1. Yes, I think so, although I wouldn't swear that everything is smart enough to read this flag. You might be safer converting them to surface ras and using them that way

2. Yes.

On Mon, 1 Jul 2013, Mehul Sampat wrote:

Thanks Bruce; Okay i assume, useRealRAS should be 1 for scanner RAS; 
Two questions: 
1. If my control points are in scanner RAS, then can I use them directly as
long as I set 
useRealRAS to 1 in the control.dat file ?
2. Can useRealRAS variable be only 0/1 or do you have a different value for
surface RAS?

Thanks
Mehul




On Mon, Jul 1, 2013 at 12:13 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu>
wrote:
      Hi Mehul

      they can either be in "real" (meaning scanner) RAS or in surface
      RAS

      cheers
      Bruce
      On Mon, 1 Jul 2013, Mehul Sampat wrote:

            Thanks Bruce; I noticed that in the control.dat file
            the second last line is
            "useRealRAS 0"
            just curious to know if info is used by recon-all or
            is only used by the
            viewer ? 
            Thanks
            Mehul


            On Mon, Jul 1, 2013 at 11:34 AM, Bruce Fischl
            <fis...@nmr.mgh.harvard.edu>
            wrote:
                  yes, they are stored in ras
                  On Mon, 1 Jul 2013, Mehul Sampat wrote:

                        Hi Folks, Once we make control points in
            tkmedit,
                        they are stored in the
                        file control.dat
                        Are these control points stored in RAS
            co-ordinate
                        system ?
                        If not what is the co-ordinate system
            used to store
                        the control points
                        Thanks
                        Mehul





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