[R] Plotting directly to memory?

[Jan van der Laan]

Perhaps the ragg package? That has an `agg_capture` device "that lets 
you access the device buffer directly from your R session." 
https://github.com/r-lib/ragg

HTH,
Jan




On 28-05-2023 13:46, Duncan Murdoch wrote:
> Is there a way to open a graphics device that plots entirely to an array 
> or raster in memory?  I'd prefer it to use base graphics, but grid would 
> be fine if it makes a difference.
> 
> For an explicit example, I'd like to do the equivalent of this:
> 
>    filename <- tempfile(fileext = ".png")
>    png(filename)
>    plot(1:10, 1:10)
>    dev.off()
> 
>    library(png)
>    img <- readPNG(filename)
> 
>    unlink(filename)
> 
> 
> which puts the desired plot into the array `img`, but I'd like to do it 
> without needing the `png` package or the temporary file.
> 
> A possibly slightly simpler request would be to do this only for 
> plotting text, i.e. I'd like to rasterize some text into an array.
> 
> Duncan Murdoch
> 
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