Bollinger Bands as Lower Indicator

[tsferro]

does anyone know if it is possible to create bollinger bands as a "layered" lower indicator so that they express the value of an already existant lower indicator, using this lower indicator's value as input?

i am looking to quanitfy the volatility of the indicator, so suggestions of other means of doing so would also be much appreciated

cheers~

[ACM]

Re: Bollinger Bands as Lower Indicator

tsferro
It is possible to calculate Bollinger Bands using another study as the source.
If you run a search through these forums you can find scripts that will calculate Bollinger Bands of RSI and other studies that you could use as examples to create your own study on study
Alex

Originally posted by tsferro
does anyone know if it is possible to create bollinger bands as a "layered" lower indicator so that they express the value of an already existant lower indicator, using this lower indicator's value as input?

i am looking to quanitfy the volatility of the indicator, so suggestions of other means of doing so would also be much appreciated

cheers~

[tsferro]

thanks for your help Alexis. i'm trying to figure out how to plug my indicator in as input without any luck..this indicator is not a default eSignal indicator so I am unable to use the builder.

[ACM]

tsferro
If by "builder" you mean the Formula Wizard then you will not be able to use that tool for what you are trying to accomplish.
To do what you want you will need to code your own script using efs2 functions which can use a price series, another built-in study or a custom series as a source. You can find the complete list of the efs2 built-in study functions in the EFS KnowledgeBase in the Function Reference-> Built-in Study Functions folder
To create a custom series you need to perform your calculations in a separate function or external efs and then retrieve the results of those calculations using the efsInternal() or efsExternal() functions This series can then be used as a source for the built-in studies.
For the description of the efsInternal() and efsExternal() functions and the required syntax see the links above which will take you to the corresponding articles in the EFS KnowledgeBase.
You can also find several detailed examples on how to use efsInternal() and efsExternal() in this and this thread.
Also try searching the forum as there are many more examples of studies [including Bollinger Bands] based on custom variables as this topic has been discussed at length before
Alex

Originally posted by tsferro
thanks for your help Alexis. i'm trying to figure out how to plug my indicator in as input without any luck..this indicator is not a default eSignal indicator so I am unable to use the builder.