Deleting first slice in a stack

[simon andrews (BI)]

I'm sure I must be doing this wrong, but I can't find a way to delete  
the first image in a stack.

If I have a stack of 5 images in an ImagePlus object and I call:

imp.getImageStack().deleteSlice(1);

Then the second slice is deleted.

If I call imp.getImageStack().deleteSlice(0);

Then I get an Illegal Argument exception.

How do I get rid of the first slice??

Simon.

[Rasband, Wayne (NIH/NIMH) [E]]

On Feb 18, 2010, at 8:41 AM, Simon Andrews wrote:

> I'm sure I must be doing this wrong, but I can't find a way to delete  
> the first image in a stack.
>
> If I have a stack of 5 images in an ImagePlus object and I call:
>
> imp.getImageStack().deleteSlice(1);
>
> Then the second slice is deleted.
>
> If I call imp.getImageStack().deleteSlice(0);
>
> Then I get an Illegal Argument exception.
>
> How do I get rid of the first slice??

This seems to work:

   ImagePlus imp = IJ.getImage();
   ImageStack stack = imp.getStack();
   stack.deleteSlice(1);
   imp.setStack(null, stack);

-wayne

[Arttu Miettinen]

Hello,

Related to this, how to add a slice to the first position in a stack? In
1.43q, Image-Stacks->Add slice adds one slice after the active one. Add
slice toolbar button does the same thing.

Of course one can duplicate the first slice but that requires many mouse
clicks; it would be nice to be able to insert new slice before the active
one.

- Arttu Miettinen

> On Feb 18, 2010, at 8:41 AM, Simon Andrews wrote:
>
>> I'm sure I must be doing this wrong, but I can't find a way to delete
>> the first image in a stack.
>>
>> If I have a stack of 5 images in an ImagePlus object and I call:
>>
>> imp.getImageStack().deleteSlice(1);
>>
>> Then the second slice is deleted.
>>
>> If I call imp.getImageStack().deleteSlice(0);
>>
>> Then I get an Illegal Argument exception.
>>
>> How do I get rid of the first slice??
>
> This seems to work:
>
>    ImagePlus imp = IJ.getImage();
>    ImageStack stack = imp.getStack();
>    stack.deleteSlice(1);
>    imp.setStack(null, stack);
>
> -wayne
>

[Rasband, Wayne (NIH/NIMH) [E]]

On Feb 19, 2010, at 4:06 AM, Arttu Miettinen wrote:

> Hello,
>
> Related to this, how to add a slice to the first position in a stack? In
> 1.43q, Image-Stacks->Add slice adds one slice after the active one. Add
> slice toolbar button does the same thing.
>
> Of course one can duplicate the first slice but that requires many mouse
> clicks; it would be nice to be able to insert new slice before the active
> one.

Hold down the alt key while selecting Image>Stacks>Add Slice to add a blank slice before the active one.

-wayne

>> On Feb 18, 2010, at 8:41 AM, Simon Andrews wrote:
>>
>>> I'm sure I must be doing this wrong, but I can't find a way to delete
>>> the first image in a stack.
>>>
>>> If I have a stack of 5 images in an ImagePlus object and I call:
>>>
>>> imp.getImageStack().deleteSlice(1);
>>>
>>> Then the second slice is deleted.
>>>
>>> If I call imp.getImageStack().deleteSlice(0);
>>>
>>> Then I get an Illegal Argument exception.
>>>
>>> How do I get rid of the first slice??
>>
>> This seems to work:
>>
>>   ImagePlus imp = IJ.getImage();
>>   ImageStack stack = imp.getStack();
>>   stack.deleteSlice(1);
>>   imp.setStack(null, stack);
>>
>> -wayne
>>

[Mike Cowperthwaite]

On 19-Feb-10 7:10 am, Rasband, Wayne (NIH/NIMH) [E] wrote:

> On Feb 19, 2010, at 4:06 AM, Arttu Miettinen wrote:
>
>> Hello,
>>
>> Related to this, how to add a slice to the first position in a stack? In
>> 1.43q, Image-Stacks->Add slice adds one slice after the active one. Add
>> slice toolbar button does the same thing.
>>
>> Of course one can duplicate the first slice but that requires many mouse
>> clicks; it would be nice to be able to insert new slice before the active
>> one.
>
> Hold down the alt key while selecting Image>Stacks>Add Slice to add a blank slice before the active one.
>
> -wayne

FYI: In Windows, it's not possible to hold down Alt while navigating a
menu.  Generally, modifier keys on menu clicks are nonstandard.

[jolyon]

I ran into this very problem with both macro and plugin scripts. The workaround that I found was to reverse the stack order:

run("Reverse");

Then delete the last slice, then reverse again. Works ok, though doesn't seem to work in macro's batch mode annoyingly, so is a little slow and displays the images as it goes.

Any more elegant solution would be welcome though!

[mhmh]

simon andrews (BI) wrote

If I have a stack of 5 images in an ImagePlus object and I call:

imp.getImageStack().deleteSlice(1);

Then the second slice is deleted.

I think

imp.getImageStack().deleteSlice(1);

deletes the first slice, even though you still see it with imp.show().

If you do

ImagePlus timp = new ImagePlus("test",imp.getStack());timp.show();

it's not there anymore.