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sccn / eeglab

EEGLAB is an open source signal processing environment for electrophysiological signals running on Matlab and developed at the SCCN/UCSD
https://eeglab.ucsd.edu/
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Interpolating using 'spacetime' method #704

Closed droe11 closed 8 months ago

droe11 commented 11 months ago

Hi EEGLAB community,

I am trying to interpolate EEG data back so that I can perform multivariate machine learning algorithm on the channel data.

I have been able to successfully use the EEGOUT = eeg_interp function with the 'spherical' method.

However, whenever I try it using the 'spacetime' method I get this error:

Unrecognized function or variable 'griddata3'.

Error in eeg_interp (line 243) badchansdata = griddata3(ygood, xgood, zgood, tmpdata,...

I am unsure of what this means and how to correct it.

For the function I am currently using these specifications: EEGOUT = eeg_interp (EEG, chans, method, t_range;

The chans = 128 electrode file that I have loaded in, the method = either 'spherical' or 'spacetime' and the t_range = [EEG.xmin EEG.xmax].

I would appreciate any help on this issue.

MATLAB 2022a EEGLAB V2023.0

Thank you, Dominic

arnodelorme commented 8 months ago

Apologies for the late response. You might be the first one to use that option in a long time (griddata3 was discontinued in 2009). I have fixed the issue in b31d183c7 This option is very very slow.