Home »
Public Forums »
archive »
Re: Way to Edit Coordinates Graphically?
| Re: Way to Edit Coordinates Graphically? [message #84584] |
Tue, 04 June 2013 05:23 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Cherrie Kong writes:
> I've selected a series of coordinates (x,y) by clicking around an ROI using the CURSOR and WHILE (!MOUSE.button NE 4)... (as per example in CURSOR documentation). Is there a way to use these coordinates again (e.g. in the next section of a 3D stack) in a way that allows me to modify (e.g. by click and drag) the existing coordinates to better fit the object/ROI (which changes ever so slightly in z)?
You are not going to be able to edit ROI coordinates if you want to
continue to use the CURSOR command like this. But, if you wanted to use
a draw widget (the normal way to do these kinds of user interactions
with the cursor), the world opens up to you. If fact, these kinds of
editable ROI widgets have already been built for you in the
SelectInteraction object in the Catalyst Library.
Simply download the Catalyst and Coyote Libraries and run the Catalyst
example program:
IDL> catalyst
The Medical Image tab will be the first thing you see. Any of the ROI
tools on the right of the draw widget are editable ROIs. You see each
vertex of the ROI has a tiny selection button. Simply grab it and move
it.
The EventHandler method of the Catalyst object shows you how easy it is
to use these editable ROIs.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")
|
|
|
|
Current Time: Wed Oct 08 18:36:27 PDT 2025
Total time taken to generate the page: 0.00425 seconds
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
