[Insight-users] Reporting bugs

[Sayan Pathak]

Paul,
The way we post the bugs is to send it to the bug czar and let the czar =
can route it to the right spot. I happen to be playing the role of the =
czar for the moment. So, send it over to me.
Thanks,
Sayan

> -----Original Message-----
> From: Paul Yushkevich [mailto:pauly@cognitica.com]
> Sent: Friday, November 08, 2002 1:19 PM
> To: insight-users@public.kitware.com
> Subject: [Insight-users] A bug (?) in ImageSliceConstIteratorWithIndex
> class
>=20
>=20
> Hi everyone,
>=20
> I found what I think may be a bug in ImageSliceConstIteratorWithIndex=20
> class. =20
>=20
> The following code is intended to copy the contents of a=20
> slice 'slice'=20
> to the 2D array 'sliceArray'.
>=20
> SomeClass::SomeClass(...) {
>     // Create a slice iterator and choose a slice
>     slicer =3D=20
> ImageSliceConstIteratorWithIndex<ImageType>(imagePtr,imagePtr-
> >getLargestPossibleRegion());
>     slicer.setFirstDimension(0);
>     slicer.setFirstDimension(1);
> }
>=20
> void SomeClass::setSlice(int slice) {
>=20
>     // Skip to the right slice
>     slicer.GoToBegin();
>     for(int i=3D0;i<slice;i++) {
>         slicer.NextSlice();
>     }
>=20
>     // BUG-SOLVING-LINE: slicer.SetIndex(slicer.GetIndex());
>=20
>     // Fill out the 2D image
>     int sliceIdx =3D 0;
>     while ( !slicer.IsAtEndOfSlice() ) {
>         while ( !slicer.IsAtEndOfLine() ) {
>             sliceArray[sliceIdx++] =3D (unsigned char) floor(255 *=20
> slicer.Value());
>             ++slicer;
>         } =20
>         slicer.NextLine();
>     }
> }
>=20
> No matter which slice number I pass on to this piece of code,=20
> it places=20
> the first slice of the 3D image into the 2D array.
>=20
> However, if I uncomment the line labeled BUG-SOLVING-LINE,=20
> things start=20
> working again.  Seems like the iterator is keeping a pair
> of internal references to the currently selected pixel, and they are=20
> getting out of sync.
>=20
> BTW, can someone tell me how to get a userid and password for=20
> posting a=20
> bug using the online system?
>=20
> Thanks!
>=20
> Paul Yushkevich
> Cognitica Corporation
> pauly@cognitica.com
>=20
>=20
>=20
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>=20
>=20