StockFetcher Forums · General Discussion · Do you see what is wrong??<< >>Post Follow-up
dwiggains
417 posts
msg #154671
Ignore dwiggains
11/19/2020 10:59:22 AM

I cannot make this draw the bollinger bands right.
I can do one at a time but not both???

Fetcher[
close > 1
draw bollinger band (20)
draw bollinger band (10)
]



thanks
david

Cheese
1,017 posts
msg #154672
Ignore Cheese
11/19/2020 11:13:46 AM

david, I see two BB drawn.

nibor100
656 posts
msg #154673
Ignore nibor100
11/19/2020 1:59:24 PM

I'm getting two BBs but one of them is missing its upper band line.

Appears that the upper band line for the BB(20) is missing for some unknown reason.

Ed S.

nibor100
656 posts
msg #154674
Ignore nibor100
11/19/2020 2:03:20 PM

And to make it more confusing the upper band color for the BB(20) is being used for the upper band line for the BB(10), seems very odd.....

Ed S.

nibor100
656 posts
msg #154675
Ignore nibor100
11/19/2020 2:13:14 PM

If you use a different number of standard deviations in each one as the 2nd parameter, it looks like you can see all 4 lines.

make it
draw bollinger band (20,2)
draw bollinger band (10,1)

and you should get an idea of what would be drawn.

Ed S.

Cheese
1,017 posts
msg #154676
Ignore Cheese
11/19/2020 2:24:55 PM

Ed, you are right
But this works with 2 different periods, 2 different standard deviations
Strange
Fetcher[
SYMLIST(SPY,QQQ)

draw upper bollinger band(20,1)
draw lower bollinger band(20,1)

draw upper bollinger band(10,2)
draw lower bollinger band(10,2)
]



Cheese
1,017 posts
msg #154677
Ignore Cheese
11/19/2020 2:31:40 PM

This still works
Fetcher[
SYMLIST(SPY,QQQ)

set{C,CLOSE}

draw CUBB(C,20,2) on plot C

draw CUBB(C,10,2) on plot C
]



dwiggains
417 posts
msg #154679
Ignore dwiggains
11/19/2020 4:13:29 PM

Thanks for the help
Mine was crazy
Not drawn right at all

Cheese
1,017 posts
msg #154680
Ignore Cheese
11/19/2020 4:58:54 PM

david,
Have you tried closing your browser, clear the cache, sign back on to sF again?
It may work. Good luck.

StockFetcher Forums · General Discussion · Do you see what is wrong??<< >>Post Follow-up

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