Rescaling and overlaying the shapes on scatter plot

Message-ID:<3cfb912c-d7bc-4b11-a6f8-1f871ed9ecdb@k19g2000yqn.googlegroups.com>
Subject:

Rescaling and overlaying the shapes on scatter plot

Date:Tue, 4 Aug 2009 23:23:57 +0100


Hi,
I am currently trying to plot shapes (closed polygons) on scatter
plot. The shapes are basically boundary points of different objects
retrieved from the image so each shape has data points with scale of
corresponding image. The scatter plot has completely different scale
(e.g  X= -3 to 1.5 Y=-2 to 6) while shapes are from images (e.g 346 x
346). Each shape has corresponding dot on the scatter plot, what i
want to do is to plot the shapes on the corresponding scatter point
keeping the scale of the orginal scatter plot ,ofcourse somehow
rescaling the data points of the shapes i believe.
Please help me i am really stuck and need someone to help me.

best regards,

Message-ID:<qdiem.37737$Db2.20429@edtnps83>
Subject:

Re: Rescaling and overlaying the shapes on scatter plot

Date:Wed, 5 Aug 2009 17:14:14 +0100

frondeur wrote:
> Hi,
> I am currently trying to plot shapes (closed polygons) on scatter
> plot. The shapes are basically boundary points of different objects
> retrieved from the image so each shape has data points with scale of
> corresponding image. The scatter plot has completely different scale
> (e.g  X= -3 to 1.5 Y=-2 to 6) while shapes are from images (e.g 346 x
> 346). Each shape has corresponding dot on the scatter plot, what i
> want to do is to plot the shapes on the corresponding scatter point
> keeping the scale of the orginal scatter plot ,ofcourse somehow
> rescaling the data points of the shapes i believe.
> Please help me i am really stuck and need someone to help me.

Don't understand your problem.  If you start
with an object retrieved from the image then
that object will have a set of pixel values
associated with it.  The coordinates of the
object in the image-space are quite separate
from the pixel values the object contains
(in feature-space).  It is only the latter
which can be plotted on a scatter plot.  The
two are never plotted together in the same
space.

Clearly, I have misunderstood something.
What?

-- 
Regards,
Martin Leese
E-mail: please@see.Web.for.e-mail.INVALID
Web: http://members.tripod.com/martin_leese/

Message-ID:<dd2960af-bd8b-4c6e-8fb1-e4d51e5087a4@q35g2000vbi.googlegroups.com>
Subject:

Re: Rescaling and overlaying the shapes on scatter plot

Date:Thu, 6 Aug 2009 00:52:17 +0100


On Aug 5, 12:14=A0pm, Martin Leese <ple...@see.Web.for.e-mail.INVALID>
wrote:
> frondeur wrote:
> > Hi,
> > I am currently trying to plot shapes (closed polygons) on scatter
> > plot. The shapes are basically boundary points of different objects
> > retrieved from the image so each shape has data points with scale of
> > corresponding image. The scatter plot has completely different scale
> > (e.g =A0X=3D -3 to 1.5 Y=3D-2 to 6) while shapes are from images (e.g 3=
46 x
> > 346). Each shape has corresponding dot on the scatter plot, what i
> > want to do is to plot the shapes on the corresponding scatter point
> > keeping the scale of the orginal scatter plot ,ofcourse somehow
> > rescaling the data points of the shapes i believe.
> > Please help me i am really stuck and need someone to help me.
>
--------------------------------------------
Martin's right.  I've read this 5 times and it's still confusing,
probably more confusing because of imprecise/sloppy terminology.  Try
to explain better, and post an image somewhere showing what you're
starting with and what you'd like to end up with (mock up something in
Photoshop if you have to).