If you want to identify the coordinates of points within a region, you
might want to look at the ImageJ application.
http://rsbweb.nih.gov/ij/
IIRC it has some macros to find and classify spots.
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> Subject: Re: [R] retrieve x y coordinates of points in current plot
>
> On 03/05/2011 07:25 PM, Greg Snow wrote:
> > It is not completely clear what you are trying to accomplish. Do you
> want to draw a shape in the plot then identify all the points in that
>
On 03/05/2011 07:25 PM, Greg Snow wrote:
It is not completely clear what you are trying to accomplish. Do you want to
draw a shape in the plot then identify all the points in that shape? You could
use locator (with type='l') to draw a polygon, then there are functions in add
on packages (mos
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> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
> project.org] On Behalf Of Jannis
> Sent: Saturday, March 05, 2011 7:29 AM
> To: Dieter Menne
> Cc: r-help@r-project.org
> Subject: Re: [R] ret
Thanks for your replies, Dieter and Richard. I am aware of these two
functions. I wanted, however, to write a similar function to identify by
selecting large clouds of points. For this I would need to rertrieve
their coordinates after the plot was called and created. As identify()
is able to do
jannis-2 wrote:
>
>
> is it somehow possible to retrieve the x and y coordinates of points in
> a scatterplot after it has been plotted? identify() somehow seems to
> manage this, so I was wondering whether it is possible?
>
locator might be the more basic function you are looking for.
Diet
Dear list,
is it somehow possible to retrieve the x and y coordinates of points in
a scatterplot after it has been plotted? identify() somehow seems to
manage this, so I was wondering whether it is possible?
I am asking as I wrote a function that identifies points inside a
polygon and I woul
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