[FieldTrip] Difficulty using "plotfiltresp" --- trying to plot frequency response curve on my data

[Schoffelen, J.M. (Jan Mathijs)]

Hi Jonathon,
There’s a typo in the cfg specification: cfg.poltfiltresp should read: cfg.plotfiltresp.

Best wishes,
JM


On 22 Apr 2020, at 20:12, Jonathon James Parker <parkerjo at stanford.edu<mailto:parkerjo at stanford.edu>> wrote:

Hi Fieldtrippers:

I am interested in looking at the Frequency response curve after applying different filter types to extract high-gamma band (70-170Hz) in my dataset.

I have used the cfg.plotfiltresp = ‘yes’ flag in running preprocessing on a subset of my data. The call to ft_preprocessing runs without issue, but there is no plot of the filter response curve.

Here is an example of the cfg I am using for the call to ft_preprocessing

 cfgi = [];
    cfgi.bpfilter = 'yes';
    cfgi.bpfreq = [l70 170];
    cfgi.bpfilttype = 'but';
    cfgi.bpinstabilityfix = 'reduce';
    cfgi.bpfiltrord = 8;
    cfgi.poltfiltresp = ‘yes’;



I searched the code of ft_preprocessing and only see the “plotfiltresp” referenced in handling the cfg. flag, thus I am guessing this parameter is simply passed to a lower level pre_proc function depending on the filter type.

Has anyone else had this problem and can offer advice on how to get this functionality to work?

I am running Fieldtrip August 2019 build.

Hope everyone is staying healthy.

Kindest regards and thank you,

Jonathon

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jonathon “JP" Parker MD, PhD
Resident in Neurosurgery | PGY5
Morgridge Endowed Postdoctoral Fellow
Maternal & Child Health Research Institute
Department of Neurosurgery
Stanford University
E: parkerjo at stanford.edu<mailto:parkerjo at stanford.edu>




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