Jan 19, 2012 · According to their documentation for Matlab filter () and SciPy lfilter (), it seems like they should be "compatible". However I have a problem, porting larger Matlab code in Python, for which I get ValueError: object of too small depth for desired array.

Sep 16, 2015 · The closest equivalent in MATLAB is to use logical indexing to filter out elements you don't need: l = [1,2,3,4]; l2 = l(l > 2); What filter in Python does is that it returns another list given that the predicate you specify for each element in your list evaluates to True .

Running MATLAB R2012b, Spyder 2.2.0 with Python 2.7, SciPy 0.12.0 on Windows 7 x64. In MATLAB: [b,a] = butter(5, [0.75*2/30, 5.0*2/30], 'bandpass'); y = filtfilt(b, a, input_signal)

Sep 23, 2022 · Still, there is a filter that I've tried hard to achieve the same result: fdesign.highpass and design in MatLab: hp = fdesign.highpass('N, Fc',order, FC, Fs); Hd = design(hp,'butter'); Data(n,:)=filtfilt(Hd.sosMatrix,Hd.ScaleValues,Data(n,:));

Oct 7, 2021 · I want to reproduce the result given by filter() MATLAB function using scipy.signal functions. The result is not consistent: Matlab example: bb = 0:.1:9.; aa = 1; xx = repmat(0.9234e-18, 100, 1);...

Jan 14, 2023 · 你需要使用 scipy.signal.lfilter (b,a,x) 来实现 Matlab 中的 filter (b,a,x)，其中 b,a 和 x 分别对应 Matlab 中的 b, a 和 x. scipy.signal.correlate 是用来计算两个序列的卷积的函数，它与 Matlab 中的 filter2/conv2 函数不同。 在你的代码中， a = 1，所以你应该使用 scipy.signal.lfilter (b,1,x) 代替 filter (b,a,x). 本回答被题主选为最佳回答 , 对您是否有帮助呢? 本回答被专家选为最佳回答 , 对您是否有帮助呢? 本回答被题主和专家选为最佳回答 , 对您是否有帮助呢?

Mar 9, 2022 · The matlab filter is wheelFilt=designfilt('lowpassiir','FilterOrder',15,'PassbandFrequency',1000,'PassbandRipple',0.0001,'SampleRate',2000); Filtered(:,q)=filtfilt(wheelFilt,TrainPassData(:,q)); TrainPassData is a nxn matrix and was an iterating variable.

Oct 5, 2015 · I'm implementing an equivalent of Matlab's ordfilt2 function in Python. My current implementation is about 10-11 times slower than the Matlab implementation and I was wondering if anybody had an idea on where possible speedups might …

Mar 3, 2014 · I needed to replicate the exact same results for a Gaussian filter from Matlab in Python and came up with the following: Matlab: A = imfilter(A, fspecial('gaussian',12,3)); Python: A = scipy.ndimage.correlate(A, matlab_style_gauss2D((12,12),3), mode='constant', origin=-1)

Nov 23, 2010 · Moving average (MA) filter is a simple Low Pass FIR filter commonly used for smoothing an array of sampled data. Understand & simulate in Python/Matlab.