Renata Ghisloti Duarte de Souza gives an example of running a non-linear regression in R:

Now, suppose you were able to find a good function to model your data. With that, we are able to predict future values for our small dataset.

One important thing about

the predict() function in R is that it expects a similar dataframe with the same column name and type as the one you used in your model.

Click through for several examples.