Thread Subject: Curved axes, underlay graphics

Hi Y'All,

I wonder if we could underlay/under impose pictures/graphics
in a matlab figure.

If that could be done for straight axes, how about curved
axes? For example, I want to plot longitude and latitude
data points on a fisheye picture

(please check http://wiki.panotools.org/Fisheye_Projection ).

So basically somehow we can ask, could we have curved axes
in and underlay graphics in those plots?

Smile,

Ci

In article <g4hs9u$hm0$1@fred.mathworks.com>, Ci Xang <c.xmg@gmx.com> wrote:

>I wonder if we could underlay/under impose pictures/graphics
>in a matlab figure.

Yes. Create the new image and then adjust the order of the
Children property of the axes so that the image that is to
be "underneath" occurs -earlier- in the Children list.

>If that could be done for straight axes, how about curved
>axes?

No, Matlab makes no provision for curved axes. Even polar plots
are not done with curved axes (they are done with three sets of
rectangular axes.)

>For example, I want to plot longitude and latitude
>data points on a fisheye picture

You will have to calculate the effort of the distortion upon the
view of what is under the lens and output that, and when the
user moves the lens, you will have to repaint the parts that the
lens is no longer over and calculate and paint the distorted view
of what the lens is now over. Matlab will not do these things for you.
--
  "Style is instinctive and few achieve it in a notable degree. Its
   development is not hastened by instruction. It comes or it doesn't.
   It will take care of itself." -- Walter J. Phillips

"Ci Xang" <c.xmg@gmx.com> wrote in message <g4hs9u$hm0
$1@fred.mathworks.com>...
> Hi Y'All,
>
> I wonder if we could underlay/under impose
pictures/graphics
> in a matlab figure.
>
> If that could be done for straight axes, how about curved
> axes? For example, I want to plot longitude and latitude
> data points on a fisheye picture
>
> (please check
http://wiki.panotools.org/Fisheye_Projection ).
>
> So basically somehow we can ask, could we have curved axes
> in and underlay graphics in those plots?
>
> Smile,
>
> Ci
>
>

Do you have access to the mapping toolbox? I believe there
may be some interesting functions for visualization in
there.

Ken

Has anyone tried the mapping toolbox for this problem?