
```
it takes advantage of the optional 4th COLOUR parameter, transparency (0-255), to make ema visible only when conditions are met.
07/03/2021 at 2:57 PM #173049 quote

GraHal
Participant

Master

Impressive Wizardry! 🙂

Link to above added as Log 293 here …

Snippet Link Library

robertogozzi thanked this post

07/03/2021 at 3:02 PM #173051 quote

dave_moz
Participant

Junior

Hi,

Unfortunately this is still only displaying the MA on candles which meet the criteria.

07/03/2021 at 3:07 PM #173054 quote

robertogozzi
Moderator

Legend

Isn’t that what you meant with “If low<EMAx and close>EMAx then display EMAx”?

07/03/2021 at 3:15 PM #173055 quote

dave_moz
Participant

Junior

Sorry, I didn’t make it clear.

I want to be able to display MA[x] on the whole chart but only if the last day’s candle meets the requirements.

So if today meets the conditions then MA[x] is displayed on the whole chart.

Hope that makes sense!

07/03/2021 at 5:17 PM #173065 quote

robertogozzi
Moderator

Legend

There’s no instruction to achieve that, so it must be coded.

I’ll make it asap.

07/03/2021 at 5:36 PM #173066 quote

dave_moz
Participant

Junior

Great, thanks.

07/04/2021 at 9:39 AM #173077 quote
robertogozzi
Moderator

Legend
Bob’s your uncle:
```
DEFPARAM DrawOnLastBarOnly = True
Periods  = 20      //Ema periods
LookBack = 200     //plot Ema on the last 200 bars
MyEma = average[Periods,1](close)
If low < MyEma and close > MyEma then
   FOR i = (LookBack - 1) DownTo 0
      j = i + 1
      DrawSegment(BarIndex[j],MyEma[j],BarIndex[i],MyEma[i]) coloured(0,255,0,255) style(Line,3)
   NEXT
Endif
Return
```
Line 2 are the Ema periods and Line 3 are the number of bars you want the Ema to be plotted when conditions are met.

dave_moz thanked this post
07/04/2021 at 10:29 AM #173085 quote

dave_moz
Participant

Junior

That’s amazing, thank you!
Works like a charm.

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