[R] Generate and store multiple plots

[David Winsemius]

On Jun 10, 2012, at 9:47 PM, analyst41 at hotmail.com wrote:

> I have a data set whose rows look like
>
> Item date variable_1 variable_2 variable_3 variable_4
>
>
> Different items may occur over different dates.
>
> During any single study, I might select a subset of the four variables
> or some function of them to be plotted against time (date).
>
> For each item, I would select a date range and I want a plot of the
> selected variables over that range for that item.
>
> I need a method that would do this at one shot and put the plot
> objects out to disk, one for each item.

What efforts at construction of test cases can you show us?

-- 

David Winsemius, MD
West Hartford, CT