[R] Loading an image/picture (png/jpeg/...) to screen...

[Greg Snow]

Once you have your image displayed in a plot, look at the updateusr function in the TeachingDemos package for a way to modify the coordinate system to what you want so that using locator() gives the results that you want.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of oliver
> Sent: Sunday, June 06, 2010 5:46 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] Loading an image/picture (png/jpeg/...) to screen...
> 
> Hello,
> 
> 
> how can I load an external picture/image file to screen?
> 
> I want to use locator() then to get coordinates of that picture...
> ...in other words I want to use R to do some measurements on a picture.
> 
> Therefore I need to load the image into R display,
> and that displaying needs to work together with locator().
> 
> 
> How to do it best?
> 
> At the moment I need to be able to read in *.png files,
> but if *.jpeg or other formats also will be supporttzed, this would be
> fine.
> 
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