About recall rsp_analyze function

[Hannahhanhan555]

About recall rsp_analyze function

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[DominiqueMakowski]

Sorry, I'm not sure I understood your question

[Hannahhanhan555]

Sorry, I'm not sure I understood your question

I mean that for the same input resp signal, sig_0, under 2 Conditions, has different number of feature.

Condition 1:
when I call nk.rsp_analyze() firstly, it can extract 28 features.

Condition 2:
When I first call nk.rsp_analyze() using a longer signal sig_1, 37 features can be extracted.
that is OK, because some of features need a longer input signal.
My question is,
after calling nk.rsp_analyze() using sig_1, calling nk.rsp_analyze() using sig_0(using in Condition 1),
37 features are extracted, but in Condition1, only 28 features are extracted.
9 extra features are the same to those features extracted from sig_1.

[DominiqueMakowski]

My question is, after calling nk.rsp_analyze() using sig_1, calling nk.rsp_analyze() using sig_0(using in Condition 1), 37 features are extracted, but in Condition1, only 28 features are extracted. 9 extra features are the same to those features extracted from sig_1

I'm really sorry but I still have trouble to understand what your question is

[Hannahhanhan555]

My question is, after calling nk.rsp_analyze() using sig_1, calling nk.rsp_analyze() using sig_0(using in Condition 1), 37 features are extracted, but in Condition1, only 28 features are extracted. 9 extra features are the same to those features extracted from sig_1

I'm really sorry but I still have trouble to understand what your question is

Now, let's try another way.
Could you please try this code in one terminal and let me know your result?

input signal:
sig_0: resp signal, length is 7104, sampling rate is 64Hz
sig_1: resp signal, length is 11520, sampling rate is 64Hz

code:
sig_0_processed, info = nk.rsp_process(sig_0, 64)
feature_0 = nk.rsp_analyze(sig_0_processed, 64)
print(feature_0)

this is my result.

sig_1_processed, info = nk.rsp_process(sig_1, 64)
feature_1 = nk.rsp_analyze(sig_1_processed, 64)
print(feature_1)

this is my result.

feature_0_new = nk.rsp_analyze(sig_0_processed, 64)
print(feature_0_new)

this is my result.

Just compare feature_0 with features_0_new.
You will find this results are different.
If your results are not like this, please let me know, thank you!

[DominiqueMakowski]

I can't run this because I don't have the same data as you, and depending on the breathing rate it will detect a different number of cycles which can influence what is then computed.

If your question is whether it is normal to have a different number of features, as you mentioned it is likely to be related to the length of the signal. If you try with same length signals you should obtain the same amount of features.

In any case, I wouldn't worry too much and just use the "common" features if you want to compare the various signals