If the scaling is wrong by a factor of 57.3 (180/pi), then I would
expect it to be due to a discrepancy between units of degrees and
units of radians.
Best regards,
-John
On 19 March 2012 15:10, Yune Lee <[log in to unmask]> wrote:
> Dear SPM users,
>
> I noticed a puzzling discrepancy on the scale of motion parameters after I
> manually created a motion parameter plot using the txt file that SPM
> generated after realignment.
>
> In the attached files, S1_rotation_run1.pdf shows three rotation profiles on
> the first run of a subject and spm_out.pdf is what SPM typically gives us
> after realignment is doe.
> As can be seen, the rotation range is -1 to -0.4 (see bottom plot of
> the SPM plot ) and -0.01 to 0.004 (manual plot). Does anybody have idea why
> the scale is different between those two?
>
> Thanks in advance,
> YSL
>
>
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