Hi,
(a) use the PointRoi class.
(b, c) it seems that the easiest would be using the ROI Manager,
there you can store points together with the (hyper-)stack slice. In
interactive mode, just type "t" or CTRL-t to store them.
Selecting a line in the roi manager will automatically set the
correct slice.
When doing it from a plugin, you have quite a few public RoiManager
functions that you can use:
get the RoiManager:
public static RoiManager getInstance()
if null, create a new RoiManager;
if non-null, use getCount to get the length of its current contents,
so you know where you start.
adding:
public void add(ImagePlus imp, Roi roi, int n)
analyzing/restoring:
public int getCount()
public static String getName(String index)
public int getSliceNumber(String label)
public void select(int index)
Hope this helps,
Michael
________________________________________________________________
On 28 Apr 2009, at 20:39, cihat eldeniz wrote:
> Hello,
>
> If one would like to make point selections from a multi-slice
> image, with
> the possibility that the slices can be associated with different
> roi's, how
> does one
>
> a) select the points on each slice? [If I am not mistaken, every
> ImagePlus
> object seems to have a single roi associated with it no matter what
> the
> number of slices is, and it is accessed through the function getRoi
> ().]
>
> b) access these points? [The getRoi functions of the classes
> ImageStack and
> ImageProcessor return a Rectangle. I believe I can use the function
> getMaskArray of the processor to find the points. Is that right?
> But the
> multi-slice case still remains unsolved.]
>
> c) access these points if they were picked on not a stack, but a
> single-channel hyperstack with 14 z values and 50 t values?
>
> Thanks very much...
Locked
