Re: [R] Best way of figuring out whether graphical elements overlap?

[Johannes Graumann]

Thank very much for this very cool help!

Joh

Greg Snow wrote:

 There is also the spread.labs function in the TeachingDemos package that
 uses a different method from the plotrix function and should not move any
 labels that are not overlapping.  There are also the dynIdentify and
 TkIdentify functions in the same package that allow you to interactively
 move labels around to where you are happy with their positions, then
 returns the coordinates to use for the positions in a final version of the
 plot.
 
 If you want to check by hand, you can use the strheight and strwidth
 functions to find the bounding rectangles and see if they overlap (there
 can be some cases where the actual text does not overlap even if the
 rectangles do).
 
 Hope this helps,
 
 --
 Gregory (Greg) L. Snow Ph.D.
 Statistical Data Center
 Intermountain Healthcare
 [EMAIL PROTECTED]
 801.408.8111
 
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
 project.org] On Behalf Of Johannes Graumann
 Sent: Tuesday, October 28, 2008 8:42 AM
 To: [EMAIL PROTECTED]
 Subject: [R] Best way of figuring out whether graphical elements
 overlap?

 Hi all,

 I'm plotting impulses, where some of them should have labels hovering
 above them. I know of plotrix' spread.labels function, but would like
 to save that for instances where there truely is to little space for
 the label.
 Does anybody have any hints what' the most efficient way might be to
 achieve the following:
 - plot an impulse plot
 - before placing each of a vector of text labels, check (using
 strhight/width), whether this collides graphically with anything
 already plotted and only plot it if not.

 Thanks for any hints, Joh

 __
 R-help@r-project.org mailing list
 https://stat.ethz.ch/mailman/listinfo/r-help
 PLEASE do read the posting guide http://www.R-project.org/posting-
 guide.html
 and provide commented, minimal, self-contained, reproducible code.
 
 __
 R-help@r-project.org mailing list
 https://stat.ethz.ch/mailman/listinfo/r-help
 PLEASE do read the posting guide
 http://www.R-project.org/posting-guide.html and provide commented,
 minimal, self-contained, reproducible code.

__
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Re: [R] Best way of figuring out whether graphical elements overlap?

[Greg Snow]

There is also the spread.labs function in the TeachingDemos package that uses a 
different method from the plotrix function and should not move any labels that 
are not overlapping.  There are also the dynIdentify and TkIdentify functions 
in the same package that allow you to interactively move labels around to where 
you are happy with their positions, then returns the coordinates to use for the 
positions in a final version of the plot.

If you want to check by hand, you can use the strheight and strwidth functions 
to find the bounding rectangles and see if they overlap (there can be some 
cases where the actual text does not overlap even if the rectangles do).

Hope this helps,

--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
[EMAIL PROTECTED]
801.408.8111


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
 project.org] On Behalf Of Johannes Graumann
 Sent: Tuesday, October 28, 2008 8:42 AM
 To: [EMAIL PROTECTED]
 Subject: [R] Best way of figuring out whether graphical elements
 overlap?

 Hi all,

 I'm plotting impulses, where some of them should have labels hovering
 above them. I know of plotrix' spread.labels function, but would like
 to save that for instances where there truely is to little space for
 the label.
 Does anybody have any hints what' the most efficient way might be to
 achieve the following:
 - plot an impulse plot
 - before placing each of a vector of text labels, check (using
 strhight/width), whether this collides graphically with anything
 already plotted and only plot it if not.

 Thanks for any hints, Joh

 __
 R-help@r-project.org mailing list
 https://stat.ethz.ch/mailman/listinfo/r-help
 PLEASE do read the posting guide http://www.R-project.org/posting-
 guide.html
 and provide commented, minimal, self-contained, reproducible code.

__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.