[DOCS] Adds runtime fields vs formula to Lens (#107419)

* [DOCS] Adds runtime fields vs formula to Lens

* Moved up in list

* Review comment

* Comments from Graham
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Kaarina Tungseth 2021-08-02 13:56:40 -05:00 committed by GitHub
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@ -275,6 +275,16 @@ which is helpful when you want to make a comparison to the whole documentation s
. Click *Advanced*, then select *Include documents without this field*.
====
[discrete]
[[when-do-i-use-runtime-fields-vs-formula]]
.*When do I use runtime fields vs. formula?*
[%collapsible]
====
Use runtime fields to format, concatenate, and extract document-level fields. Runtime fields work across all of {kib} and are best used for smaller computations without compromising performance.
Use formulas to compare multiple {es} aggregations that can be filtered or shifted in time. Formulas apply only to *Lens* panels and are computationally intensive.
====
[discrete]
[[is-it-possible-to-have-more-than-one-Y-axis-scale]]
.*Can I add more than one y-axis scale to a visualization?*
@ -384,11 +394,3 @@ Pagination in a data table is unsupported. To use pagination in data tables, cre
====
Specifying the color for a single data point, such as a single bar or line, is unsupported.
====
//[discrete]
//[[when-do-i-use-runtime-fields-vs-formula]]
//.*When do I use runtime fields vs. formula?*
//[%collapsible]
//====
//
//====