[R] Plot to a device and examine the plot?

[Jeff Newmiller]

This question is not clear to me. What is it you hope to retrieve from the device?

Note that the type of device in your example is system-dependent. The content in a png() would be different than the content in a win.graph() device.

On October 15, 2023 8:04:00 AM PDT, Shu Fai Cheung <shufai.cheung using gmail.com> wrote:
>Hi All,
>
>I want to inspect the content of a plot generated by another function.
>
>For example:
>
>plot.new()
>polygon(c(.5, .5, .75, .8), c(.25, .3, .4, .5))
>
>A polygon will be drawn. If I do not know what has been done to generate
>the plot, is it possible to query the content in the active device?
>
>Regards,
>Shu Fai
>
>	[[alternative HTML version deleted]]
>
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-- 
Sent from my phone. Please excuse my brevity.