| Re: Multiple plots on Object graphics [message #49006] |
Fri, 09 June 2006 12:50 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
David Fanning writes:
> I would do this with direct graphics objects.
Oh, wait, I just read the title of your post again. You wanted
this in object graphics. I don't know off-hand how to do that.
I'm sure it's easy, though. Instead of using !P.MULTI you
will have to set up your scene with multiple views and
keep track of those.
I'm sure it's even easier with iTools, but my head hurts
just to think about that! :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
|
|
|
|
| Re: Multiple plots on Object graphics [message #49007 is a reply to message #49006] |
Fri, 09 June 2006 12:38  |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
hyperjiver@yahoo.com writes:
> I am trying to draw multiple ROIs using XROI and everytime an ROI is
> drawn, I need to generate a plot. I modified the XROI.pro program to
> add a Draw widget.
>
> Everytime I draw a ROI, I want to plot in the draw widget. The next
> plot should also be in the same window and rescale itself according to
> the new values and show both the plots. Anytime I delete an ROI I want
> the respective plot to be deleted as well.
>
> Can anybody please help??
This is a good project for an intermediate IDL programming
course. In fact, I'll see if I can get some of the participants
in my upcoming UK courses to write this for us. :-)
I would do this with direct graphics objects. Create
a "plot" object, which is simple enough. It just draws
the plot with a particular color, linestyle, and symbol
when its DRAW method is called. Then create a "window"
object which is just a draw widget subclassed from
an IDL_Container object. The DRAW method of the window
object would have some notion of a "grid" of plots.
This is nothing more than a way to set up the number of
columns and rows required for X number of plots.
When the DRAW method of the window is called, it counts
how many plot objects have been added to it, calculates
its grid (I'm sure I have done this multiple times in
the past!), and then sets !P.MULTI appropriately and
calls the DRAW methods of all it's children. Viola!
Plots on the page!
When a plot is removed from the window container, the
window simply calls its DRAW method again, and everything
happens automatically. Gosh, you have *got* to love objects!!
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
