Merge pull request #925 from asprionj/intro_ex

New Introductory Example

Author: ChrisRackauckas

docs/src/basics/FAQ.md

@@ -21,20 +21,3 @@ lowered array? You can use the internal function `varmap_to_vars`. For example:
 ```julia
 pnew = varmap_to_vars([β=>3.0, c=>10.0, γ=>2.0],parameters(sys))
 ```
-
-## Embedding data into a symbolic model
-
-Let's say for example you want to embed data for the timeseries of some
-forcing equations into the right-hand side of and ODE, or data into a PDE. What
-you would do in these cases is use the `@register` function over an interpolator.
-For example, [DataInterpolations.jl](https://github.com/PumasAI/DataInterpolations.jl)
-is a good library for interpolating the data. Then you can do:
-
-```julia
-spline = CubicSpline(data,datat)
-f(t) = spline(t)
-@register f(t)
-```
-
-This will make `f(t)` be a function that Symbolics.jl will not attempt to trace.
-One should also consider defining the derivative to the function, if available.