[R] Interactive maps

Antonio Serrano aasdelat at aim.com
Sat Apr 25 08:19:17 CEST 2015

Thank you, Jim.

I didn't know the existence of the locator() function. But I can see now that I don't know how to read a graphic image into R to work with it.
How can I read a pre-exisiting image into R?.

Thanks again



Antonio Serrano
aasdelat en aim.com



-----Original Message-----
From: Jim Lemon <drjimlemon en gmail.com>
To: Antonio Serrano <aasdelat en aim.com>
Cc: r-help mailing list <r-help en r-project.org>
Sent: Sat, Apr 25, 2015 5:47 am
Subject: Re: [R] Interactive maps

Hi Antonio,
If you do create the map in R, you can use


On Sat, Apr 25, 2015 at 8:37 AM, Antonio Serrano via
<r-help en r-project.org> wrote:
>  Hello, all:
>    I am new here,
and have a challenge to present some graphical data to the user in a convenient
>    The challenge is to present a map to the user which is coloured
with the value of a variable. Say for example, temperature. This is a
preexisting graph that I can generate in any format, including svg. I don't have
to produce it using R.
>    When the user clicks anywhere in the map, the
coordinates (longitude and latitude) have to be passed to R so that this, R, can
look for the values of other variables in that location and make another graph
with them.
>    Does anyubody know how could I accomplish this?.
Thanks in advance.
> Antonio Serrano
> aasdelat en aim.com
> ن
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