code no longer working
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hi all my code was working last night fully but no longer working when trying to get it to run today i ahve changed nothing today and the error is due to the filtfilt function.
i have checked multiple times but it is not working
any ideas
below is the bit of code casuing the issue and the error
Error in group_04 (line 197)
Sjforce_filtered=filtfilt(b,a,SjForce);
%usign butterworth to filta the data
%selecting the cut of frequency
%cut of frequency will be the smame for both
Force_cutfreq=7;
%setting the code for both standard and squat jump
[b,a]=butter(2,Force_cutfreq/(Freq1/2),'low');
%for the standard jump jump
Sjforce_filtered=filtfilt(b,a,SjForce);
%for the squat jump
Sqforce_filtered=filtfilt(b,a,SqForce);
4 个评论
Torsten
2024-2-28
编辑:Torsten
2024-2-28
If you can use "filtfilt" in the other code, it can't be a licence problem.
Then check your inputs b, a and SjForce if they fulfill the documented requirements:
b, a — Transfer function coefficients
vectors
Transfer function coefficients, specified as vectors. If you use an all-pole filter, enter 1 for b. If you use an all-zero (FIR) filter, enter 1 for a.
Example: b = [1 3 3 1]/6 and a = [3 0 1 0]/3 specify a third-order Butterworth filter with a normalized 3-dB frequency of 0.5π rad/sample.
Data Types: single | double
x — Input signal
vector | matrix | N-D array
Input signal, specified as a real-valued or complex-valued vector, matrix, or N-D array. x must be finite-valued. The length of x must be greater than three times the filter order, defined as max(length(B)-1, length(A)-1). The function operates along the first array dimension of x unless x is a row vector. If x is a row vector, then the function operates along the second dimension.
Example: cos(pi/4*(0:159))+randn(1,160) is a single-channel row-vector signal.
Example: cos(pi./[4;2]*(0:159))'+randn(160,2) is a two-channel signal.
Data Types: single | double
Complex Number Support: Yes
Image Analyst
2024-2-28
% Check that user has the specified Toolbox installed and licensed.
%hasLicenseForToolbox = license('test', 'image_toolbox'); % Check for Image Processing Toolbox.
% hasLicenseForToolbox = license('test', 'Image_Acquisition_Toolbox'); % Check for Image Acquisition Toolbox.
% hasLicenseForToolbox = license('test', 'Statistics_Toolbox'); % Check for Statistics and Machine Learning Toolbox.
hasLicenseForToolbox = license('test', 'Signal_Toolbox'); % Check for Signal Processing Toolbox.
% hasLicenseForToolbox = license('test', 'Video_and_Image_Blockset'); % Check for Computer Vision System Toolbox.
% hasLicenseForToolbox = license('test', 'Neural_Network_Toolbox'); % Check for Deep Learning Toolbox.
if ~hasLicenseForToolbox
% User does not have the toolbox installed, or if it is, there is no available license for it.
% For example, there is a pool of 10 licenses and all 10 have been checked out by other people already.
ver % List what toolboxes the user has licenses available for.
message = sprintf('Sorry, but you do not seem to have the Signal Processing Toolbox.\nDo you want to try to continue anyway?');
reply = questdlg(message, 'Toolbox missing', 'Yes', 'No', 'Yes');
if strcmpi(reply, 'No')
% User said No, so exit.
return;
end
else
fprintf('You do have a license for that toolbox, even though it may be installed.\n')
end
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