[Homer-users] What happens to d and dod during processing?

[Adam Stone]

Now I see that after looking at the code for both. Thanks, Rob!

On Fri, Aug 5, 2016 at 5:09 PM, Cooper, Robert <robert.cooper at ucl.ac.uk>
wrote:

> Hey Adam,
>
> Homer2 stores all the outputs of process stream functions in the
> procResult structure.  So your first function (I think) will produce an
> output called procResult.d, which then will automatically become the input
> of hmrIntensity2OD.  procResult variables are then overwritten by
> successive operations.
>
> Note that as far as I know, running hmrIntensityNormalized before
> hmrIntensity2OD is superfluous- you only need run int2OD.
>
> Best,
>
> Rob Cooper
>
> On 5 Aug 2016, at 21:53, Adam Stone <adam.stone at gallaudet.edu> wrote:
>
> Hi,
>
> I just want to check my logic when building my processing stream and
> better understand where my data is being saved at each step.
>
> For example, if I was to run these two steps in order:
> 1. hmrIntensityNormalized
> 2. hmrIntensity2OD
> Both have the same input and output variables. Input is d (raw intensity
> data) and output is dod.
>
> So it sounds like both #1 and #2 are using the same input (d), which means
> #2 effectively ignores #1's output and just takes the raw intensity data
> (d) again for conversion to OD. What I want to do is normalize it first and
> then convert the normalized data to OD. (If that makese sense)
>
> Or is Homer2 smart enough to know that #2 should use the output from #1,
> and not just take the raw intensity data (d)?
>
> Thanks,
> Adam
>
> --
> Adam Stone
> PhD Candidate, Educational Neuroscience
> Petitto Brain & Language Laboratory for Neuroimaging (BL2)
> Gallaudet University | http://petitto.gallaudet.edu
>
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-- 
Adam Stone
PhD Candidate, Educational Neuroscience
Petitto Brain & Language Laboratory for Neuroimaging (BL2)
Gallaudet University | http://petitto.gallaudet.edu
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